1
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An J, Tran VT, Xu H, Ma W, Chen X, Le TD, Du H, Sun G, Kim Y. High-Throughput Manufacturing of Multimodal Epidermal Mechanosensors with Superior Detectability Enabled by a Continuous Microcracking Strategy. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2305777. [PMID: 38032171 PMCID: PMC10811494 DOI: 10.1002/advs.202305777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 10/19/2023] [Indexed: 12/01/2023]
Abstract
Non-invasive human-machine interactions (HMIs) are expected to be promoted by epidermal tactile receptive devices that can accurately perceive human activities. In reality, however, the HMI efficiency is limited by the unsatisfactory perception capability of mechanosensors and the complicated techniques for device fabrication and integration. Herein, a paradigm is presented for high-throughput fabrication of multimodal epidermal mechanosensors based on a sequential "femtosecond laser patterning-elastomer infiltration-physical transfer" process. The resilient mechanosensor features a unique hybrid sensing layer of rigid cellular graphitic flakes (CGF)-soft elastomer. The continuous microcracking of CGF under strain enables a sharp reduction in conductive pathways, while the soft elastomer within the framework sustains mechanical robustness of the structure. As a result, the mechanosensor achieves an ultrahigh sensitivity in a broad strain range (GF of 371.4 in the first linear range of 0-50%, and maximum GF of 8922.6 in the range of 61-70%), a low detection limit (0.01%), and a fast response/recovery behavior (2.6/2.1 ms). The device also exhibits excellent sensing performances to multimodal mechanical stimuli, enabling high-fidelity monitoring of full-range human motions. As proof-of-concept demonstrations, multi-pixel mechanosensor arrays are constructed and implemented in a robot hand controlling system and a security system, providing a platform toward efficient HMIs.
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Affiliation(s)
- Jianing An
- Institute of Photonics TechnologyJinan UniversityGuangzhou510632P. R. China
| | - Van Thai Tran
- Singapore Centre for 3D PrintingNanyang Technological University50 Nanyang AvenueSingapore639798Singapore
| | - Hai Xu
- College of Materials Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing211100P. R. China
| | - Wenshuai Ma
- Institute of Photonics TechnologyJinan UniversityGuangzhou510632P. R. China
| | - Xingkuan Chen
- Department of ChemistryJinan UniversityGuangzhou510632P. R. China
| | - Truong‐Son Dinh Le
- Department of Mechanical EngineeringKorea Advanced Institute of Science and Technology (KAIST)Daejeon34141Republic of Korea
| | - Hejun Du
- Singapore Centre for 3D PrintingNanyang Technological University50 Nanyang AvenueSingapore639798Singapore
| | - Gengzhi Sun
- Institute of Advanced Materials (IAM)Nanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Young‐Jin Kim
- Department of Mechanical EngineeringKorea Advanced Institute of Science and Technology (KAIST)Daejeon34141Republic of Korea
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2
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Angela VM, Harshini D, Anjali A, Imran PM, Bhuvanesh NSP, Nagarajan S. Enhancing the Resistive Switching Behavior of WORM Memory Devices Using D-π-A Based Ester-Flanked Quinolines. Chemistry 2023; 29:e202202569. [PMID: 36394987 DOI: 10.1002/chem.202202569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 11/15/2022] [Accepted: 11/17/2022] [Indexed: 11/18/2022]
Abstract
Donor-Acceptor systems are highly appreciated in the field of organic memory devices due to their efficient charge transport within the systems. In this work, we have designed and synthesized a D-π-A system constituting ester-flanked quinolines and functionalized triarylamines (TAA) through a single-step cross-coupling reaction to fabricate memory devices via Write-Once Read-Many times (WORM) non-volatile memory. Structure-property relationships are reconnoitered for these conjugated D-π-A systems through a series of UV, fluorescence, XRD, DFT, and memory characterizations. The UV and CV data show efficient charge transfer with intramolecular charge transfer occurring at 407-417 nm and a short band gap of 2.56-2.65 eV. An enhancement in the resistive switching behavior of the memory devices is observed for the compounds with simple TAA-quinoline and tert-butylphenyl substituted TAA and fluorophenyl substituted quinoline due to balanced charge distribution in the compounds. This enhanced switching induces an on/off ratio of 103 by generating a highly ordered arrangement in the thin films. The HOMO, LUMO levels, and the ESP images together estimate a charge transfer and charge trapping as the plausible mechanism for the solution-processable WORM memory devices. The longer retention time (103 s) and lower threshold voltages (-1.21--2.12 V) of the devices makes them intriguing compounds for memory applications.
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Affiliation(s)
- Varghese M Angela
- Organic Electronics Division, Department of Chemistry, Central University of Tamil Nadu, Thiruvarur, 610 005, India
| | - Deivendran Harshini
- Organic Electronics Division, Department of Chemistry, Central University of Tamil Nadu, Thiruvarur, 610 005, India
| | - Anshika Anjali
- Organic Electronics Division, Department of Chemistry, Central University of Tamil Nadu, Thiruvarur, 610 005, India
| | | | | | - Samuthira Nagarajan
- Organic Electronics Division, Department of Chemistry, Central University of Tamil Nadu, Thiruvarur, 610 005, India
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3
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Li D, He X, Zhao L, Jia M, Li H, Zhang S, Zhang X, Chen J, Jin Q, Xu J. Ultrafast Electron Transfer Dynamics of Organic Polymer Nanoparticles with Graphene Oxide. Chemistry 2023; 29:e202300025. [PMID: 36691919 DOI: 10.1002/chem.202300025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 01/20/2023] [Accepted: 01/24/2023] [Indexed: 01/25/2023]
Abstract
We prepared organic polymer poly-3-hexylthiophene (p3ht) nanoparticles (NPs) and graphene oxide (GO)/reduced graphene oxide (RGO) composites p3ht NPs-GO/RGO by using the reprecipitation method. We demonstrated that GO/RGO could improve the ordering and planarity of p3ht chains as well as the formation of p3ht NPs, and confirmed the effects of GO/RGO on the fluorescence and carrier transport dynamics of p3ht NPs by using femtosecond fluorescence upconversion and transient absorption (TA) techniques. Ultrafast electron transfer (∼1 ps) between GO/RGO and p3ht NPs quenched the fluorescence of p3ht NPs, indicating excellent properties of p3ht NPs-GO/RGO as the charge transfer complexes. Efficient electron transfer may promote the applications of p3ht NPs-GO/RGO composites in organic polymer solar cells and photocatalysis. Moreover, RGO had stronger interfacial interactions and more matched conduction band energy levels with p3ht NPs than GO did, which implied that p3ht NPs-RGO might have greater application values than p3ht NPs-GO.
