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Cheng XF, Qian WH, Wang J, Yu C, He JH, Li H, Xu QF, Chen DY, Li NJ, Lu JM. Environmentally Robust Memristor Enabled by Lead-Free Double Perovskite for High-Performance Information Storage. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1905731. [PMID: 31668013 DOI: 10.1002/smll.201905731] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 10/17/2019] [Indexed: 06/10/2023]
Abstract
Memristors are emerging as a rising star of new computing and information storage techniques. However, the practical applications are severely challenged by their instability toward harsh conditions, including high moisture, high temperatures, fire, ionizing irradiation, and mechanical bending. In this work, for the first time, lead-free double perovskite Cs2 AgBiBr6 is utilized for environmentally robust memristors, enabling highly efficient information storage. The memory performance of the typical indium-tin-oxide/Cs2 AgBiBr6 /Au sandwich-like memristors is retained after 1000 switching cycles, 105 s of reading, and 104 times of mechanical bending, comparable to other halide perovskite memristors. Most importantly, the memristive behavior remains robust in harsh environments, including humidity up to 80%, temperatures as high as 453 K, an alcohol burner flame for 10 s, and 60 Co γ-ray irradiation for a dosage of 5 × 105 rad (SI), which is not achieved by any other memristors and commercial flash memory techniques. The realization of an environmentally robust memristor from Cs2 AgBiBr6 with a high memory performance will inspire further development of robust electronics using lead-free double perovskites.
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Affiliation(s)
- Xue-Feng Cheng
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
| | - Wen-Hu Qian
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
- Testing and Analysis Center, Soochow University, Suzhou, 215123, P. R. China
| | - Jia Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
| | - Chuang Yu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
| | - Jing-Hui He
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
| | - Hua Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
| | - Qing-Feng Xu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
| | - Dong-Yun Chen
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
| | - Na-Jun Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
| | - Jian-Mei Lu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
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102
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Jung H, Kim YH, Kim J, Yoon TS, Kang CJ, Yoon S, Lee HH. Analog Memristive Characteristics of Mesoporous Silica-Titania Nanocomposite Device Concurrent with Selection Diode Property. ACS APPLIED MATERIALS & INTERFACES 2019; 11:36807-36816. [PMID: 31514504 DOI: 10.1021/acsami.9b09135] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A threshold resistive switching (RS) device concurrently demonstrating analog memristive property with mesoporous silica-titania (m-ST) nanocomposites is introduced in this study. The nanostructured m-ST layer in an Al/m-ST/Pt device was constructed by facile soft templating of evaporation-induced self-assembly (EISA) method to demonstrate nonlinear threshold RS behaviors accompanying with discrete synaptic characteristics along with adaptive motions. The EISA layer was composed of well-ordered mesopores (∼10 nm), where paths of electrical currents could be controllably guided and sequentially activated by repeated voltage sweeps. The combinational memristive behavior accompanying the shift of threshold voltage (Vth) could implicate concurrent performances of threshold RS and selection diode devices. In addition, synaptic functionalities of long-term potentiation and depression were characterized by variations of pulse timing width (7-100 ms). Physical and chemical features of the m-ST were analyzed with Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, field emission scanning electron microscopy, high-resolution transmission electron microscopy, and optical microscopy to investigate the unique origin of dual operation modes of the device. The m-ST synaptic device could have potential for further development of a hybrid selection diode having both a low sneaky current loss and memristive characteristics accomplishing low level of cross-talk between RS devices.
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Affiliation(s)
| | | | - Jaekwang Kim
- School of Integrative Engineering , Chung-Ang University , 84, Heuk Seok-ro , Dongjak-gu 06974 , Republic of Korea
| | | | | | - Songhun Yoon
- School of Integrative Engineering , Chung-Ang University , 84, Heuk Seok-ro , Dongjak-gu 06974 , Republic of Korea
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103
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Cao X, Han Y, Zhou J, Zuo W, Gao X, Han L, Pang X, Zhang L, Liu Y, Cao S. Enhanced Switching Ratio and Long-Term Stability of Flexible RRAM by Anchoring Polyvinylammonium on Perovskite Grains. ACS APPLIED MATERIALS & INTERFACES 2019; 11:35914-35923. [PMID: 31495172 DOI: 10.1021/acsami.9b12931] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The ON/OFF ratio and long-term stability are two important issues for flexible organic-inorganic hybrid perovskite (OHP) resistive random access memory (RRAM) for practical applications. In this work, polyvinylammonium (PVAm) is applied to partially replace methylamine ions (MA+) to fabricate the stable and flexible polymeric OHP RRAM devices, wherein PVAm acts as nucleation sites and the template for crystalline growth of MAPbI3 to tune the microscopic perovskite structure. Simultaneously, the multiple perovskite grain interfaces are strengthened through the long-carbochain polymeric backbone, hence producing a continuous and compact perovskite film. As a result, the PVAm-modified OHP RRAM device shows remarkable enhancement of the ON/OFF ratio, long-term stability, and flexibility compared with the unmodified OHP device. Specifically, the polymeric OHP device exhibits fast and stable nonvolatile resistive switching (RS) characteristics with an ON/OFF ratio of ∼105 and a set voltage of -0.45 V under ambient conditions. Also, the distinct multilevel RS behavior can be realized in this device by controlling the compliance current in the SET process. Additionally, the unsealed polymeric OHP device manifests the striking long-term stability, which can still maintain the stable memory performance after 1 year exposure to the humid and thermal ambient environment. Furthermore, the flexible polymeric OHP device was also fabricated and affords the excellent bending endurance behavior by showing a reproducible RS property over 100-cycle bending experiments. This work provides a new perovskite-based material design strategy of polymeric OHP for stable and flexible RRAM devices with the high ON/OFF ratio.
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Affiliation(s)
| | | | | | | | | | - Lifeng Han
- College of Materials and Chemical Engineering , Zhengzhou University of Light Industry , Zhengzhou 450002 , People's Republic of China
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104
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Wang L, Chen P, Kuttipillai PS, King I, Staples R, Sun K, Lunt RR. Epitaxial Stabilization of Tetragonal Cesium Tin Iodide. ACS APPLIED MATERIALS & INTERFACES 2019; 11:32076-32083. [PMID: 31268658 DOI: 10.1021/acsami.9b05592] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A full range of optoelectronic devices has been demonstrated incorporating hybrid organic-inorganic halide perovskites including high-performance photovoltaics, light emitting diodes, and lasers. Tin-based inorganic halide perovskites, such as CsSnX3 (X = Cl, Br, I), have been studied as promising candidates that avoid toxic lead halide compositions. One of the main obstacles for improving the properties of all-inorganic perovskites and transitioning their use to high-end electronic applications is obtaining crystalline thin films with minimal crystal defects, despite their reputation for defect tolerance in photovoltaic applications. In this study, the single-domain epitaxial growth of cesium tin iodide (CsSnI3) on closely lattice matched single-crystal potassium chloride (KCl) substrates is demonstrated. Using in situ real-time diffraction techniques, we find a new epitaxially-stabilized tetragonal phase at room temperature that expands the possibility for controlling electronic properties. We also exploit controllable epitaxy to grow multilayer two-dimensional quantum wells and demonstrate epitaxial films in a lateral photodetector architecture. This work provides insight into the phase control during halide perovskite epitaxy and expands the selection of epitaxially accessible materials from this exciting class of compounds.
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Affiliation(s)
| | | | | | | | | | - Kai Sun
- Department of Materials Science and Engineering , University of Michigan , Ann Arbor , Michigan 48109 , United States
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105
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Chen Y, Song J, Wu Y, Ding S, Hou P, Song H, Wang J, Zhong X. The resistive switching behaviors of a flexible device based on a SrTiO3film. ACTA ACUST UNITED AC 2019. [DOI: 10.1209/0295-5075/127/26001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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106
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Xiong Z, Hu W, She Y, Lin Q, Hu L, Tang X, Sun K. Air-Stable Lead-Free Perovskite Thin Film Based on CsBi 3I 10 and Its Application in Resistive Switching Devices. ACS APPLIED MATERIALS & INTERFACES 2019; 11:30037-30044. [PMID: 31342747 DOI: 10.1021/acsami.9b09080] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The development of organic-inorganic hybrid perovskite materials has been rapid in recent years; but their applications are limited by the toxicity and stability of the materials. To address these issues in the context of resistive switching devices, an inorganic lead-free perovskite namely CsBi3I10 is developed. Uniform and pinhole-free CsBi3I10 thin films can be fabricated by using CsI-rich precursor solution via a facile antisolvent-assisted spin-coating method. The nonvolatile resistive switching devices based on CsBi3I10 demonstrate a large on/off ratio (103), reliable retention properties (104 s), and endurance (150 cycles). Conductive atomic force microscopy reveals that the high- and low-resistance states are formed by breaking and formation of conductive filaments in the perovskite thin film. Because of the excellent stability of the CsBi3I10 perovskite, the devices exhibit no obvious change in resistive switching behavior even after over 2 month storage in an ambient (60% relative humidity) environment. Our work suggests that the all-inorganic lead-free CsBi3I10 perovskite has great potential in resistive switching memory as well as in other optoelectronic devices where toxicity and stability are a concern.
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107
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Choi ES, Yang JM, Kim SG, Cuhadar C, Kim SY, Kim SH, Lee D, Park NG. The effect of compositional engineering of imidazolium lead iodide on the resistive switching properties. NANOSCALE 2019; 11:14455-14464. [PMID: 31334742 DOI: 10.1039/c9nr02885d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We report here resistive switching memory characteristics of imidazolium lead iodide depending on the molar ratio of PbI2 to imidazolium iodide (ImI), that is, PbI2 : ImI = 1 : 0, 1 : 0.5, 1 : 1, 1 : 2, 1 : 3 and 0 : 1. X-ray diffraction confirms that the stoichiometric composition results in a hexagonal structure of (Im)PbI3, showing a one-dimensional face-sharing [PbI3-] chain. Bipolar resistive switching characteristics are observed regardless of the mixing ratio, where the forming process is required prior to SET and RESET processes at around +0.2 V and -0.2 V, respectively. The ON/OFF ratio is increased from 106 to 109 as the ImI content is increased due to the increased HRS associated with the pronounced insulating characteristics by ImI, whereas, the stoichiometric (Im)PbI3 exhibits 5 times longer endurance (103) and an order of magnitude longer retention time (104 s) as compared to other compositions. Multilevel data storage capability is confirmed by changing the compliance current. The low resistance state (LRS) and the high resistance state (HRS) are associated with Ohmic conduction and Schottky conduction, respectively. Density functional theory (DFT) calculation reveals that the defect formation energy of iodine vacancy is estimated to be low indicating that (Im)PbI3 has a sufficient concentration of iodide vacancy for filament formation. Further energy barrier calculations show that iodide migration preferentially occurs along the 1-dimensional [234] crystallographic direction rather than the interlayer [130] direction. A good performance of the (Im)PbI3-based memristor is thus related to the low defect formation energy of iodide vacancy and the preferential growth of the filament along the 1-dimensional chain.