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Affiliation(s)
- Dong Li
- State Key Laboratory of Precision Spectroscopy, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, P. R. China
| | - Xiaoxiao He
- State Key Laboratory of Precision Spectroscopy, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, P. R. China
| | - Litao Zhao
- Key Laboratory of Spin Electron and Nanomaterials of, Anhui Higher Education Institutes, Suzhou University, 49 Bianhe Middle Road, Suzhou, 234000, P. R. China
| | - Menghui Jia
- State Key Laboratory of Precision Spectroscopy, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, P. R. China
| | - Haoyang Li
- State Key Laboratory of Precision Spectroscopy, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, P. R. China
| | - Sanjun Zhang
- State Key Laboratory of Precision Spectroscopy, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, P. R. China
| | - Xiaolei Zhang
- State Key Laboratory of Precision Spectroscopy, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, P. R. China
| | - Jinquan Chen
- State Key Laboratory of Precision Spectroscopy, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, P. R. China
| | - Qingyuan Jin
- State Key Laboratory of Precision Spectroscopy, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, P. R. China
| | - Jianhua Xu
- State Key Laboratory of Precision Spectroscopy, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, P. R. China
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4
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Pathiranage TSK, Ma Z, Udamulle Gedara CM, Pan X, Lee Y, Gomez ED, Biewer MC, Matyjaszewski K, Stefan MC. Improved Self-Assembly of P3HT with Pyrene-Functionalized Methacrylates. ACS OMEGA 2021; 6:27325-27334. [PMID: 34693153 PMCID: PMC8529656 DOI: 10.1021/acsomega.1c04176] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 09/08/2021] [Indexed: 06/13/2023]
Abstract
A block copolymer with discotic liquid crystalline behavior was synthesized using Grignard metathesis polymerization (GRIM) and initiators for continuous activator regeneration atom transfer radical polymerization (ICAR-ATRP). A novel discotic liquid crystalline mesogen, 6-(pyren-1-yloxy)hexyl methacrylate (PyMA), comprises a block that is attached to regioregular poly(3-hexylthiophene) (rr-P3HT) generated by GRIM and subjected to end-group modification. Due to the continuous regeneration of Cu+ in the reaction mixture in ICAR-ATRP compared to conventional methods, the synthesis was successfully performed with less catalyst. The purity and yield of the final product are increased by eliminating rigorous post-synthesis purification. Stacked pyrene units have contributed to the enhanced long-range π-π interactions and aligning of the P3HT block as observed in thin-film X-ray diffraction (XRD). Furthermore, field-effect mobilities in the order of 10-2 cm2 V-1 s-1 in bottom-gate, top-contact organic field-effect transistors (OFETs) suggest an enhancement in charge transport due to the discotic electron-rich pyrene units that help mitigate the insulating effect of the methacrylate backbone. The formation of uniform microdomains of P3HT-b-poly(PyMA) observed with tapping mode atomic force microscopy (TMAFM) on the channel regions of OFETs indicates the unique packing of the block copolymer in comparison to pristine P3HT. Thermotropic properties of the novel discotic mesogen in the presence and absence of P3HT were observed with both the poly(3-hexylthiophene)-b-poly(6-(pyren-1-yloxy)hexyl methacrylate) (P3HT-b-poly(PyMA)) block copolymer and poly(6-(pyren-1-yloxy)hexyl methacrylate) (poly(PyMA)) homopolymer using polarized optical microscopy (POM) and differential scanning calorimetry (DSC).
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Affiliation(s)
- Taniya
M. S. K. Pathiranage
- Department
of Chemistry and Biochemistry, University
of Texas at Dallas, 800 West Campbell Road, Richardson, Texas 75080, United
States
| | - Ziyuan Ma
- Department
of Chemistry and Biochemistry, University
of Texas at Dallas, 800 West Campbell Road, Richardson, Texas 75080, United
States
| | - Chinthaka M. Udamulle Gedara
- Department
of Chemistry and Biochemistry, University
of Texas at Dallas, 800 West Campbell Road, Richardson, Texas 75080, United
States
| | - Xiangcheng Pan
- Center
for Macromolecular Engineering, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Youngmin Lee
- Department
of Chemical Engineering, The New Mexico
Institute of Mining and Technology, Socorro, New Mexico 87801, United States
| | - Enrique D. Gomez
- Department
of Chemical Engineering, The New Mexico
Institute of Mining and Technology, Socorro, New Mexico 87801, United States
- Department
of Chemical Engineering, Department of Materials Science and Engineering,
and Materials Research Institute, The Pennsylvania
State University, 404 Steidle Building, University Park, Pennsylvania 16802, United States
| | - Michael C. Biewer
- Department
of Chemistry and Biochemistry, University
of Texas at Dallas, 800 West Campbell Road, Richardson, Texas 75080, United
States
| | - Krzysztof Matyjaszewski
- Center
for Macromolecular Engineering, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Mihaela C. Stefan
- Department
of Chemistry and Biochemistry, University
of Texas at Dallas, 800 West Campbell Road, Richardson, Texas 75080, United
States
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5
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Wang Z, Wang L, Wu Y, Bian L, Nagai M, Jv R, Xie L, Ling H, Li Q, Bian H, Yi M, Shi N, Liu X, Huang W. Signal Filtering Enabled by Spike Voltage-Dependent Plasticity in Metalloporphyrin-Based Memristors. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2104370. [PMID: 34510593 DOI: 10.1002/adma.202104370] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 07/25/2021] [Indexed: 06/13/2023]
Abstract
Neural systems can selectively filter and memorize spatiotemporal information, thus enabling high-efficient information processing. Emulating such an exquisite biological process in electronic devices is of fundamental importance for developing neuromorphic architectures with efficient in situ edge/parallel computing, and probabilistic inference. Here a novel multifunctional memristor is proposed and demonstrated based on metalloporphyrin/oxide hybrid heterojunction, in which the metalloporphyrin layer allows for dual electronic/ionic transport. Benefiting from the coordination-assisted ionic diffusion, the device exhibits smooth, gradual conductive transitions. It is shown that the memristive characteristics of this hybrid system can be modulated by altering the metal center for desired metal-oxygen bonding energy and oxygen ions migration dynamics. The spike voltage-dependent plasticity stemming from the local/extended movement of oxygen ions under low/high voltage is identified, which permits potentiation and depression under unipolar different positive voltages. As a proof-of-concept demonstration, memristive arrays are further built to emulate the signal filtering function of the biological visual system. This work demonstrates the ionic intelligence feature of metalloporphyrin and paves the way for implementing efficient neural-signal analysis in neuromorphic hardware.
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Affiliation(s)
- Zhiyong Wang
- Center for Molecular Systems & Organic Devices (CMSOD), Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing, 210023, China
| | - Laiyuan Wang
- Center for Molecular Systems & Organic Devices (CMSOD), Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing, 210023, China
| | - Yiming Wu
- Department of Chemistry, National University of Singapore, Singapore, 117543, Singapore
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research, Singapore, 138634, Singapore
| | - Linyi Bian
- Center for Molecular Systems & Organic Devices (CMSOD), Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing, 210023, China
| | - Masaru Nagai
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing, 211816, China
| | - Ruolin Jv
- Center for Molecular Systems & Organic Devices (CMSOD), Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing, 210023, China
| | - Linghai Xie
- Center for Molecular Systems & Organic Devices (CMSOD), Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing, 210023, China
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Haifeng Ling
- Center for Molecular Systems & Organic Devices (CMSOD), Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing, 210023, China
| | - Qi Li
- Physical Science Division, IBM Thomas J. Watson Research Center, 1101 Kitchawan Rd, Yorktown Heights, NY, 10598, USA
| | - Hongyu Bian
- Department of Chemistry, National University of Singapore, Singapore, 117543, Singapore
| | - Mingdong Yi
- Center for Molecular Systems & Organic Devices (CMSOD), Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing, 210023, China
| | - Naien Shi
- Center for Molecular Systems & Organic Devices (CMSOD), Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing, 210023, China
| | - Xiaogang Liu
- Department of Chemistry, National University of Singapore, Singapore, 117543, Singapore
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research, Singapore, 138634, Singapore
- Joint School of National University of Singapore and Tianjin, University International Campus of Tianjin University, Fuzhou, 350207, China
| | - Wei Huang
- Center for Molecular Systems & Organic Devices (CMSOD), Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing, 210023, China
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing, 211816, China
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, Xi'an, 710072, China
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6
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Patil H, Kim H, Rehman S, Kadam KD, Aziz J, Khan MF, Kim DK. Stable and Multilevel Data Storage Resistive Switching of Organic Bulk Heterojunction. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:359. [PMID: 33535529 PMCID: PMC7912748 DOI: 10.3390/nano11020359] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/22/2021] [Accepted: 01/23/2021] [Indexed: 11/16/2022]
Abstract
Organic nonvolatile memory devices have a vital role for the next generation of electrical memory units, due to their large scalability and low-cost fabrication techniques. Here, we show bipolar resistive switching based on an Ag/ZnO/P3HT-PCBM/ITO device in which P3HT-PCBM acts as an organic heterojunction with inorganic ZnO protective layer. The prepared memory device has consistent DC endurance (500 cycles), retention properties (104 s), high ON/OFF ratio (105), and environmental stability. The observation of bipolar resistive switching is attributed to creation and rupture of the Ag filament. In addition, our conductive bridge random access memory (CBRAM) device has adequate regulation of the current compliance leads to multilevel resistive switching of a high data density storage.
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Affiliation(s)
- Harshada Patil
- Department of Electrical Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, Korea; (H.P.); (H.K.); (S.R.); (K.D.K.); (J.A.)
- Department of Convergence Engineering for Intelligent Drone, Sejong University, Seoul 05006, Korea
| | - Honggyun Kim
- Department of Electrical Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, Korea; (H.P.); (H.K.); (S.R.); (K.D.K.); (J.A.)
| | - Shania Rehman
- Department of Electrical Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, Korea; (H.P.); (H.K.); (S.R.); (K.D.K.); (J.A.)
| | - Kalyani D. Kadam
- Department of Electrical Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, Korea; (H.P.); (H.K.); (S.R.); (K.D.K.); (J.A.)
- Department of Convergence Engineering for Intelligent Drone, Sejong University, Seoul 05006, Korea
| | - Jamal Aziz
- Department of Electrical Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, Korea; (H.P.); (H.K.); (S.R.); (K.D.K.); (J.A.)
- Department of Convergence Engineering for Intelligent Drone, Sejong University, Seoul 05006, Korea
| | - Muhammad Farooq Khan
- Department of Electrical Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, Korea; (H.P.); (H.K.); (S.R.); (K.D.K.); (J.A.)
| | - Deok-kee Kim
- Department of Electrical Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, Korea; (H.P.); (H.K.); (S.R.); (K.D.K.); (J.A.)
- Department of Convergence Engineering for Intelligent Drone, Sejong University, Seoul 05006, Korea
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7
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Wang X, Yin Y, Song M, Zhang H, Liu Z, Wu Y, Chen Y, Eginligil M, Zhang S, Liu J, Huang W. Solution-Processable 2D Polymer/Graphene Oxide Heterostructure for Intrinsic Low-Current Memory Device. ACS APPLIED MATERIALS & INTERFACES 2020; 12:51729-51735. [PMID: 33161720 DOI: 10.1021/acsami.0c15840] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Suppressing the operating current in resistive memory devices is an effective strategy to minimize their power consumption. Herein, we present an intrinsic low-current memory based on two-dimensional (2D) hybrid heterostructures consisting of partly reduced graphene oxide (p-rGO) and conjugated microporous polymer (CMP) with the merits of being solution-processed, large-scale, and well patterned. The device with the heterostructure of p-rGO/CMP sandwiched between highly reduced graphene oxide (h-rGO) and aluminum electrodes exhibited rewritable and nonvolatile memory behavior with an ultralow operating current (∼1 μA) and efficient power consumption (∼2.9 μW). Moreover, the on/off current ratio is over 103, and the retention time is up to 8 × 103 s, indicating the low misreading rate and high stability of data storage. So far, the value of power is about 10 times lower than those of the previous GO-based memories. The bilayer architecture provides a promising approach to construct intrinsic low-power resistive memory devices.
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Affiliation(s)
- Xiaojing Wang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Yuhang Yin
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Mengya Song
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Heshan Zhang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Zhengdong Liu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Yueyue Wu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Yuanbo Chen
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Mustafa Eginligil
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Shiming Zhang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Juqing Liu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Wei Huang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
- Shaanxi Institute of Flexible Electronics (SIFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an 710072, China
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8
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Mundinamani S. Large Area, Multilayer Graphene Films as a Flexible Electronic Material. ACS OMEGA 2020; 5:17479-17485. [PMID: 32715233 PMCID: PMC7377635 DOI: 10.1021/acsomega.0c01982] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 06/26/2020] [Indexed: 06/11/2023]
Abstract
Chemically reduced graphene oxide possesses unique properties and leads to a secure processing method for many applications. The electrical and optical properties of graphene oxide are strongly dependent on the chemical and atomic structure. In the present work, the reduction of synthesized multilayer graphene oxide sheets by both chemical and thermal methods to use them as a substrate in the field of molecular electronic device fabrication is reported. 1-Dodecanethiol molecules are used to covalently bond on the surface atoms of reduced graphene oxide to constitute molecular electronic devices. The metal-organic molecules-reduced graphene oxide-metal junctions show a significant reduction in current levels and weak diode behavior. The observations confirm the tunneling as the conduction mechanism. The sheets are low cost, highly flexible, and can be used as a substrate to build the molecular electronic junctions.