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Affiliation(s)
- Eun-Suk Choi
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Korea.
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108
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Kim SY, Yang JM, Choi ES, Park NG. Effect of interlayer spacing in layered perovskites on resistive switching memory. NANOSCALE 2019; 11:14330-14338. [PMID: 31322635 DOI: 10.1039/c9nr00438f] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We report here the effect of interlayer spacing in 2-dimensional (2D) perovskites of [C6H5(CH2)nNH3]2PbI4 (anilinium (An) for n = 0, benzylammonium (BzA) for n = 1 and phenylethylammonium (PEA) for n = 2) on resistive switching properties. X-ray diffraction (XRD) reveals that the interlayer spacing of layered PbI2 is increased from 6.98 Å to 13.29 Å for (An)2PbI4, 14.20 Å for (BzA)2PbI4 and 15.92 Å for (PEA)2PbI4, which leads to a monolayer of organic cations with stacked benzene rings between inorganic PbI42- layers. All the samples in the device structure of Ag/PMMA (polymethyl methacrylate)/perovskite/Pt show bipolar switching behavior, where the SET voltage is near +0.2 V and the RESET voltage is less than -0.5 V. The ratio of LRS (low resistance state) to HRS (high resistance state), also called the ON/OFF ratio, is increased from 106 to 108 as interlayer spacing is increased due to the gradual increase in resistance in the HRS. Endurance is slightly improved from 1.3 × 102 for An to 2.2 × 102 for PEA, whereas substantial improvement in retention is observed from 2 × 103 to 5.5 × 103. This indicates that the enhanced 2D structure is beneficial to the kinetics of forming and rupturing the conducting filaments. The ohmic-like conduction mechanism in the LRS and the hopping mechanism in the HRS are observed for all three samples. This work finds that the resistive switching properties and conduction mechanism in the HRS depend on interlayer spacing in 2D perovskites.
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Affiliation(s)
- So-Yeon Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Korea.
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109
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Jiang T, Shao Z, Fang H, Wang W, Zhang Q, Wu D, Zhang X, Jie J. High-Performance Nanofloating Gate Memory Based on Lead Halide Perovskite Nanocrystals. ACS APPLIED MATERIALS & INTERFACES 2019; 11:24367-24376. [PMID: 31187623 DOI: 10.1021/acsami.9b03474] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Lead halide perovskites have been extensively investigated in a host of optoelectronic devices, such as solar cells, light-emitting diodes, and photodetectors. The halogen vacancy defects arising from the halogen-poor growth environment are normally regarded as an unfavorable factor to restrict the device performance. Here, for the first time, we demonstrate the utilization of the vacancy defects in lead halide perovskite nanostructures for achieving high-performance nanofloating gate memories (NFGMs). CH3NH3PbBr3 nanocrystals (NCs) were uniformly decorated on the CdS nanoribbon (NR) surface via a facile dip-coating process, forming a CdS NR/CH3NH3PbBr3 NC core-shell structure. Significantly, owing to the existence of sufficient carrier trapping states in CH3NH3PbBr3 NCs, the hybrid device possessed an ultralarge memory window up to 77.4 V, a long retention time of 12 000 s, a high current ON/OFF ratio of 7 × 107, and a long-term air stability for 50 days. The memory window of the device is among the highest for the low-dimensional nanostructure-based NFGMs. Also, this strategy shows good universality and can be extended to other perovskite nanostructures for the construction of high-performance NFGMs. This work paves the way toward the fabrication of new-generation, high-capacity nonvolatile memories using lead halide perovskite nanostructures.
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Affiliation(s)
- Tianhao Jiang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu 215123 , P. R. China
| | - Zhibin Shao
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu 215123 , P. R. China
| | - Huan Fang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu 215123 , P. R. China
| | - Wei Wang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu 215123 , P. R. China
| | - Qiao Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu 215123 , P. R. China
| | - Di Wu
- School of Physics and Engineering, and Key Laboratory of Material Physics, Ministry of Education , Zhengzhou University , Zhengzhou , Henan 450052 , P. R. China
| | - Xiujuan Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu 215123 , P. R. China
| | - Jiansheng Jie
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu 215123 , P. R. China
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110
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Ercan E, Tsai PC, Chen JY, Lam JY, Hsu LC, Chueh CC, Chen WC. Stretchable and Ambient Stable Perovskite/Polymer Luminous Hybrid Nanofibers of Multicolor Fiber Mats and Their White LED Applications. ACS APPLIED MATERIALS & INTERFACES 2019; 11:23605-23615. [PMID: 31252500 DOI: 10.1021/acsami.9b05527] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
We report the fabrication and optical/mechanical properties of perovskite/thermoplastic polyurethane (TPU)-based multicolor luminescent core-shell nanofibers and their large-scale fiber mats. One-step coaxial perovskite/TPU nanofibers had a high photoluminescence quantum yield value exceeding 23.3%, surpassing that of its uniaxial counterpart, due to the homogeneous distribution of perovskite nanoparticles (NPs) by the confinement of the TPU shell. The fabricated core-shell nanofibers exhibited a high mechanical endurance owing to the well elastic properties of TPU and maintained the luminescence intensity even under a 100% stretched state after 1000 stretching-relaxing cycles. By taking advantage of the hydrophobic nature of TPU, the ambient and moisture stability of the fabricated fibers were enhanced up to 1 month. Besides, large-area stretchable nanofibers with a dimension of 15 cm × 30 cm exhibiting various visible-light emission peaks were fabricated by changing the composition of perovskite NPs. Moreover, a large-scale luminescent and stretchable fiber mat was successfully fabricated by electrospinning. Furthermore, the white-light emission from the fabricated fibers and mats was achieved by incorporating orange-light-emitting poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] into the TPU shell and coupling the turquoise blue-light-emitting perovskite NPs in the core site. Finally, the integrity of the perovskite-based TPU fibers was realized by fabricating a light-emitting diode (LED) device containing the orange-light-emitting fibers embedded in the polyfluorene emissive layer. This work demonstrated an effective way to prepare stable and stretchable luminous nanofibers and the integration of such nanofibers into LED devices, which could facilitate the future development of wearable electronic devices.
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111
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Wang H, Yao Y, He Z, Rao W, Hu L, Chen S, Lin J, Gao J, Zhang P, Sun X, Wang X, Cui Y, Wang Q, Dong S, Chen G, Liu J. A Highly Stretchable Liquid Metal Polymer as Reversible Transitional Insulator and Conductor. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1901337. [PMID: 30972851 DOI: 10.1002/adma.201901337] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Indexed: 05/23/2023]
Abstract
Materials with a temperature-controlled reversible electrical transition between insulator and conductor are attracting huge attention due to their promising applications in many fields. However, most of them are intrinsically rigid and require complicated fabrication processes. Here, a highly stretchable (680% strain) liquid metal polymer composite as a reversible transitional insulator and conductor (TIC), which is accompanied with huge resistivity changes (more than 4 × 109 times) reversibly through a tuning temperature in a few seconds is introduced. When frozen, the insulated TIC becomes conductive and recovers after warming. Both the phase change of the liquid metal droplets and the rigidity change of the polymer contribute directly to transition between insulator and conductor. A simplified model is established to predict the expansion and connection of liquid metal droplets. Along with high stretchability, straightforward fabrication methods, rapid triggering time, large switching ratio, good repeatability, the TIC offers tremendous possibilities for numerous applications, like stretchable switches, semiconductors, temperature sensors, and resistive random-access memory. Accordingly, a system that can display numbers and letters via converting alternative TIC temperature to a binary signal on a computer is conceived and demonstrated. The present discovery suggests a general strategy for fabricating and stimulating a stretchable transitional insulator and conductor based on liquid metal and allied polymers.
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Affiliation(s)
- Hongzhang Wang
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, 100084, China
| | - Youyou Yao
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, 100084, China
| | - Zhizhu He
- Department of Vehicle Engineering, College of Engineering, China Agricultural University, Beijing, 100083, China
| | - Wei Rao
- Beijing Key Lab of Cryobiomedical Engineering and Key Lab of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Liang Hu
- Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Sen Chen
- Beijing Key Lab of Cryobiomedical Engineering and Key Lab of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ju Lin
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, 100084, China
| | - Jianye Gao
- Beijing Key Lab of Cryobiomedical Engineering and Key Lab of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Pengju Zhang
- Beijing Key Lab of Cryobiomedical Engineering and Key Lab of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Xuyang Sun
- Beijing Key Lab of Cryobiomedical Engineering and Key Lab of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Xiangjiang Wang
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, 100084, China
| | - Yuntao Cui
- Beijing Key Lab of Cryobiomedical Engineering and Key Lab of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Qian Wang
- Beijing Key Lab of Cryobiomedical Engineering and Key Lab of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Shijin Dong
- Beijing Key Lab of Cryobiomedical Engineering and Key Lab of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Guozhen Chen
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, 100084, China
| | - Jing Liu
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, 100084, China
- Beijing Key Lab of Cryobiomedical Engineering and Key Lab of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
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112
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Yan X, Zhao Q, Chen AP, Zhao J, Zhou Z, Wang J, Wang H, Zhang L, Li X, Xiao Z, Wang K, Qin C, Wang G, Pei Y, Li H, Ren D, Chen J, Liu Q. Vacancy-Induced Synaptic Behavior in 2D WS 2 Nanosheet-Based Memristor for Low-Power Neuromorphic Computing. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1901423. [PMID: 31045332 DOI: 10.1002/smll.201901423] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 04/21/2019] [Indexed: 05/19/2023]
Abstract
Memristors with nonvolatile memory characteristics have been expected to open a new era for neuromorphic computing and digital logic. However, existing memristor devices based on oxygen vacancy or metal-ion conductive filament mechanisms generally have large operating currents, which are difficult to meet low-power consumption requirements. Therefore, it is very necessary to develop new materials to realize memristor devices that are different from the mechanisms of oxygen vacancy or metal-ion conductive filaments to realize low-power operation. Herein, high-performance and low-power consumption memristors based on 2D WS2 with 2H phase are demonstrated, which show fast ON (OFF) switching times of 13 ns (14 ns), low program current of 1 µA in the ON state, and SET (RESET) energy reaching the level of femtojoules. Moreover, the memristor can mimic basic biological synaptic functions. Importantly, it is proposed that the generation of sulfur and tungsten vacancies and electron hopping between vacancies are dominantly responsible for the resistance switching performance. Density functional theory calculations show that the defect states formed by sulfur and tungsten vacancies are at deep levels, which prevent charge leakage and facilitate the realization of low-power consumption for neuromorphic computing application.