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9
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Liu S, Chen X, Liu G. Conjugated polymers for information storage and neuromorphic computing. POLYM INT 2020. [DOI: 10.1002/pi.6017] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Shuzhi Liu
- School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai China
| | - Xinhui Chen
- School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai China
| | - Gang Liu
- School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai China
- Green Catalysis Center and College of Chemistry Zhengzhou University Zhengzhou China
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10
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Li L, Zang Y, Lin S, Hu J, Han Y, Chu Q, Lei Q, Chen H. Fabrication and characterization of SiC/Ge/graphene heterojunction with Ge micro-nano structures. NANOTECHNOLOGY 2020; 31:145202. [PMID: 31891919 DOI: 10.1088/1361-6528/ab6676] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
To widen the detection wavelength range and improve the detection sensitivity of SiC-based optoelectronic devices, the SiC/Ge/graphene heterojunction was fabricated by using wet transfer of the graphene following chemical vapor deposition. The Ge films on 4H-SiC(0001) have polycrystalline structure with nano-wire (NWs) and submicron spherical island (SIs) features. Due to the distinct light trapping effect of the Ge NWs, the SiC/GeNWs/graphene heterojunction has an absorbance of more than 90% in the 500-1600 nm range, which is higher than the SiC/GeSIs/graphene heterojunction. And the SiC/GeNWs/graphene heterojunction photodetector exhibits rectification ratio up to 25 at ±2 V and stable photoresponse to the NIR light at zero voltage bias.
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Affiliation(s)
- Lianbi Li
- School of Science, Xi'an Polytechnic University, Xi'an, People's Republic of China
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11
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Molinari FN, Barragán E, Bilbao E, Patrone L, Giménez G, Medrano AV, Tolley A, Monsalve LN. An electrospun polymer composite with fullerene-multiwalled carbon nanotube exohedral complexes can act as memory device. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122380] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Lv Z, Wang Y, Chen J, Wang J, Zhou Y, Han ST. Semiconductor Quantum Dots for Memories and Neuromorphic Computing Systems. Chem Rev 2020; 120:3941-4006. [DOI: 10.1021/acs.chemrev.9b00730] [Citation(s) in RCA: 114] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ziyu Lv
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, P. R. China
| | - Yan Wang
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, P. R. China
| | - Jingrui Chen
- Institute for Advanced Study, Shenzhen University, Shenzhen 518060, P. R. China
| | - Junjie Wang
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, P. R. China
| | - Ye Zhou
- Institute for Advanced Study, Shenzhen University, Shenzhen 518060, P. R. China
| | - Su-Ting Han
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, P. R. China
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13
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Choi JY, Lee J, Jeon J, Im J, Jang J, Jin SW, Joung H, Yu HC, Nam KN, Park HJ, Kim DM, Song IH, Yang J, Cho S, Chung CM. High-performance non-volatile resistive switching memory based on a polyimide/graphene oxide nanocomposite. Polym Chem 2020. [DOI: 10.1039/d0py01281e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Chemical structure of PI-GO, schematic structure of the ITO/PI-GO/Al device and its memory characteristics.
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14
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Dinh Le TS, An J, Huang Y, Vo Q, Boonruangkan J, Tran T, Kim SW, Sun G, Kim YJ. Ultrasensitive Anti-Interference Voice Recognition by Bio-Inspired Skin-Attachable Self-Cleaning Acoustic Sensors. ACS NANO 2019; 13:13293-13303. [PMID: 31687810 DOI: 10.1021/acsnano.9b06354] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Human voice recognition systems (VRSs) are a prerequisite for voice-controlled human-machine interfaces (HMIs). In order to avoid interference from unexpected background noises, skin-attachable VRSs are proposed to directly detect physiological mechanoacoustic signals based on the vibrations of vocal cords. However, the sensitivity and response time of existing VRSs are bottlenecks for efficient HMIs. In addition, water-based contaminants in our daily lives, such as skin moisture and raindrops, normally result in performance degradation or even functional failure of VRSs. Herein, we present a skin-attachable self-cleaning ultrasensitive and ultrafast acoustic sensor based on a reduced graphene oxide/polydimethylsiloxane composite film with bioinspired microcracks and hierarchical surface textures. Benefitting from the synergetic effect of the spider-slit-organ-like multiscale jagged microcracks and the lotus-leaf-like hierarchical structures, our superhydrophobic VRS exhibits an ultrahigh sensitivity (gauge factor, GF = 8699), an ultralow detection limit (ε = 0.000 064%), an ultrafast response/recovery behavior, an excellent device durability (>10 000 cycles), and reliable detection of acoustic vibrations over the audible frequency range (20-20 000 Hz) with high signal-to-noise ratios. These superb performances endow our skin-attachable VRS with anti-interference perception of human voices with high precision even in noisy environments, which will expedite the voice-controlled HMIs.
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Affiliation(s)
- Truong-Son Dinh Le
- School of Mechanical and Aerospace Engineering , Nanyang Technological University (NTU) , 50 Nanyang Avenue , Singapore 639798 , Singapore
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering , Nanyang Technological University (NTU) , 50 Nanyang Avenue , Singapore 639798 , Singapore
| | - Jianing An
- School of Mechanical and Aerospace Engineering , Nanyang Technological University (NTU) , 50 Nanyang Avenue , Singapore 639798 , Singapore
| | - Yi Huang
- School of Mechanical and Aerospace Engineering , Nanyang Technological University (NTU) , 50 Nanyang Avenue , Singapore 639798 , Singapore
| | - Quoc Vo
- School of Mechanical and Aerospace Engineering , Nanyang Technological University (NTU) , 50 Nanyang Avenue , Singapore 639798 , Singapore
| | - Jeeranan Boonruangkan
- School of Mechanical and Aerospace Engineering , Nanyang Technological University (NTU) , 50 Nanyang Avenue , Singapore 639798 , Singapore
| | - Tuan Tran
- School of Mechanical and Aerospace Engineering , Nanyang Technological University (NTU) , 50 Nanyang Avenue , Singapore 639798 , Singapore
| | - Seung-Woo Kim
- Department of Mechanical Engineering , Korea Advanced Institute of Science and Technology (KAIST) , Science Town, Daejeon 34141 , South Korea
| | - Gengzhi Sun
- Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , People's Republic of China
- Institute of Flexible Electronics (IFE) , Northwestern Polytechnical University , 127 West Youyi Road , Xi'an 710072 , People's Republic of China
| | - Young-Jin Kim
- School of Mechanical and Aerospace Engineering , Nanyang Technological University (NTU) , 50 Nanyang Avenue , Singapore 639798 , Singapore
- Department of Mechanical Engineering , Korea Advanced Institute of Science and Technology (KAIST) , Science Town, Daejeon 34141 , South Korea
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15
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Yang K, Huang LJ, Wang YX, Du YC, Tang JG, Wang Y, Cheng MM, Zhang Y, Kipper MJ, Belfiore LA, Wickramasinghe SR. Graphene oxide/nanometal composite membranes for nanofiltration: synthesis, mass transport mechanism, and applications. NEW J CHEM 2019. [DOI: 10.1039/c8nj06045b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We reviewed the recent developments in graphene-based composite membranes and discussed their challenges in this paper.
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16
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Zhou Z, Mao H, Wang X, Sun T, Chang Q, Chen Y, Xiu F, Liu Z, Liu J, Huang W. Transient and flexible polymer memristors utilizing full-solution processed polymer nanocomposites. NANOSCALE 2018; 10:14824-14829. [PMID: 30043803 DOI: 10.1039/c8nr04041a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Building transient and flexible memristors is a promising strategy for developing emerging memory technologies. Here, a transient and flexible memristor based on a polymer nanocomposite, with a configuration of silver nanowire (AgNW)/citric acid quantum dot (CA QD)-polyvinyl pyrrolidone (PVP)/AgNW, is fabricated using a full-solution process method. The obtained device exhibits reversible resistive switching behavior and a dynamic random access memory (DRAM) storage feature, with the significant merits of a high ON/OFF ratio, low switching voltage, excellent reproducibility and desirable high flexibility, indicating outstanding memory characteristics such as low misreading, low power operation and low cost potential. Moreover, an operating mechanism of charge trapping/de-trapping of the quantum dots in the polymer matrix has been proposed. Importantly, the memristor can be disintegrated in water within 30 minutes, showing that it is a promising candidate for transient memories. This work paves a new way for potential use of this material in transient electronics, implanted electronics, data storage security and flexible electronic systems.
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Affiliation(s)
- Zhe Zhou
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China.
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17
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Yang Y, Jin P, Ding S, Chu Y, Shen Y. Organo-Solubility Carbazole-Containing Polyimides with Tunable Memory Characteristics Based on Different Dianhydride Moieties. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201800195] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yanhua Yang
- Applied Chemistry Department; School of Material Science and Engineering; Nanjing University of Aeronautics and Astronautics; Nanjing 210016 P.R. China
| | - Pan Jin
- Applied Chemistry Department; School of Material Science and Engineering; Nanjing University of Aeronautics and Astronautics; Nanjing 210016 P.R. China
| | - Shijin Ding
- State Key Laboratory of ASIC and System; School of Microelectronics; Fudan University; Shanghai 200433 P.R. China
| | - Yueying Chu
- State Key Laboratory Magnetic Resonance and Atomic Molecular Physics; Wuhan Centre for Magnetic Resonance; Wuhan Institute of Physics and Mathematics; Chinese Academy of Science; Wuhan 430071 P. R. China
| | - Yingzhong Shen
- Applied Chemistry Department; School of Material Science and Engineering; Nanjing University of Aeronautics and Astronautics; Nanjing 210016 P.R. China
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18
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Scalable production of water-dispersible reduced graphene oxide and its integration in a field effect transistor. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.01.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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19
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Lu H, Chen Y, Chang Q, Cheng S, Ding Y, Chen J, Xiu F, Wang X, Ban C, Liu Z, Liu J, Huang W. Polymer-carbon dot hybrid structure for a self-rectifying memory device by energy level offset and doping. RSC Adv 2018; 8:13917-13920. [PMID: 35539360 PMCID: PMC9079846 DOI: 10.1039/c8ra01928b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 03/31/2018] [Indexed: 11/21/2022] Open
Abstract
A strategy for self-rectifying memory diodes based on a polymer–carbon dot hybrid structure, with a configuration of rGO/PEDOT : PSS/carbon dots/MEH-PPV/Al, has been proposed. The fabricated device exhibits a rectification of 103 in the rectification model and an ON/OFF current ratio of 121 in the memory model. The rectifying behavior was attributed to an energy level offset between the electrodes and the bilayer polymers and the memory effect was induced by carrier trapping of carbon dots within the polymers. A strategy for self-rectifying memory diodes based on a polymer–carbon dot hybrid structure, with a configuration of rGO/PEDOT : PSS/carbon dots/MEH-PPV/Al, has been proposed.![]()
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Affiliation(s)
- Hang Lu
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech) 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Yingying Chen
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech) 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Qing Chang
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech) 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Shuai Cheng
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech) 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Yamei Ding
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech) 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Jie Chen
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech) 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Fei Xiu
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech) 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Xiangjing Wang
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech) 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Chaoyi Ban
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech) 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Zhengdong Liu
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech) 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Juqing Liu
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech) 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Wei Huang
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech) 30 South Puzhu Road Nanjing 211816 P. R. China
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20
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Lv W, Wang H, Jia L, Tang X, Lin C, Yuwen L, Wang L, Huang W, Chen R. Tunable Nonvolatile Memory Behaviors of PCBM-MoS 2 2D Nanocomposites through Surface Deposition Ratio Control. ACS APPLIED MATERIALS & INTERFACES 2018; 10:6552-6559. [PMID: 29377670 DOI: 10.1021/acsami.7b16878] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Efficient preparation of single-layer two-dimensional (2D) transition metal dichalcogenides, especially molybdenum disulfide (MoS2), offers readily available 2D surface in nanoscale to template various materials to form nanocomposites with van der Waals heterostructures (vdWHs), opening up a new dimension for the design of functional electronic and optoelectronic materials and devices. Here, we report the tunable memory properties of the facilely prepared [6,6]-phenyl-C61-butyric acid methyl ester (PCBM)-MoS2 nanocomposites in a conventional diode device structure, where the vdWHs dominate the electric characteristics of the devices for various memory behaviors depending on different surface deposition ratios of PCBM on MoS2 nanosheets. Both nonvolatile WORM and flash memory devices have been realized using the new developed PCBM-MoS2 2D composites. Specially, the flash characteristic devices show rewritable resistive switching with low switching voltages (∼2 V), high current on/off ratios (∼3 × 102), and superior electrical bistability (>104 s). This research, through successfully allocating massive vdWHs on the MoS2 surface for organic/inorganic 2D nanocomposites, illustrates the great potential of 2D vdWHs in rectifying the electronic properties for high-performance memory devices and paves a way for the design of promising 2D nanocomposites with electronically active vdWHs for advanced device applications.