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Affiliation(s)
- Xiaobing Yan
- National-Local Joint Engineering Laboratory of New Energy Photovoltaic Devices, Key Laboratory of Digital Medical Engineering of Hebei Province, College of Electron and Information Engineering, Hebei University, Baoding, 071002, P. R. China
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117576, Singapore
| | - Qianlong Zhao
- National-Local Joint Engineering Laboratory of New Energy Photovoltaic Devices, Key Laboratory of Digital Medical Engineering of Hebei Province, College of Electron and Information Engineering, Hebei University, Baoding, 071002, P. R. China
| | - Andy Paul Chen
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117576, Singapore
| | - Jianhui Zhao
- National-Local Joint Engineering Laboratory of New Energy Photovoltaic Devices, Key Laboratory of Digital Medical Engineering of Hebei Province, College of Electron and Information Engineering, Hebei University, Baoding, 071002, P. R. China
| | - Zhenyu Zhou
- National-Local Joint Engineering Laboratory of New Energy Photovoltaic Devices, Key Laboratory of Digital Medical Engineering of Hebei Province, College of Electron and Information Engineering, Hebei University, Baoding, 071002, P. R. China
| | - Jingjuan Wang
- National-Local Joint Engineering Laboratory of New Energy Photovoltaic Devices, Key Laboratory of Digital Medical Engineering of Hebei Province, College of Electron and Information Engineering, Hebei University, Baoding, 071002, P. R. China
| | - Hong Wang
- National-Local Joint Engineering Laboratory of New Energy Photovoltaic Devices, Key Laboratory of Digital Medical Engineering of Hebei Province, College of Electron and Information Engineering, Hebei University, Baoding, 071002, P. R. China
| | - Lei Zhang
- National-Local Joint Engineering Laboratory of New Energy Photovoltaic Devices, Key Laboratory of Digital Medical Engineering of Hebei Province, College of Electron and Information Engineering, Hebei University, Baoding, 071002, P. R. China
| | - Xiaoyan Li
- National-Local Joint Engineering Laboratory of New Energy Photovoltaic Devices, Key Laboratory of Digital Medical Engineering of Hebei Province, College of Electron and Information Engineering, Hebei University, Baoding, 071002, P. R. China
| | - Zuoao Xiao
- National-Local Joint Engineering Laboratory of New Energy Photovoltaic Devices, Key Laboratory of Digital Medical Engineering of Hebei Province, College of Electron and Information Engineering, Hebei University, Baoding, 071002, P. R. China
| | - Kaiyang Wang
- National-Local Joint Engineering Laboratory of New Energy Photovoltaic Devices, Key Laboratory of Digital Medical Engineering of Hebei Province, College of Electron and Information Engineering, Hebei University, Baoding, 071002, P. R. China
| | - Cuiya Qin
- National-Local Joint Engineering Laboratory of New Energy Photovoltaic Devices, Key Laboratory of Digital Medical Engineering of Hebei Province, College of Electron and Information Engineering, Hebei University, Baoding, 071002, P. R. China
| | - Gong Wang
- National-Local Joint Engineering Laboratory of New Energy Photovoltaic Devices, Key Laboratory of Digital Medical Engineering of Hebei Province, College of Electron and Information Engineering, Hebei University, Baoding, 071002, P. R. China
| | - Yifei Pei
- National-Local Joint Engineering Laboratory of New Energy Photovoltaic Devices, Key Laboratory of Digital Medical Engineering of Hebei Province, College of Electron and Information Engineering, Hebei University, Baoding, 071002, P. R. China
| | - Hui Li
- National-Local Joint Engineering Laboratory of New Energy Photovoltaic Devices, Key Laboratory of Digital Medical Engineering of Hebei Province, College of Electron and Information Engineering, Hebei University, Baoding, 071002, P. R. China
| | - Deliang Ren
- National-Local Joint Engineering Laboratory of New Energy Photovoltaic Devices, Key Laboratory of Digital Medical Engineering of Hebei Province, College of Electron and Information Engineering, Hebei University, Baoding, 071002, P. R. China
| | - Jingsheng Chen
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117576, Singapore
| | - Qi Liu
- Key Laboratory of Microelectronic Devices & Integrated Technology, Institute of Microelectronics, Chinese Academy of Sciences, Beijing, 100029, P. R. China
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113
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Kang K, Ahn H, Song Y, Lee W, Kim J, Kim Y, Yoo D, Lee T. High-Performance Solution-Processed Organo-Metal Halide Perovskite Unipolar Resistive Memory Devices in a Cross-Bar Array Structure. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1804841. [PMID: 30932266 DOI: 10.1002/adma.201804841] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 02/25/2019] [Indexed: 06/09/2023]
Abstract
Resistive random access memories can potentially open a niche area in memory technology applications by combining the advantages of the long endurance of dynamic random-access memory and the long retention time of flash memories. Recently, resistive memory devices based on organo-metal halide perovskite materials have demonstrated outstanding memory properties, such as a low-voltage operation and a high ON/OFF ratio; such properties are essential requirements for low power consumption in developing practical memory devices. In this study, a nonhalide lead source is employed to deposit perovskite films via a simple single-step spin-coating method for fabricating unipolar resistive memory devices in a cross-bar array architecture. These unipolar perovskite memory devices achieve a high ON/OFF ratio up to 108 with a relatively low operation voltage, a large endurance, and long retention times. The high-yield device fabrication based on the solution-process demonstrated here will be a step toward achieving low-cost and high-density practical perovskite memory devices.
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Affiliation(s)
- Keehoon Kang
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 08826, Korea
| | - Heebeom Ahn
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 08826, Korea
| | - Younggul Song
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 08826, Korea
| | - Woocheol Lee
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 08826, Korea
| | - Junwoo Kim
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 08826, Korea
| | - Youngrok Kim
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 08826, Korea
| | - Daekyoung Yoo
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 08826, Korea
| | - Takhee Lee
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 08826, Korea
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114
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115
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Zhang Q, Solanki A, Parida K, Giovanni D, Li M, Jansen TLC, Pshenichnikov MS, Sum TC. Tunable Ferroelectricity in Ruddlesden-Popper Halide Perovskites. ACS APPLIED MATERIALS & INTERFACES 2019; 11:13523-13532. [PMID: 30854841 DOI: 10.1021/acsami.8b21579] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Ruddlesden-Popper (RP) halide perovskites are the new kids on the block for high-performance perovskite photovoltaics with excellent ambient stability. The layered nature of these perovskites offers an exciting possibility of harnessing their ferroelectric property for photovoltaics. Adjacent polar domains in a ferroelectric material allow the spatial separation of electrons and holes. Presently, the structure-function properties governing the ferroelectric behavior of RP perovskites are an open question. Herein, we realize tunable ferroelectricity in 2-phenylethylammonium (PEA) and methylammonium (MA) RP perovskite (PEA)2(MA) n̅-1Pb n̅I3 n̅+1. Second harmonic generation (SHG) confirms the noncentrosymmetric nature of these polycrystalline thin films, whereas piezoresponse force microscopy and polarization-electric field measurements validate the microscopic and macroscopic ferroelectric properties. Temperature-dependent SHG and dielectric constant measurements uncover a phase transition temperature at around 170 °C in these films. Extensive molecular dynamics simulations support the experimental results and identified the correlated reorientation of MA molecules and ion translations as the source of ferroelectricity. Current-voltage characteristics in the dark reveal the persistence of hysteresis in these devices, which has profound implications for light-harvesting and light-emitting applications. Importantly, our findings disclose a viable approach for engineering the ferroelectric properties of RP perovskites that may unlock new functionalities for perovskite optoelectronics.
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Affiliation(s)
- Qiannan Zhang
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences , Nanyang Technological University , 21 Nanyang Link , Singapore 637371 , Singapore
| | - Ankur Solanki
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences , Nanyang Technological University , 21 Nanyang Link , Singapore 637371 , Singapore
| | - Kaushik Parida
- School of Material Science and Engineering , Nanyang Technological University , 50 Nanyang Avenue , 639798 , Singapore
| | - David Giovanni
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences , Nanyang Technological University , 21 Nanyang Link , Singapore 637371 , Singapore
| | - Mingjie Li
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences , Nanyang Technological University , 21 Nanyang Link , Singapore 637371 , Singapore
| | - Thomas L C Jansen
- Zernike Institute for Advanced Materials , University of Groningen , Nijenborgh 4 , 9747 AG Groningen , The Netherlands
| | - Maxim S Pshenichnikov
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences , Nanyang Technological University , 21 Nanyang Link , Singapore 637371 , Singapore
- Zernike Institute for Advanced Materials , University of Groningen , Nijenborgh 4 , 9747 AG Groningen , The Netherlands
| | - Tze Chien Sum
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences , Nanyang Technological University , 21 Nanyang Link , Singapore 637371 , Singapore
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116
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Maeng I, Lee YM, Park J, Raga SR, Kang C, Kee CS, Yu BD, Hong S, Ono LK, Qi Y, Jung MC, Nakamura M. Significant THz absorption in CH 3NH 2 molecular defect-incorporated organic-inorganic hybrid perovskite thin film. Sci Rep 2019; 9:5811. [PMID: 30967593 PMCID: PMC6456617 DOI: 10.1038/s41598-019-42359-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 03/29/2019] [Indexed: 12/05/2022] Open
Abstract
The valid strong THz absorption at 1.58 THz was probed in the organic-inorganic hybrid perovskite thin film, CH3NH3PbI3, fabricated by sequential vacuum evaporation method. In usual solution-based methods such as 2-step solution and antisolvent, we observed the relatively weak two main absorption peaks at 0.95 and 1.87 THz. The measured absorption spectrum is analyzed by density-functional theory calculations. The modes at 0.95 and 1.87 THz are assigned to the Pb-I vibrations of the inorganic components in the tetragonal phase. By contrast, the origin of the 1.58 THz absorption is due to the structural deformation of Pb-I bonding at the grain boundary incorporated with a CH3NH2 molecular defect.