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Affiliation(s)
- Wenzhen Lv
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing University of Posts and Telecommunications , Wenyuan Road, Nanjing 210023, P. R. China
| | - Honglei Wang
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing University of Posts and Telecommunications , Wenyuan Road, Nanjing 210023, P. R. China
| | - Linlin Jia
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing University of Posts and Telecommunications , Wenyuan Road, Nanjing 210023, P. R. China
| | - Xingxing Tang
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing University of Posts and Telecommunications , Wenyuan Road, Nanjing 210023, P. R. China
| | - Cheng Lin
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing University of Posts and Telecommunications , Wenyuan Road, Nanjing 210023, P. R. China
| | - Lihui Yuwen
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing University of Posts and Telecommunications , Wenyuan Road, Nanjing 210023, P. R. China
| | - Lianhui Wang
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing University of Posts and Telecommunications , Wenyuan Road, Nanjing 210023, P. R. China
| | - Wei Huang
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing University of Posts and Telecommunications , Wenyuan Road, Nanjing 210023, P. R. China
| | - Runfeng Chen
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing University of Posts and Telecommunications , Wenyuan Road, Nanjing 210023, P. R. China
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21
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Yang Y, Xia JC, Zheng Y, Shen Y, Gou G. Synthesis and non-volatile electrical memory characteristics of triphenylamine-based polyimides with flexibility segments. NEW J CHEM 2018. [DOI: 10.1039/c8nj04103b] [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
Two triphenylamine-based polyimides (PI(TPA-PMDA) and PI(TPA-BPDA)) containing a flexibility segments were prepared. The memory device of ITO/PI(TPA-PMDA)/Al exhibited write-once read-many-times (WORM) memory behavior, however, the memory device of PI(TPA-BPDA) demonstrated flash-type memory characteristics.
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Affiliation(s)
- Yanhua Yang
- Applied Chemistry Department
- School of Material Science and Engineering
- Nanjing University of Aeronautics and Astronautics
- Nanjing
- P. R. China
| | - Jing-Cheng Xia
- State Key Laboratory of coordination chemistry
- College of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
- P. R. China
| | - Youxuan Zheng
- State Key Laboratory of coordination chemistry
- College of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
- P. R. China
| | - Yingzhong Shen
- Applied Chemistry Department
- School of Material Science and Engineering
- Nanjing University of Aeronautics and Astronautics
- Nanjing
- P. R. China
| | - Gaozhang Gou
- Key Laboratory of Natural Pharmaceutical & Chemical Biology of Yunnan Province, College of Science, Honghe University, Mengzi
- P. R. China
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22
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Xin Y, Zhao X, Jiang X, Yang Q, Huang J, Wang S, Zheng R, Wang C, Hou Y. Bistable electrical switching and nonvolatile memory effects by doping different amounts of GO in poly(9,9-dioctylfluorene-2,7-diyl). RSC Adv 2018; 8:6878-6886. [PMID: 35540311 PMCID: PMC9078296 DOI: 10.1039/c8ra00029h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 02/02/2018] [Indexed: 11/21/2022] Open
Abstract
The device shows different conductive behavior: electric bistable nonvolatile flash memory behavior and conductor behavior.
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Affiliation(s)
- Ying Xin
- School of Chemical Engineering and Materials
- Heilongjiang University
- Harbin 150080
- P. R. China
| | - Xiaofeng Zhao
- School of Electronic Engineering
- Heilongjiang University
- Harbin 150080
- P. R. China
| | - Xiankai Jiang
- School of Chemical Engineering and Materials
- Heilongjiang University
- Harbin 150080
- P. R. China
| | - Qun Yang
- School of Chemical Engineering and Materials
- Heilongjiang University
- Harbin 150080
- P. R. China
| | - Jiahe Huang
- School of Chemical Engineering and Materials
- Heilongjiang University
- Harbin 150080
- P. R. China
| | - Shuhong Wang
- School of Chemical Engineering and Materials
- Heilongjiang University
- Harbin 150080
- P. R. China
| | - Rongrong Zheng
- School of Chemical Engineering and Materials
- Heilongjiang University
- Harbin 150080
- P. R. China
| | - Cheng Wang
- School of Chemical Engineering and Materials
- Heilongjiang University
- Harbin 150080
- P. R. China
- Key Laboratory of Functional Inorganic Material Chemistry
| | - Yanjun Hou
- School of Chemical Engineering and Materials
- Heilongjiang University
- Harbin 150080
- P. R. China
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23
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Tan C, Cao X, Wu XJ, He Q, Yang J, Zhang X, Chen J, Zhao W, Han S, Nam GH, Sindoro M, Zhang H. Recent Advances in Ultrathin Two-Dimensional Nanomaterials. Chem Rev 2017; 117:6225-6331. [PMID: 28306244 DOI: 10.1021/acs.chemrev.6b00558] [Citation(s) in RCA: 1987] [Impact Index Per Article: 283.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Since the discovery of mechanically exfoliated graphene in 2004, research on ultrathin two-dimensional (2D) nanomaterials has grown exponentially in the fields of condensed matter physics, material science, chemistry, and nanotechnology. Highlighting their compelling physical, chemical, electronic, and optical properties, as well as their various potential applications, in this Review, we summarize the state-of-art progress on the ultrathin 2D nanomaterials with a particular emphasis on their recent advances. First, we introduce the unique advances on ultrathin 2D nanomaterials, followed by the description of their composition and crystal structures. The assortments of their synthetic methods are then summarized, including insights on their advantages and limitations, alongside some recommendations on suitable characterization techniques. We also discuss in detail the utilization of these ultrathin 2D nanomaterials for wide ranges of potential applications among the electronics/optoelectronics, electrocatalysis, batteries, supercapacitors, solar cells, photocatalysis, and sensing platforms. Finally, the challenges and outlooks in this promising field are featured on the basis of its current development.