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Affiliation(s)
- Inhee Maeng
- Advanced Photonics Research Institute, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Young Mi Lee
- Beamline department, Pohang Accelerator Laboratory, POSTECH, Pohang, 37673, Republic of Korea
| | - Jinwoo Park
- Department of Physics, University of Seoul, Seoul, 02504, Republic of Korea
| | - Sonia R Raga
- Energy Materials and Surface Sciences Unit, Okinawa Institute of Science and Technology Graduate University, Okinawa, 904-0495, Japan
- ARC Centre of Excellence in Exciton Science and Department of Chemical Engineering, Monash University, Clayton, VIC, 3800, Australia
| | - Chul Kang
- Advanced Photonics Research Institute, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Chul-Sik Kee
- Advanced Photonics Research Institute, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Byung Deok Yu
- Department of Physics, University of Seoul, Seoul, 02504, Republic of Korea
| | - Suklyun Hong
- Graphene Research Institute and Department of Physics, Sejong University, Seoul, 05006, Republic of Korea
| | - Luis K Ono
- Energy Materials and Surface Sciences Unit, Okinawa Institute of Science and Technology Graduate University, Okinawa, 904-0495, Japan
| | - Yabing Qi
- Energy Materials and Surface Sciences Unit, Okinawa Institute of Science and Technology Graduate University, Okinawa, 904-0495, Japan
| | - Min-Cherl Jung
- Division of Materials Science, Nara Institute of Science and Technology, Nara, 630-0192, Japan.
| | - Masakazu Nakamura
- Division of Materials Science, Nara Institute of Science and Technology, Nara, 630-0192, Japan
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117
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Han JS, Le QV, Choi J, Kim H, Kim SG, Hong K, Moon CW, Kim TL, Kim SY, Jang HW. Lead-Free All-Inorganic Cesium Tin Iodide Perovskite for Filamentary and Interface-Type Resistive Switching toward Environment-Friendly and Temperature-Tolerant Nonvolatile Memories. ACS APPLIED MATERIALS & INTERFACES 2019; 11:8155-8163. [PMID: 30698005 DOI: 10.1021/acsami.8b15769] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Recently, organometallic and all-inorganic halide perovskites (HPs) have become promising materials for resistive switching (RS) nonvolatile memory devices with low power consumption because they show current-voltage hysteresis caused by fast ion migration. However, the toxicity and environmental pollution potential of lead, a common constituent of HPs, has limited the commercial applications of HP-based devices. Here, RS memory devices based on lead-free all-inorganic cesium tin iodide (CsSnI3) perovskites with temperature tolerance are successfully fabricated. The devices exhibit reproducible and reliable bipolar RS characteristics in both Ag and Au top electrodes (TEs) with different switching mechanisms. The Ag TE devices show filamentary RS behavior with ultralow operating voltages (<0.15 V). In contrast, the Au TE devices have interface-type RS behavior with gradual resistance changes. This suggests that the RS characteristics are attributed to either the formation of metal filaments or the ion migration of defects in HPs under applied electric fields. These distinct mechanisms may permit the opportunity to design devices for specific purposes. This work will pave the way for lead-free all-inorganic HP-based nonvolatile memory for commercial application in HP-based devices.
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Affiliation(s)
- Ji Su Han
- Department of Materials Science and Engineering, Research Institute of Advanced Materials , Seoul National University , Seoul 08826 , Republic of Korea
| | - Quyet Van Le
- School of Chemical Engineering and Materials Science , Chung-Ang University , Seoul 06974 , Republic of Korea
- Institute of Research and Development , Duy Tan University , Da Nang 550000 , Vietnam
| | - Jaeho Choi
- Department of Materials Science and Engineering, Research Institute of Advanced Materials , Seoul National University , Seoul 08826 , Republic of Korea
| | - Hyojung Kim
- Department of Materials Science and Engineering, Research Institute of Advanced Materials , Seoul National University , Seoul 08826 , Republic of Korea
| | - Sun Gil Kim
- Department of Materials Science and Engineering, Research Institute of Advanced Materials , Seoul National University , Seoul 08826 , Republic of Korea
| | - Kootak Hong
- Department of Materials Science and Engineering, Research Institute of Advanced Materials , Seoul National University , Seoul 08826 , Republic of Korea
| | - Cheon Woo Moon
- Department of Materials Science and Engineering, Research Institute of Advanced Materials , Seoul National University , Seoul 08826 , Republic of Korea
| | - Taemin Ludvic Kim
- Department of Materials Science and Engineering, Research Institute of Advanced Materials , Seoul National University , Seoul 08826 , Republic of Korea
| | - Soo Young Kim
- School of Chemical Engineering and Materials Science , Chung-Ang University , Seoul 06974 , Republic of Korea
| | - Ho Won Jang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials , Seoul National University , Seoul 08826 , Republic of Korea
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118
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Hong Z, Zhao J, Li S, Cheng B, Xiao Y, Lei S. Tunable hysteresis behaviour related to trap filling dependence of surface barrier in an individual CH 3NH 3PbI 3 micro/nanowire. NANOSCALE 2019; 11:3360-3369. [PMID: 30724937 DOI: 10.1039/c8nr08934e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Hybrid organic-inorganic perovskite (HOIP) materials have remarkable potential in solar cells owing to their high power conversion efficiency and inexpensive preparation. However, their current-voltage (I-V) curves often exhibit hysteresis characteristics, which not only strongly affect the accuracy of measurements but also seriously impair device performance, and, moreover, their actual origin is still the subject of debate. Here, a single HOIP micro/nanowire-based two-terminal device was constructed. Not only can its hysteresis properties be accurately modulated, but also their origin can clearly be identified as variations in the surface barrier related to trap filling. Under illumination of the entire device with visible (VIS) light, two anticlockwise hysteresis loops appear symmetrically in cyclic I-V curves. Interestingly, the cyclic I-V curves can be switchably changed into asymmetrical "8"-shaped hysteresis loops with bipolar resistive switching (RS) features when only the vicinity of one electrode is illuminated. The traps located in the surface space charge region play a crucial role in the tunable hysteresis behaviour. Owing to the presence of abundant surface states, two back-to-back connected diodes related to the surface barrier can be formed in the two-terminal device. With the synergistic assistance of illumination and bias, moreover, the injection and extraction of holes in the surface space charge region can effectively modulate the surface barrier, which triggers the formation of a bipolar RS device. Accordingly, two switchable back-to-back connected bipolar RS devices were built. Regarding the tunable hysteresis with nonvolatile memory properties controlled by the synergistic action of bias and illumination, our results provide a valuable insight into the identification of its origin and, furthermore, also indicate that the HOIP materials have significant potential in nonvolatile memory applications.
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Affiliation(s)
- Zhen Hong
- School of Materials Science and Engineering, Nanchang University, Jiangxi 330031, P. R. China.
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119
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Qi Y, Sun B, Fu G, Li T, Zhu S, Zheng L, Mao S, Kan X, Lei M, Chen Y. A nonvolatile organic resistive switching memory based on lotus leaves. Chem Phys 2019. [DOI: 10.1016/j.chemphys.2018.09.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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120
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Gao S, Yi X, Shang J, Liu G, Li RW. Organic and hybrid resistive switching materials and devices. Chem Soc Rev 2019; 48:1531-1565. [DOI: 10.1039/c8cs00614h] [Citation(s) in RCA: 211] [Impact Index Per Article: 42.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This review presents a timely and comprehensive summary of organic and hybrid materials for nonvolatile resistive switching memory applications in the “More than Moore” era, with particular attention on their designing principles for electronic property tuning and flexible memory performance.
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Affiliation(s)
- Shuang Gao
- CAS Key Laboratory of Magnetic Materials and Devices
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
- China
| | - Xiaohui Yi
- CAS Key Laboratory of Magnetic Materials and Devices
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
- China
| | - Jie Shang
- CAS Key Laboratory of Magnetic Materials and Devices
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
- China
| | - Gang Liu
- CAS Key Laboratory of Magnetic Materials and Devices
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
- China
| | - Run-Wei Li
- CAS Key Laboratory of Magnetic Materials and Devices
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
- China
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121
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Mao S, Sun B, Yu T, Mao W, Zhu S, Ni Y, Wang H, Zhao Y, Chen Y. pH-Modulated memristive behavior based on an edible garlic-constructed bio-electronic device. NEW J CHEM 2019. [DOI: 10.1039/c9nj02433f] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A new type of memristive memory device with an edible garlic-constructed Ag/garlic/fluorine-doped SnO2(FTO) structure for analog neuromorphic sensor applications was designed.
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Affiliation(s)
- Shuangsuo Mao
- School of Physical Science and Technology
- Superconductivity and New Energy R&D Center (SNERDC)
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Bai Sun
- School of Physical Science and Technology
- Superconductivity and New Energy R&D Center (SNERDC)
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Tian Yu
- College of Physical Science and Technology
- Sichuan University
- Chengdu 610064
- China
| | - Weiwei Mao
- School of Science
- Nanjing University of Posts and Telecommunications (NUPT)
- Nanjing 210023
- China
| | - Shouhui Zhu
- School of Physical Science and Technology
- Superconductivity and New Energy R&D Center (SNERDC)
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Yuxiang Ni
- School of Physical Science and Technology
- Superconductivity and New Energy R&D Center (SNERDC)
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Hongyan Wang
- School of Physical Science and Technology
- Superconductivity and New Energy R&D Center (SNERDC)
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Yong Zhao
- School of Physical Science and Technology
- Superconductivity and New Energy R&D Center (SNERDC)
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Yuanzheng Chen
- School of Physical Science and Technology
- Superconductivity and New Energy R&D Center (SNERDC)
- Southwest Jiaotong University
- Chengdu 610031
- China
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122
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Zimmermann I, Aghazada S, Nazeeruddin MK. Lead and HTM Free Stable Two‐Dimensional Tin Perovskites with Suitable Band Gap for Solar Cell Applications. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201811497] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Iwan Zimmermann
- Ecole Polytechnique Federale de Lausanne (EPFL) Rue de l'industrie 17 1950 Sion Switzerland
| | - Sadig Aghazada
- Ecole Polytechnique Federale de Lausanne (EPFL) Rue de l'industrie 17 1950 Sion Switzerland
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123
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Zimmermann I, Aghazada S, Nazeeruddin MK. Lead and HTM Free Stable Two-Dimensional Tin Perovskites with Suitable Band Gap for Solar Cell Applications. Angew Chem Int Ed Engl 2018; 58:1072-1076. [PMID: 30462878 DOI: 10.1002/anie.201811497] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Indexed: 11/07/2022]
Abstract
Organic-inorganic hybrid perovskites have attracted great attention over the last few years as potential light-harvesting materials for efficient and cost-effective solar cells. However, the use of lead iodide in state-of-the-art perovskite devices may demonstrate an obstacle for future commercialization due to toxicity of lead. Herein we report on the synthesis and characterization of low dimensional tin-based perovskites. We found that the use of symmetrical imidazolium-based cations such as benzimidazolium (Bn) and benzodiimidazolium (Bdi) allow the formation of 2D perovskites with relatively narrow band gaps compared to traditional -NH3 + amino groups, with optical band gap values of 1.81 eV and 1.79 eV for Bn2 SnI4 and BdiSnI4 respectively. Furthermore, we demonstrate that the optical properties in this class of perovskites can be tuned by formation of a quasi 2D perovskite with the formula Bn2 FASn2 I7 . Additionally, we investigate the change in band gap in the mixed Sn/Pb solid solution Bn2 Snx Pbx-1 I4 . Devices fabricated with Bn2 SnI4 show promising efficiencies of around 2.3 %.
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Affiliation(s)
- Iwan Zimmermann
- Ecole Polytechnique Federale de Lausanne (EPFL), Rue de l'industrie 17, 1950, Sion, Switzerland
| | - Sadig Aghazada
- Ecole Polytechnique Federale de Lausanne (EPFL), Rue de l'industrie 17, 1950, Sion, Switzerland
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124
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Buchhorn M, Wedler S, Panzer F. Setup to Study the in Situ Evolution of Both Photoluminescence and Absorption during the Processing of Organic or Hybrid Semiconductors. J Phys Chem A 2018; 122:9115-9122. [PMID: 30358396 DOI: 10.1021/acs.jpca.8b07495] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In situ measurement techniques, applied during the solution processing of novel semiconductors such as organic semiconductors or hybrid perovskites, have become more and more important to understand their film formation. In that context, it is crucial to determine how the optical properties, namely photoluminescence (PL) and absorption, evolve during processing. However, until now PL and absorption have mostly been investigated independently, significantly reducing the potential insights into film formation dynamics. To tackle this issue we present the development of a detection system that allows simultaneous measurement of full absorption and PL spectra during solution processing of the investigated film. We also present a spin-coater system attachable to the detection system, where the temperature of the substrate on which the film is processed can be changed. We performed test measurements by spin coating the well-known conjugated polymer P3HT demonstrating the potential of this technique. By considering absorption and corresponding PL, we extract the PL quantum yield (PLQY) during processing, which decreases with substrate temperature. Furthermore, we identify a significant red shift of the PL just prior to the onset of the aggregation process, indicating the importance of chain planarization prior to solid film formation.
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Affiliation(s)
- Michael Buchhorn
- Soft Matter Optoelectronics , University of Bayreuth , Bayreuth 95440 , Germany
| | - Stefan Wedler
- Soft Matter Optoelectronics , University of Bayreuth , Bayreuth 95440 , Germany
| | - Fabian Panzer
- Soft Matter Optoelectronics , University of Bayreuth , Bayreuth 95440 , Germany
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125
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Lin CY, Zhang D, Sun XY, Wei L, Xue ZZ, Pan J, Wang GM. The structures, photoluminescence and photocatalytic properties of two types of iodocuprate hybrids. INORG CHEM COMMUN 2018. [DOI: 10.1016/j.inoche.2018.09.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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126
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Choi J, Han JS, Hong K, Kim SY, Jang HW. Organic-Inorganic Hybrid Halide Perovskites for Memories, Transistors, and Artificial Synapses. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1704002. [PMID: 29847692 DOI: 10.1002/adma.201704002] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 10/29/2017] [Indexed: 05/25/2023]
Abstract
Fascinating characteristics of halide perovskites (HPs), which cannot be seen in conventional semiconductors and metal oxides, have boosted the application of HPs in electronic devices beyond optoelectronics such as solar cells, photodetectors, and light-emitting diodes. Here, recent advances in HP-based memory and logic devices such as resistive-switching memories (i.e., resistive random access memory (RRAM) or memristors), transistors, and artificial synapses are reviewed, focusing on inherently exotic properties of HPs: i) tunable bandgap, ii) facile majority carrier control, iii) fast ion migration, and iv) superflexibility. Various fabrication techniques of HP thin films from solution-based methods to vacuum processes are introduced. Up-to-date work in the field, emphasizing the compositional flexibility of HPs, suggest that HPs are promising candidates for next-generation electronic devices. Taking advantages of their unique electrical properties, low-cost and low-temperature synthesis, and compositional and mechanical flexibility, HPs have enormous potential to provide a new platform for future electronic devices and explosively intensive studies will pave the way in finding new HP materials beyond conventional silicon-based semiconductors to keep up with "More-than-Moore" times.
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Affiliation(s)
- Jaeho Choi
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ji Su Han
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Kootak Hong
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Soo Young Kim
- School of Chemical Engineering and Materials Science, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Ho Won Jang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
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127
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Ge S, Wang Y, Xiang Z, Cui Y. Reset Voltage-Dependent Multilevel Resistive Switching Behavior in CsPb 1- xBi xI 3 Perovskite-Based Memory Device. ACS APPLIED MATERIALS & INTERFACES 2018; 10:24620-24626. [PMID: 29969009 DOI: 10.1021/acsami.8b07079] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
All-inorganic CsPb1- xBi xI3 perovskite film was successfully fabricated by incorporating Bi3+ in CsPbI3 to stabilize the cubic lattice. Furthermore, the perovskite film was applied to manufacture a simple Ag/CsPb1- xBi xI3/indium tin oxide (ITO) memory device with a bipolar resistive switching behavior. Nonvolatile, reliable, and reproducible switching properties are demonstrated through retention and endurance test under fully open-air conditions. The memory device also presents highly uniform and long-term stable characteristics. Importantly, by modulating the reset stop voltages, multilevel high-resistance states are observed for the first time in lead halide perovskite memory device. The resistive switching behavior is proposed to explain the formation and partial rupture of conductive multifilament that are dominated by the migration of iodine ions and their corresponding vacancies in perovskite film. This study suggests Ag/CsPb1- xBi xI3/ITO device potential application for multilevel data storage in a nonvolatile memory device.
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Affiliation(s)
- Shuaipeng Ge
- Key Laboratory of Micro-Nano Measurement-Manipulation and Physics, Ministry of Education, Department of Physics , Beihang University , Beijing 100191 , China
| | - Yuhang Wang
- State Key Laboratory of Low-Dimensional Quantum Physics, Collaborative Innovation Center of Quantum Matter, Department of Physics , Tsinghua University , Beijing 100084 , China
| | - Zhongcheng Xiang
- Key Laboratory of Micro-Nano Measurement-Manipulation and Physics, Ministry of Education, Department of Physics , Beihang University , Beijing 100191 , China
| | - Yimin Cui
- Key Laboratory of Micro-Nano Measurement-Manipulation and Physics, Ministry of Education, Department of Physics , Beihang University , Beijing 100191 , China
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128
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Wang Y, Lv Z, Liao Q, Shan H, Chen J, Zhou Y, Zhou L, Chen X, Roy VAL, Wang Z, Xu Z, Zeng YJ, Han ST. Synergies of Electrochemical Metallization and Valance Change in All-Inorganic Perovskite Quantum Dots for Resistive Switching. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1800327. [PMID: 29782667 DOI: 10.1002/adma.201800327] [Citation(s) in RCA: 105] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 03/22/2018] [Indexed: 06/08/2023]
Abstract
The in-depth understanding of ions' generation and movement inside all-inorganic perovskite quantum dots (CsPbBr3 QDs), which may lead to a paradigm to break through the conventional von Neumann bottleneck, is strictly limited. Here, it is shown that formation and annihilation of metal conductive filaments and Br- ion vacancy filaments driven by an external electric field and light irradiation can lead to pronounced resistive-switching effects. Verified by field-emission scanning electron microscopy as well as energy-dispersive X-ray spectroscopy analysis, the resistive switching behavior of CsPbBr3 QD-based photonic resistive random-access memory (RRAM) is initiated by the electrochemical metallization and valance change. By coupling CsPbBr3 QD-based RRAM with a p-channel transistor, the novel application of an RRAM-gate field-effect transistor presenting analogous functions of flash memory is further demonstrated. These results may accelerate the technological deployment of all-inorganic perovskite QD-based photonic resistive memory for successful logic application.
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Affiliation(s)
- Yan Wang
- College of Electronic Science and Technology, Shenzhen University, Shenzhen, 518060, P. R. China
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Ziyu Lv
- College of Electronic Science and Technology, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Qiufan Liao
- Shenzhen Key Laboratory of Laser Engineering, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Haiquan Shan
- Department of Chemistry, South University of Science and Technology of China, No 1088, Xueyuan Road, Xili, Nanshan District, Shenzhen, Guangdong, 518055, P. R. China
| | - Jinrui Chen
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Ye Zhou
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Li Zhou
- College of Electronic Science and Technology, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Xiaoli Chen
- College of Electronic Science and Technology, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Vellaisamy A L Roy
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong SAR, 999077, P. R. China
| | - Zhanpeng Wang
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Zongxiang Xu
- Department of Chemistry, South University of Science and Technology of China, No 1088, Xueyuan Road, Xili, Nanshan District, Shenzhen, Guangdong, 518055, P. R. China
| | - Yu-Jia Zeng
- Shenzhen Key Laboratory of Laser Engineering, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Su-Ting Han
- College of Electronic Science and Technology, Shenzhen University, Shenzhen, 518060, P. R. China
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129
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Ma H, Wang W, Xu H, Wang Z, Tao Y, Chen P, Liu W, Zhang X, Ma J, Liu Y. Interface State-Induced Negative Differential Resistance Observed in Hybrid Perovskite Resistive Switching Memory. ACS APPLIED MATERIALS & INTERFACES 2018; 10:21755-21763. [PMID: 29873232 DOI: 10.1021/acsami.8b07850] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Hybrid organic-inorganic perovskite, well-known as light-absorbing materials in solar cells, have recently attracted considerable interest for applications in resistive switching (RS) memory. A better understanding of the role of interface state in hybrid perovskite materials on RS behavior is essential for the development of practical devices. Here, we study the influence of interface state on the RS behavior of an Au/CH3NH3PbI3/FTO memory device using a simple air exposure method. We observe a transition of RS hysteresis behavior with exposure time. Initially no hysteresis is apparent, but air exposure induces bipolar RS and a negative differential resistance (NDR) phenomenon. The reductions of I/Pb atomic ratio and work function on the film surface are examined using XPS spectra and Kelvin probe technique, verifying the produce of donor-type interface states (e.g., iodine vacancies) during CH3NH3PbI3 film degradation. Studies on complex impedance spectroscopy confirm the responsibility of interface states in NDR behavior. Eventually, the trapping/detrapping of electrons in bulk defects and at interface states accounts for the bipolar RS behavior accompanied with the NDR effect.