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Affiliation(s)
- Chaoliang Tan
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Xiehong Cao
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore.,College of Materials Science and Engineering, Zhejiang University of Technology , 18 Chaowang Road, Hangzhou 310014, China
| | - Xue-Jun Wu
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Qiyuan He
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Jian Yang
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Xiao Zhang
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Junze Chen
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Wei Zhao
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Shikui Han
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Gwang-Hyeon Nam
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Melinda Sindoro
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Hua Zhang
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
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24
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Zhao L, Yu X, Zhang S, He X, Li L, Jia M, Chang M, Pan H, Chen J, Wang W, Xu J. The phosphorescence and excitation-wavelength dependent fluorescence kinetics of large-scale graphene oxide nanosheets. RSC Adv 2017. [DOI: 10.1039/c7ra01115f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this study, phosphorescence emission and a strong excitation-wavelength dependent fluorescence has been found in large-scale graphene oxide (GO) nanosheets.
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Affiliation(s)
- Litao Zhao
- State Key Laboratory of Precision Spectroscopy
- East China Normal University
- Shanghai
- China
| | - Xiantong Yu
- State Key Laboratory of Precision Spectroscopy
- East China Normal University
- Shanghai
- China
| | - Sanjun Zhang
- State Key Laboratory of Precision Spectroscopy
- East China Normal University
- Shanghai
- China
| | - Xiaoxiao He
- State Key Laboratory of Precision Spectroscopy
- East China Normal University
- Shanghai
- China
| | - Lei Li
- State Key Laboratory of Precision Spectroscopy
- East China Normal University
- Shanghai
- China
| | - Menghui Jia
- State Key Laboratory of Precision Spectroscopy
- East China Normal University
- Shanghai
- China
- Shanghai Institute of Optics and Fine Mechanics
| | - Mengfang Chang
- State Key Laboratory of Precision Spectroscopy
- East China Normal University
- Shanghai
- China
| | - Haifeng Pan
- State Key Laboratory of Precision Spectroscopy
- East China Normal University
- Shanghai
- China
| | - Jinquan Chen
- State Key Laboratory of Precision Spectroscopy
- East China Normal University
- Shanghai
- China
| | - Wenjun Wang
- Shandong Key Laboratory of Optical Communication Science and Technology
- School of Physical Science & Information Technology of Liaocheng University
- China
| | - Jianhua Xu
- State Key Laboratory of Precision Spectroscopy
- East China Normal University
- Shanghai
- China
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25
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Wang Z, Cao L, Ding Y, Shi R, Wang X, Lu H, Liu Z, Xiu F, Liu J, Huang W. One-step and green synthesis of nitrogen-doped carbon quantum dots for multifunctional electronics. RSC Adv 2017. [DOI: 10.1039/c7ra03840b] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A facile one-step and green synthesis of nitrogen-doped CQDs has been developed, the N-doped CQD-based device exhibits multifunctional memory and current limiting behavior.
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26
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Pan X, Skafidas E. Resonant tunneling based graphene quantum dot memristors. NANOSCALE 2016; 8:20074-20079. [PMID: 27892583 DOI: 10.1039/c6nr07969e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this paper, we model two-terminal all graphene quantum dot (GQD) based resistor-type memory devices (memristors). The resistive switching is achieved by resonant electron tunneling. We show that parallel GQDs can be used to create multi-state memory circuits. The number of states can be optimised with additional voltage sources, whilst the noise margin for each state can be controlled by appropriately choosing the branch resistance. A three-terminal GQD device configuration is also studied. The addition of an isolated gate terminal can be used to add further or modify the states of the memory device. The proposed devices provide a promising route towards volatile memory devices utilizing only atomically thin two-dimensional graphene.
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Affiliation(s)
- Xuan Pan
- Department of Electrical and Electronic Engineering, University of Melbourne, Parkville, Victoria 3010, Australia. and Centre for Neural Engineering (CfNE), University of Melbourne, Parkville, Victoria 3010, Australia
| | - Efstratios Skafidas
- Department of Electrical and Electronic Engineering, University of Melbourne, Parkville, Victoria 3010, Australia. and Centre for Neural Engineering (CfNE), University of Melbourne, Parkville, Victoria 3010, Australia
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Cheng XF, Shi EB, Hou X, Xia SG, He JH, Xu QF, Li H, Li NJ, Chen DY, Lu JM. Upgrading Electroresistive Memory from Binary to Ternary Through Single-Atom Substitution in the Molecular Design. Chem Asian J 2016; 12:45-51. [DOI: 10.1002/asia.201601317] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 10/17/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Xue-Feng Cheng
- College of Chemistry, Chemical Engineering and Materials Science; Collaborative Innovation Center of Suzhou Nano Science and Technology Institution; Soochow University; Suzhou 215123 P. R. China
| | - Er-Bo Shi
- College of Chemistry, Chemical Engineering and Materials Science; Collaborative Innovation Center of Suzhou Nano Science and Technology Institution; 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 Institution; Soochow University; Suzhou 215123 P. R. China
| | - Shu-Gang Xia
- College of Chemistry, Chemical Engineering and Materials Science; Collaborative Innovation Center of Suzhou Nano Science and Technology Institution; 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 Institution; 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 Institution; 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 Institution; 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 Institution; 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 Institution; 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 Institution; Soochow University; Suzhou 215123 P. R. China
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28
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Zhang P, Gao C, Xu B, Qi L, Jiang C, Gao M, Xue D. Structural Phase Transition Effect on Resistive Switching Behavior of MoS2 -Polyvinylpyrrolidone Nanocomposites Films for Flexible Memory Devices. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:2077-2084. [PMID: 26938882 DOI: 10.1002/smll.201503827] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 02/01/2016] [Indexed: 06/05/2023]
Abstract
The 2H phase and 1T phase coexisting in the same molybdenum disulfide (MoS2 ) nanosheets can influence the electronic properties of the materials. The 1T phase of MoS2 is introduced into the 2H-MoS2 nanosheets by two-step hydrothermal synthetic methods. Two types of nonvolatile memory effects, namely write-once read-many times memory and rewritable memory effect, are observed in the flexible memory devices with the configuration of Al/1T@2H-MoS2 -polyvinylpyrrolidone (PVP)/indium tin oxide (ITO)/polyethylene terephthalate (PET) and Al/2H-MoS2 -PVP/ITO/PET, respectively. It is observed that structural phase transition in MoS2 nanosheets plays an important role on the resistive switching behaviors of the MoS2 -based device. It is hoped that our results can offer a general route for the preparation of various promising nanocomposites based on 2D nanosheets of layered transition metal dichalcogenides for fabricating the high performance and flexible nonvolatile memory devices through regulating the phase structure in the 2D nanosheets.