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Affiliation(s)
- Hanlu Ma
- Key Laboratory for UV Light-Emitting Materials and Technology, Ministry of Education , Northeast Normal University , 5268 Renmin Street , Changchun 130024 , China
| | - Wei Wang
- Key Laboratory for UV Light-Emitting Materials and Technology, Ministry of Education , Northeast Normal University , 5268 Renmin Street , Changchun 130024 , China
| | - Haiyang Xu
- Key Laboratory for UV Light-Emitting Materials and Technology, Ministry of Education , Northeast Normal University , 5268 Renmin Street , Changchun 130024 , China
| | - Zhongqiang Wang
- Key Laboratory for UV Light-Emitting Materials and Technology, Ministry of Education , Northeast Normal University , 5268 Renmin Street , Changchun 130024 , China
| | - Ye Tao
- Key Laboratory for UV Light-Emitting Materials and Technology, Ministry of Education , Northeast Normal University , 5268 Renmin Street , Changchun 130024 , China
| | - Peng Chen
- Key Laboratory for UV Light-Emitting Materials and Technology, Ministry of Education , Northeast Normal University , 5268 Renmin Street , Changchun 130024 , China
| | - Weizhen Liu
- Key Laboratory for UV Light-Emitting Materials and Technology, Ministry of Education , Northeast Normal University , 5268 Renmin Street , Changchun 130024 , China
| | - Xintong Zhang
- Key Laboratory for UV Light-Emitting Materials and Technology, Ministry of Education , Northeast Normal University , 5268 Renmin Street , Changchun 130024 , China
| | - Jiangang Ma
- Key Laboratory for UV Light-Emitting Materials and Technology, Ministry of Education , Northeast Normal University , 5268 Renmin Street , Changchun 130024 , China
| | - Yichun Liu
- Key Laboratory for UV Light-Emitting Materials and Technology, Ministry of Education , Northeast Normal University , 5268 Renmin Street , Changchun 130024 , China
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130
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Kumar M, Kim HS, Park DY, Jeong MS, Kim J. A non-volatile "programmable" transparent multilevel ultra-violet perovskite photodetector. NANOSCALE 2018; 10:11392-11396. [PMID: 29877536 DOI: 10.1039/c8nr01959b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Due to their outstanding physical properties, perovskite materials are considered to be promising semiconductors for next-generation optoelectronics. However, these materials are often unstable under an ambient atmosphere and ultra-violet illumination. Therefore, the construction of an air-stable visible light transparent perovskite-based ultra-violet photodetector is still highly challenging. In this study, we go beyond the conventional operation of photodetectors by utilizing the undesired hysteresis loop in the typical current-voltage characteristics of perovskites and design a (C4H9NH3)2PbBr4-based high-performance visible transparent programmable ultra-violet photodetector. The photodetector shows multiple operating levels and can switch from one level to another with a short electric pulse. The photodetector exhibits a fast response time of ∼2 ms, good responsivity of ∼32 mA W-1 and detectivity of 8.5 × 108 Jones with a low working voltage of 0.5 V. Moreover, the photodetector shows long-term stability, and the optoelectronic performance is retained under ambient conditions. This breakthrough in the controlled tunable features opens a new avenue for the development of multipurpose transparent optoelectronic devices.
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Affiliation(s)
- Mohit Kumar
- Photoelectric and Energy Device Application Lab (PEDAL), Multidisciplinary Core Institute for Future Energies (MCIFE), Incheon National University, 119 Academy Rd. Yeonsu, Incheon, 22012, Republic of Korea.
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131
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Lee YM, Park J, Yu BD, Hong S, Jung MC, Nakamura M. Surface Instability of Sn-Based Hybrid Perovskite Thin Film, CH 3NH 3SnI 3: The Origin of Its Material Instability. J Phys Chem Lett 2018; 9:2293-2297. [PMID: 29667412 DOI: 10.1021/acs.jpclett.8b00494] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
To understand the instability of Sn-based perovskite, CH3NH3SnI3, photoelectron spectroscopy with synchrotron radiation and theoretical calculations, such as density functional theory and ab initio molecular dynamics, were performed. Findings from this experimental and theoretical study highlight the crucial changes of surface-chemical states, the broken chemical bondings in Sn-I, and the depletion of a CH3-NH3+ cation on the surface region. The material instability origin of Sn-based perovskite can be explained by the chemical state instability in the surface.
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Affiliation(s)
- Young Mi Lee
- Beamline Department , Pohang Accelerator Laboratory, POSTECH , Pohang 790-784 , Republic of Korea
| | - Jinwoo Park
- Graphene Research Institute and Department of Physics , Sejong University , Seoul 05006 , Republic of Korea
| | - Byung Deok Yu
- Department of Physics , University of Seoul , Seoul 02504 , Republic of Korea
| | - Suklyun Hong
- Graphene Research Institute and Department of Physics , Sejong University , Seoul 05006 , Republic of Korea
| | - Min-Cherl Jung
- Graduate School of Materials Science , Nara Institute of Science and Technology , Nara 630-0192 , Japan
| | - Masakazu Nakamura
- Graduate School of Materials Science , Nara Institute of Science and Technology , Nara 630-0192 , Japan
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132
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Kamminga ME, Fang HH, Loi MA, ten Brink GH, Blake GR, Palstra TTM, ten Elshof JE. Micropatterned 2D Hybrid Perovskite Thin Films with Enhanced Photoluminescence Lifetimes. ACS APPLIED MATERIALS & INTERFACES 2018; 10:12878-12885. [PMID: 29578335 PMCID: PMC5909174 DOI: 10.1021/acsami.8b02236] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The application of luminescent materials in display screens and devices requires micropatterned structures. In this work, we have successfully printed microstructures of a two-dimensional (2D), orange-colored organic/inorganic hybrid perovskite ((C6H5CH2NH3)2PbI4) using two different soft lithography techniques. Notably, both techniques yield microstructures with very high aspect ratios in the range of 1.5-1.8. X-ray diffraction reveals a strong preferential orientation of the crystallites along the c-axis in both patterned structures, when compared to nonpatterned, drop-casted thin films. Furthermore, (time-resolved) photoluminescence (PL) measurements reveal that the optical properties of (C6H5CH2NH3)2PbI4 are conserved upon patterning. We find that the larger grain sizes of the patterned films with respect to the nonpatterned film give rise to an enhanced PL lifetime. Thus, our results demonstrate easy and cost-effective ways to manufacture patterns of 2D organic/inorganic hybrid perovskites, while even improving their optical properties. This demonstrates the potential use of color-tunable 2D hybrids in optoelectronic devices.
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Affiliation(s)
- Machteld E. Kamminga
- Zernike
Institute for Advanced Materials, University
of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
- E-mail: (M.E.K.)
| | - Hong-Hua Fang
- Zernike
Institute for Advanced Materials, University
of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Maria Antonietta Loi
- Zernike
Institute for Advanced Materials, University
of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Gert H. ten Brink
- Zernike
Institute for Advanced Materials, University
of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Graeme R. Blake
- Zernike
Institute for Advanced Materials, University
of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Thomas T. M. Palstra
- Zernike
Institute for Advanced Materials, University
of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
- University
of Twente, Drienerlolaan
5, 7522 NB Enschede, The Netherlands
| | - Johan E. ten Elshof
- Mesa+
Institute for Nanotechnology, University
of Twente, 7500 AE Enschede, The Netherlands
- E-mail: (J.E.t.E.)
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133
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Tak YJ, Kim DJ, Kim WG, Lee JH, Kim SJ, Kim JH, Kim HJ. Boosting Visible Light Absorption of Metal-Oxide-Based Phototransistors via Heterogeneous In-Ga-Zn-O and CH 3NH 3PbI 3 Films. ACS APPLIED MATERIALS & INTERFACES 2018; 10:12854-12861. [PMID: 29578324 DOI: 10.1021/acsami.8b01427] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
To broaden the availability and application of metal-oxide (M-O)-based optoelectronic devices, we suggest heterogeneous phototransistors composed of In-Ga-Zn-O (IGZO) and methylammonium lead iodide (CH3NH3PbI3) layers, which act as the amplifier layer (channel layer) and absorption layer, respectively. These heterogeneous phototransistors showed low persistence photocurrent compared with IGZO-only phototransistors and exhibited high photoresponsivity of 61 A/W, photosensitivity of 3.48 × 106, detectivity of 9.42 × 1010 Jones, external quantum efficiency of 154% in an optimized structure, and high photoresponsivity under water exposure via the deposition of silicon dioxide as a passivation layer. On the basis of these electrical results and various analyses, we determined that CH3NH3PbI3 could be activated as a light absorption layer, current barrier, and plasma damage blocking layer, which would serve to widen the range of applications of M-O-based optoelectronic devices with high photoresponsivity and reliability under visible light illumination.
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Affiliation(s)
| | | | | | | | - Si Joon Kim
- Department of Materials Science and Engineering , The University of Texas at Dallas , 800 W. Campbell Road , Richardson , Texas 75080-3021 , United States
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134
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Cheng XF, Hou X, Zhou J, Gao BJ, He JH, Li H, Xu QF, Li NJ, Chen DY, Lu JM. Pseudohalide-Induced 2D (CH 3 NH 3 ) 2 PbI 2 (SCN) 2 Perovskite for Ternary Resistive Memory with High Performance. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1703667. [PMID: 29457377 DOI: 10.1002/smll.201703667] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 01/08/2018] [Indexed: 06/08/2023]
Abstract
Recently, organic-inorganic hybrid perovskites (OIHP) are studied in memory devices, but ternary resistive memory with three states based on OIHP is not achieved yet. In this work, ternary resistive memory based on hybrid perovskite is achieved with a high device yield (75%), much higher than most organic ternary resistive memories. The pseudohalide-induced 2D (CH3 NH3 )2 PbI2 (SCN)2 perovskite thin film is prepared by using a one-step solution method and fabricated into Al/perovskite film/indium-tin oxide (glass substrate as well as flexible polyethylene terephthalate substrate) random resistive access memory (RRAM) devices. The three states have a conductivity ratio of 1:103 :107 , long retention over 10 000 s, and good endurance properties. The electrode area variation, impedance test, and current-voltage plotting show that the two resistance switches are attributable to the charge trap filling due to the effect of unscreened defect in 2D nanosheets and the formation of conductive filaments, respectively. This work paves way for stable perovskite multilevel RRAMs in ambient atmosphere.
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Affiliation(s)
- Xue-Feng Cheng
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
| | - Xiang Hou
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
| | - Jin Zhou
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
| | - Bi-Jun Gao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
| | - Jing-Hui He
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
| | - Hua Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
| | - Qing-Feng Xu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
| | - Na-Jun Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
| | - Dong-Yun Chen
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
| | - Jian-Mei Lu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
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135
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A survey of the influence of EEDQ on efficient post-functionalization of an Anderson-type polyoxomolybdate towards construction of organic-inorganic hybrids. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.11.039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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136
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Sun Y, Lu J, Ai C, Wen D, Bai X. Enhancement of memory margins in the polymer composite of [6,6]-phenyl-C 61-butyric acid methyl ester and polystyrene. Phys Chem Chem Phys 2018; 18:30808-30814. [PMID: 27801477 DOI: 10.1039/c6cp06084f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Memory devices based on composites of polystyrene (PS) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) were investigated with bistable resistive switching behavior. Current-voltage (I-V) curves for indium-tin-oxide (ITO)/PS + PCBM/Al devices with 33 wt% PCBM showed non-volatile, rewritable, flash memory properties with a maximum ON/OFF current ratio of 1 × 104, which was 100 times larger than the ON/OFF ratio of the device with 5 wt% PCBM. For ITO/PS + PCBM/Al devices with 33 wt% PCBM, the write-read-erase-read test cycles demonstrated the bistable devices with ON and OFF states at the same voltage. The programmable ON and OFF states endured up to 104 read pulses and possessed a retention time of over 105 s, indicative of the memory stability of the device. In the OFF state, the I-V curve at lower voltages up to 0.45 V was attributed to the thermionic emission mechanism, and the I-V characteristics in the applied voltage above 0.5 V dominantly followed the space-charge-limited-current behaviors. In the ON state, the curve in the applied voltage range was related to an Ohmic mechanism.
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Affiliation(s)
- Yanmei Sun
- HLJ Province Key Laboratories of Senior-education for Electronic Engineering, Heilongjiang University, Harbin, 150080, China. and Communication and Electronics Engineering Institute, Qiqihar University, Qiqihar 161006, China
| | - Junguo Lu
- HLJ Province Key Laboratories of Senior-education for Electronic Engineering, Heilongjiang University, Harbin, 150080, China. and Communication and Electronics Engineering Institute, Qiqihar University, Qiqihar 161006, China
| | - Chunpeng Ai
- HLJ Province Key Laboratories of Senior-education for Electronic Engineering, Heilongjiang University, Harbin, 150080, China.
| | - Dianzhong Wen
- HLJ Province Key Laboratories of Senior-education for Electronic Engineering, Heilongjiang University, Harbin, 150080, China.
| | - Xuduo Bai
- School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, China.
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137
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Kim TY, Anoop G, Son YJ, Kim SH, Lee E, Jo JY. Ferroelectric-mediated filamentary resistive switching in P(VDF-TrFE)/ZnO nanocomposite films. Phys Chem Chem Phys 2018; 20:16176-16183. [PMID: 29862403 DOI: 10.1039/c8cp02024h] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organic ReRAMs based on ferroelectric P(VDF-TrFE) and ZnO NPs blends exhibiting bipolar resistive switching and a high ON/OFF ratio were realized using a low-cost solution process.
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Affiliation(s)
- Tae Yeon Kim
- School of Materials Science and Engineering
- Gwangju Institute of Science and Technology
- Gwangju 61005
- South Korea
| | - Gopinathan Anoop
- School of Materials Science and Engineering
- Gwangju Institute of Science and Technology
- Gwangju 61005
- South Korea
| | - Yeong Jun Son
- School of Materials Science and Engineering
- Gwangju Institute of Science and Technology
- Gwangju 61005
- South Korea
| | - Soo Hyeon Kim
- Graduate School of Analytical Science and Technology
- Chungnam National University
- Daejeon 34134
- South Korea
| | - Eunji Lee
- School of Materials Science and Engineering
- Gwangju Institute of Science and Technology
- Gwangju 61005
- South Korea
| | - Ji Young Jo
- School of Materials Science and Engineering
- Gwangju Institute of Science and Technology
- Gwangju 61005
- South Korea
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138
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Sun Y, Wen D, Bai X. Nonvolatile ternary resistive switching memory devices based on the polymer composites containing zinc oxide nanoparticles. Phys Chem Chem Phys 2018; 20:5771-5779. [DOI: 10.1039/c7cp07887k] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nonvolatile ternary memory devices were fabricated from the composites polymer blends containing zinc oxide (ZnO) nanoparticles.
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Affiliation(s)
- Yanmei Sun
- School of Electronic Engineering
- Heilongjiang University
- Harbin
- China
| | - Dianzhong Wen
- School of Electronic Engineering
- Heilongjiang University
- Harbin
- China
| | - Xuduo Bai
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin
- China
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139
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Ran C, Xu J, Gao W, Huang C, Dou S. Defects in metal triiodide perovskite materials towards high-performance solar cells: origin, impact, characterization, and engineering. Chem Soc Rev 2018; 47:4581-4610. [DOI: 10.1039/c7cs00868f] [Citation(s) in RCA: 320] [Impact Index Per Article: 53.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The progress of defect science in metal triiodide perovskite is critically reviewed, including the origin, impacts, characterization, and engineering.
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Affiliation(s)
- Chenxin Ran
- Shaanxi Key Lab of Information Photonic Technique
- School of Electronic and Information Engineering
- Xi’ an Jiaotong University
- Xi’an 710049
- China
| | - Jiantie Xu
- School of Environment and Energy
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control
- National Engineering Laboratory for VOCs Pollution Control Technology and Equipment
- South China University of Technology
- Guangzhou 510640
| | - Weiyin Gao
- Shaanxi Key Lab of Information Photonic Technique
- School of Electronic and Information Engineering
- Xi’ an Jiaotong University
- Xi’an 710049
- China
| | - Chunmao Huang
- School of Environment and Energy
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control
- National Engineering Laboratory for VOCs Pollution Control Technology and Equipment
- South China University of Technology
- Guangzhou 510640
| | - Shixue Dou
- Institute for Superconducting and Electronic Materials
- University of Wollongong
- Wollongong 2500
- Australia
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140
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Shan Y, Lyu Z, Guan X, Younis A, Yuan G, Wang J, Li S, Wu T. Solution-processed resistive switching memory devices based on hybrid organic–inorganic materials and composites. Phys Chem Chem Phys 2018; 20:23837-23846. [DOI: 10.1039/c8cp03945c] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We review emerging low-cost solution-processed resistive random-access memory (ReRAM) made of either hybrid nanocomposites or hybrid organo-lead halide perovskites.
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Affiliation(s)
- Yingying Shan
- School of Materials Science and Engineering
- University of New South Wales (UNSW)
- Sydney
- Australia
| | - Zhensheng Lyu
- School of Materials Science and Engineering
- University of New South Wales (UNSW)
- Sydney
- Australia
| | - Xinwei Guan
- School of Materials Science and Engineering
- University of New South Wales (UNSW)
- Sydney
- Australia
- Materials Science and Engineering
| | - Adnan Younis
- School of Materials Science and Engineering
- University of New South Wales (UNSW)
- Sydney
- Australia
| | - Guoliang Yuan
- School of Materials Science and Engineering
- Nanjing University of Science and Technology
- Nanjing
- P. R. China
| | - Junling Wang
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore
| | - Sean Li
- School of Materials Science and Engineering
- University of New South Wales (UNSW)
- Sydney
- Australia
| | - Tom Wu
- School of Materials Science and Engineering
- University of New South Wales (UNSW)
- Sydney
- Australia
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141
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Tian H, Zhao L, Wang X, Yeh YW, Yao N, Rand BP, Ren TL. Extremely Low Operating Current Resistive Memory Based on Exfoliated 2D Perovskite Single Crystals for Neuromorphic Computing. ACS NANO 2017; 11:12247-12256. [PMID: 29200259 DOI: 10.1021/acsnano.7b05726] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Extremely low energy consumption neuromorphic computing is required to achieve massively parallel information processing on par with the human brain. To achieve this goal, resistive memories based on materials with ionic transport and extremely low operating current are required. Extremely low operating current allows for low power operation by minimizing the program, erase, and read currents. However, materials currently used in resistive memories, such as defective HfOx, AlOx, TaOx, etc., cannot suppress electronic transport (i.e., leakage current) while allowing good ionic transport. Here, we show that 2D Ruddlesden-Popper phase hybrid lead bromide perovskite single crystals are promising materials for low operating current nanodevice applications because of their mixed electronic and ionic transport and ease of fabrication. Ionic transport in the exfoliated 2D perovskite layer is evident via the migration of bromide ions. Filaments with a diameter of approximately 20 nm are visualized, and resistive memories with extremely low program current down to 10 pA are achieved, a value at least 1 order of magnitude lower than conventional materials. The ionic migration and diffusion as an artificial synapse is realized in the 2D layered perovskites at the pA level, which can enable extremely low energy neuromorphic computing.
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Affiliation(s)
- He Tian
- Institute of Microelectronics and Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University , Beijing 100084, China
| | - Lianfeng Zhao
- Department of Electrical Engineering, Princeton University , Princeton, New Jersey 08544, United States
| | - Xuefeng Wang
- Institute of Microelectronics and Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University , Beijing 100084, China
| | - Yao-Wen Yeh
- Princeton Institute for Science and Technology of Materials, Princeton University , Princeton, New Jersey 08544, United States
| | - Nan Yao
- Princeton Institute for Science and Technology of Materials, Princeton University , Princeton, New Jersey 08544, United States
| | - Barry P Rand
- Department of Electrical Engineering, Princeton University , Princeton, New Jersey 08544, United States
- Andlinger Center for Energy and the Environment, Princeton University , Princeton, New Jersey 08544, United States
| | - Tian-Ling Ren
- Institute of Microelectronics and Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University , Beijing 100084, China
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142
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Lin YH, Pattanasattayavong P, Anthopoulos TD. Metal-Halide Perovskite Transistors for Printed Electronics: Challenges and Opportunities. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29. [PMID: 29024040 DOI: 10.1002/adma.201702838] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2017] [Revised: 07/31/2017] [Indexed: 05/12/2023]
Abstract
Following the unprecedented rise in photovoltaic power conversion efficiencies during the past five years, metal-halide perovskites (MHPs) have emerged as a new and highly promising class of solar-energy materials. Their extraordinary electrical and optical properties combined with the abundance of the raw materials, the simplicity of synthetic routes, and processing versatility make MHPs ideal for cost-efficient, large-volume manufacturing of a plethora of optoelectronic devices that span far beyond photovoltaics. Herein looks beyond current applications in the field of energy, to the area of large-area electronics using MHPs as the semiconductor material. A comprehensive overview of the relevant fundamental material properties of MHPs, including crystal structure, electronic states, and charge transport, is provided first. Thereafter, recent demonstrations of MHP-based thin-film transistors and their application in logic circuits, as well as bi-functional devices such as light-sensing and light-emitting transistors, are discussed. Finally, the challenges and opportunities in the area of MHPs-based electronics, with particular emphasis on manufacturing, stability, and health and environmental concerns, are highlighted.
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Affiliation(s)
- Yen-Hung Lin
- Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford, OX1 3PU, UK
| | - Pichaya Pattanasattayavong
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong, 21210, Thailand
| | - Thomas D Anthopoulos
- Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
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143
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Memory effect behavior with respect to the crystal grain size in the organic-inorganic hybrid perovskite nonvolatile resistive random access memory. Sci Rep 2017; 7:16586. [PMID: 29185484 PMCID: PMC5707385 DOI: 10.1038/s41598-017-16805-4] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 11/16/2017] [Indexed: 11/08/2022] Open
Abstract
The crystal grain size of CH3NH3PbI3 (MAPbI3) organic-inorganic hybrid perovskite (OHP) film was controllable in the range from ~60 nm to ~600 nm by non-solvents inter-diffusion controlled crystallization process in dripping crystallization method for the formation of perovskite film. The MAPbI3 OHP non-volatile resistive random access memory with ~60 nm crystal grain size exhibited >0.1 TB/in2 storage capacity, >600 cycles endurance, >104 s data retention time, ~0.7 V set, and ~-0.61 V re-set bias voltage.
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144
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Choi J, Le QV, Hong K, Moon CW, Han JS, Kwon KC, Cha PR, Kwon Y, Kim SY, Jang HW. Enhanced Endurance Organolead Halide Perovskite Resistive Switching Memories Operable under an Extremely Low Bending Radius. ACS APPLIED MATERIALS & INTERFACES 2017; 9:30764-30771. [PMID: 28825292 DOI: 10.1021/acsami.7b08197] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
It was demonstrated that organolead halide perovskites (OHPs) show a resistive switching behavior with an ultralow electric field of a few kilovolts per centimeter. However, a slow switching time and relatively short endurance remain major obstacles for the realization of the next-generation memory. Here, we report a performance-enhanced OHP resistive switching device. To fabricate topologically and electronically improved OHP thin films, we added hydroiodic acid solution (for an additive) in the precursor solution of the OHP. With drastically improved morphology such as small grain size, low peak-to-valley depth, and precise thickness, the OHP thin films showed an excellent performance as insulating layers in Ag/CH3NH3PbI3/Pt cells, with an endurance of over 103 cycles, a high on/off ratio of 106, and an operation speed of 640 μs and without electroforming. We suggest plausible resistive switching and conduction mechanisms with current-voltage characteristics measured at various temperatures and with different top electrodes and device structures. Beyond the extended endurance, highly flexible resistive switching devices with a minimum bending radius of 5 mm create opportunities for use in flexible and wearable electronic devices.
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Affiliation(s)
- Jaeho Choi
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University , Seoul 08826, Republic of Korea
| | - Quyet Van Le
- School of Chemical Engineering and Materials Science, Chung-Ang University , Seoul 06974, Republic of Korea
| | - Kootak Hong
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University , Seoul 08826, Republic of Korea
| | - Cheon Woo Moon
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University , Seoul 08826, Republic of Korea
| | - Ji Su Han
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University , Seoul 08826, Republic of Korea
| | - Ki Chang Kwon
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University , Seoul 08826, Republic of Korea
| | - Pil-Ryung Cha
- School of Advanced Materials Engineering, Kookmin University , Seoul 02707, Republic of Korea
| | - Yongwoo Kwon
- Department of Materials Science and Engineering, Hongik University , Seoul 04066, Republic of Korea
| | - Soo Young Kim
- School of Chemical Engineering and Materials Science, Chung-Ang University , Seoul 06974, Republic of Korea
| | - Ho Won Jang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University , Seoul 08826, Republic of Korea
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145
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Le QV, Kim JB, Kim SY, Lee B, Lee DR. Structural Investigation of Cesium Lead Halide Perovskites for High-Efficiency Quantum Dot Light-Emitting Diodes. J Phys Chem Lett 2017; 8:4140-4147. [PMID: 28812351 DOI: 10.1021/acs.jpclett.7b01709] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We have investigated the effect of reaction temperature of hot-injection method on the structural properties of CsPbX3 (X: Br, I, Cl) perovskite nanocrystals (NCs) using small- and wide-angle X-ray scattering. It is confirmed that the size of the NCs decreased as the reaction temperature decreased, resulting in stronger quantum confinement. The cubic-phase perovskite NCs formed despite the fact that the reaction temperatures increased from 140 to 180 °C; however, monodispersive NC cubes that are required for densely packing self-assembly film were formed only at lower temperatures. From the X-ray scattering measurements, the spin-coated film from more monodispersive perovskite nanocubes synthesized at lower temperatures resulted in more preferred orientation. This dense-packing perovskite film with preferred orientation yielded efficient light-emitting diode (LED) performance. Thus the dense-packing structure of NC assemblies formed after spin-coating should be considered for high-efficient LEDs based on perovskite quantum dots in addition to quantum confinement effect of the quantum dots.
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Affiliation(s)
- Quyet Van Le
- School of Chemical Engineering and Materials Science, Integrative Research Center for Two-Dimensional Functional Materials, Institute of Interdisciplinary Convergence Research, Chung-Ang University , Seoul 06974, Republic of Korea
| | - Jong Beom Kim
- Department of Physics, Soongsil University , Seoul 06978, Republic of Korea
| | - Soo Young Kim
- School of Chemical Engineering and Materials Science, Integrative Research Center for Two-Dimensional Functional Materials, Institute of Interdisciplinary Convergence Research, Chung-Ang University , Seoul 06974, Republic of Korea
| | - Byeongdu Lee
- X-ray Science Division, Argonne National Laboratory , 9700 South Cass Avenue, Lemont, Illinois 60439, United States
| | - Dong Ryeol Lee
- Department of Physics, Soongsil University , Seoul 06978, Republic of Korea
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146
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Hwang B, Lee JS. A Strategy to Design High-Density Nanoscale Devices utilizing Vapor Deposition of Metal Halide Perovskite Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1701048. [PMID: 28558134 DOI: 10.1002/adma.201701048] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 03/25/2017] [Indexed: 06/07/2023]
Abstract
The demand for high memory density has increased due to increasing needs of information storage, such as big data processing and the Internet of Things. Organic-inorganic perovskite materials that show nonvolatile resistive switching memory properties have potential applications as the resistive switching layer for next-generation memory devices, but, for practical applications, these materials should be utilized in high-density data-storage devices. Here, nanoscale memory devices are fabricated by sequential vapor deposition of organolead halide perovskite (OHP) CH3 NH3 PbI3 layers on wafers perforated with 250 nm via-holes. These devices have bipolar resistive switching properties, and show low-voltage operation, fast switching speed (200 ns), good endurance, and data-retention time >105 s. Moreover, the use of sequential vapor deposition is extended to deposit CH3 NH3 PbI3 as the memory element in a cross-point array structure. This method to fabricate high-density memory devices could be used for memory cells that occupy large areas, and to overcome the scaling limit of existing methods; it also presents a way to use OHPs to increase memory storage capacity.
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Affiliation(s)
- Bohee Hwang
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, Korea
| | - Jang-Sik Lee
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, Korea
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147
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Zhu X, Lee J, Lu WD. Iodine Vacancy Redistribution in Organic-Inorganic Halide Perovskite Films and Resistive Switching Effects. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1700527. [PMID: 28582597 DOI: 10.1002/adma.201700527] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 03/27/2017] [Indexed: 06/07/2023]
Abstract
Organic-inorganic halide perovskite (OHP) materials, for example, CH3 NH3 PbI3 (MAPbI3 ), have attracted significant interest for applications such as solar cells, photodectors, light-emitting diodes, and lasers. Previous studies have shown that charged defects can migrate in perovskites under an electric field and/or light illumination, potentially preventing these devices from practical applications. Understanding and control of the defect generation and movement will not only lead to more stable devices but also new device concepts. Here, it is shown that the formation/annihilation of iodine vacancies (VI 's) in MAPbI3 films, driven by electric fields and light illumination, can induce pronounced resistive switching effects. Due to a low diffusion energy barrier (≈0.17 eV), the VI 's can readily drift under an electric field, and spontaneously diffuse with a concentration gradient. It is shown that the VI diffusion process can be suppressed by controlling the affinity of the contact electrode material to I- ions, or by light illumination. An electrical-write and optical-erase memory element is further demonstrated by coupling ion migration with electric fields and light illumination. These results provide guidance toward improved stability and performance of perovskite-based optoelectronic systems, and can lead to the development of solid-state devices that couple ionics, electronics, and optics.
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Affiliation(s)
- Xiaojian Zhu
- Department of Electrical Engineering and Computer Science, The University of Michigan, Ann Arbor, MI, 48109, USA
| | - Jihang Lee
- Department of Electrical Engineering and Computer Science, The University of Michigan, Ann Arbor, MI, 48109, USA
| | - Wei D Lu
- Department of Electrical Engineering and Computer Science, The University of Michigan, Ann Arbor, MI, 48109, USA
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148
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Memristive property's effects on the I-V characteristics of perovskite solar cells. Sci Rep 2017; 7:6025. [PMID: 28729682 PMCID: PMC5519685 DOI: 10.1038/s41598-017-05508-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 06/02/2017] [Indexed: 11/18/2022] Open
Abstract
The unfavorable I–V characteristics of perovskite solar cells (PSCs), such as the I–V hysteresis phenomena, have been one major obstacle for their future practical application. However, corresponding analysis based on traditional theories have shown non-negligible flaws and failed for satisfactory explanation. To present a novel mechanism, here we utilize for the first time the memristive property of the perovskite material to analyze the I–V characteristics of PSCs. The obtained joint physical model and the deduced equation may help solving the long-existent mysteries of the I–V characteristics of PSCs. On the basis of our analysis and memristor theory, we also propose an original device optimization strategy for PSCs, which may help further increase their performance to the limit.
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149
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Tress W. Metal Halide Perovskites as Mixed Electronic-Ionic Conductors: Challenges and Opportunities-From Hysteresis to Memristivity. J Phys Chem Lett 2017. [PMID: 28641009 DOI: 10.1021/acs.jpclett.7b00975] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Metal halide perovskites are promising candidates for many classes of different optoelectronic devices. Apart from being a semiconductor, they additionally show ionic conductivity. It expresses itself in slow response times, reversible degradation, and hysteresis in the current-voltage characteristics of solar cells. This Perspective gives a condensed overview about experiments and theory on ion migration in metal halide perovskites focusing on its effects in solar cells. Apart from being a potential stability concern for photovoltaics, ion migration paired with the excellent optoelectronic properties of this material offers opportunities for novel devices such as optically controlled memristors and switchable diodes.
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Affiliation(s)
- Wolfgang Tress
- Laboratory for Photonics and Interfaces, Institute of Chemical Sciences, Engineering, École Polytechnique Fédérale de Lausanne , 1015 Lausanne, Switzerland
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150
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Yang Y, Yuan G, Yan Z, Wang Y, Lu X, Liu JM. Flexible, Semitransparent, and Inorganic Resistive Memory based on BaTi 0.95 Co 0.05 O 3 Film. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1700425. [PMID: 28449391 DOI: 10.1002/adma.201700425] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Revised: 03/28/2017] [Indexed: 06/07/2023]
Abstract
Perovskite ceramics and single crystals are commonly hard and brittle due to their small maximum elastic strain. Here, large-scale BaTi0.95 Co0.05 O3 (BTCO) film with a SrRuO3 (SRO) buffered layer on a 10 µm thick mica substrate is flexible with a small bending radius of 1.4 mm and semitransparent for visible light at wavelengths of 500-800 nm. Mica/SRO/BTCO/Au cells show bipolar resistive switching and the high/low resistance ratio is up to 50. The resistive-switching properties show no obvious changes after the 2.2 mm radius memory being written/erased for 360 000 cycles nor after the memory being bent to 3 mm radius for 10 000 times. Most importantly, the memory works properly at 25-180 °C or after being annealed at 500 °C. The flexible and transparent oxide resistive memory has good prospects for application in smart wearable devices and flexible display screens.
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Affiliation(s)
- Yuxi Yang
- School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Guoliang Yuan
- School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Zhibo Yan
- National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210093, P. R. China
| | - Yaojin Wang
- School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Xubing Lu
- Institute for Advanced Materials and Guangdong Provincial Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou, 510006, China
| | - Jun-Ming Liu
- National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210093, P. R. China
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