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Affiliation(s)
- Peng Zhang
- Key Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Cunxu Gao
- Key Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Benhua Xu
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Lin Qi
- Key Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Changjun Jiang
- Key Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Meizhen Gao
- Key Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Desheng Xue
- Key Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou, 730000, P. R. China
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29
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Asadian E, Shahrokhian S, Zad AI. Hierarchical core–shell structure of ZnO nanotube/MnO2 nanosheet arrays on a 3D graphene network as a high performance biosensing platform. RSC Adv 2016. [DOI: 10.1039/c6ra07197j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A hierarchical core–shell structure composed of ZnO nanotubes/MnO2 nanosheets was fabricated via a two-step electrochemical deposition procedure on the surface of a 3D graphene network (3DGN) as a free-standing monolithic electrode.
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Affiliation(s)
- Elham Asadian
- Institute for Nanoscience and Nanotechnology (INST)
- Sharif University of Technology
- Tehran
- Iran
| | - Saeed Shahrokhian
- Institute for Nanoscience and Nanotechnology (INST)
- Sharif University of Technology
- Tehran
- Iran
- Department of Chemistry
| | - Azam Iraji Zad
- Institute for Nanoscience and Nanotechnology (INST)
- Sharif University of Technology
- Tehran
- Iran
- Department of Physics
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30
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Tian H, Zhao H, Wang XF, Xie QY, Chen HY, Mohammad MA, Li C, Mi WT, Bie Z, Yeh CH, Yang Y, Wong HSP, Chiu PW, Ren TL. In Situ Tuning of Switching Window in a Gate-Controlled Bilayer Graphene-Electrode Resistive Memory Device. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:7767-7774. [PMID: 26500160 DOI: 10.1002/adma.201503125] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Revised: 09/09/2015] [Indexed: 06/05/2023]
Abstract
A resistive random access memory (RRAM) device with a tunable switching window is demonstrated for the first time. The SET voltage can be continuously tuned from 0.27 to 4.5 V by electrical gating from -10 to +35 V. The gate-controlled bilayer graphene-electrode RRAM can function as 1D1R and potentially increase the RRAM density.
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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
| | - Haiming Zhao
- Institute of Microelectronics and Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University, Beijing, 100084, China
| | - Xue-Feng Wang
- Institute of Microelectronics and Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University, Beijing, 100084, China
| | - Qian-Yi Xie
- Institute of Microelectronics and Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University, Beijing, 100084, China
| | - Hong-Yu Chen
- Department of Electrical Engineering and Stanford System X Alliance, Stanford University, Stanford, CA, 94305, USA
| | - Mohammad Ali Mohammad
- Institute of Microelectronics and Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University, Beijing, 100084, China
| | - Cheng Li
- Institute of Microelectronics and Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University, Beijing, 100084, China
| | - Wen-Tian Mi
- Institute of Microelectronics and Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University, Beijing, 100084, China
| | - Zhi Bie
- Institute of Microelectronics and Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University, Beijing, 100084, China
| | - Chao-Hui Yeh
- Department of Electrical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Yi Yang
- Institute of Microelectronics and Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University, Beijing, 100084, China
| | - H-S Philip Wong
- Department of Electrical Engineering and Stanford System X Alliance, Stanford University, Stanford, CA, 94305, USA
| | - Po-Wen Chiu
- Department of Electrical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - 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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31
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Han GS, Song YH, Jin YU, Lee JW, Park NG, Kang BK, Lee JK, Cho IS, Yoon DH, Jung HS. Reduced Graphene Oxide/Mesoporous TiO2 Nanocomposite Based Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2015; 7:23521-6. [PMID: 26445167 DOI: 10.1021/acsami.5b06171] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
We report on reduced graphene oxide (rGO)/mesoporous (mp)-TiO2 nanocomposite based mesostructured perovskite solar cells that show an improved electron transport property owing to the reduced interfacial resistance. The amount of rGO added to the TiO2 nanoparticles electron transport layer was optimized, and their impacts on film resistivity, electron diffusion, recombination time, and photovoltaic performance were investigated. The rGO/mp-TiO2 nanocomposite film reduces interfacial resistance when compared to the mp-TiO2 film, and hence, it improves charge collection efficiency. This effect significantly increases the short circuit current density and open circuit voltage. The rGO/mp-TiO2 nanocomposite film with an optimal rGO content of 0.4 vol % shows 18% higher photon conversion efficiency compared with the TiO2 nanoparticles based perovskite solar cells.
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Affiliation(s)
- Gill Sang Han
- School of Advanced Materials Science & Engineering, Sungkyunkwan University , Suwon 440-746, Republic of Korea
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh , Pittsburgh, Pennsylvania 15261, United States
| | - Young Hyun Song
- School of Advanced Materials Science & Engineering, Sungkyunkwan University , Suwon 440-746, Republic of Korea
| | - Young Un Jin
- School of Advanced Materials Science & Engineering, Sungkyunkwan University , Suwon 440-746, Republic of Korea
| | - Jin-Wook Lee
- School of Chemical Engineering and Department of Energy Science, Sungkyunkwan University , Suwon, 440-746, Korea
| | - Nam-Gyu Park
- School of Chemical Engineering and Department of Energy Science, Sungkyunkwan University , Suwon, 440-746, Korea
| | - Bong Kyun Kang
- School of Advanced Materials Science & Engineering, Sungkyunkwan University , Suwon 440-746, Republic of Korea
| | - Jung-Kun Lee
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh , Pittsburgh, Pennsylvania 15261, United States
| | - In Sun Cho
- Department of Materials Science and Engineering & Energy Systems Research, Ajou University , Suwon 443-749, Korea
| | - Dae Ho Yoon
- School of Advanced Materials Science & Engineering, Sungkyunkwan University , Suwon 440-746, Republic of Korea
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University , Suwon 440-746, Korea
| | - Hyun Suk Jung
- School of Advanced Materials Science & Engineering, Sungkyunkwan University , Suwon 440-746, Republic of Korea
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32
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Zhang B, Chen Y, Neoh KG, Kang ET. Organic Electronic Memory Devices. ELECTRICAL MEMORY MATERIALS AND DEVICES 2015. [DOI: 10.1039/9781782622505-00001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
With the rapid development of the electronics industry in recent years, information technology devices, such as personal computers, mobile phones, digital cameras and media players, have become an essential part of our daily life. From both the technological and economic points of view, the development of novel information storage materials and devices has become an emergent issue facing the electronics industry. Due to the advantages of good scalability, flexibility, low cost, ease of processing, 3D-stacking capability and high capacity for data storage, organic-based electrical memory devices have been promising alternatives or supplementary devices to conventional inorganic semiconductor-based memory technology. The basic concepts and historical development of electronic memory devices are first presented. The following section introduces the structures and switching mechanisms of organic electronic memory devices classified as transistors, capacitors and resistors. Subsequently, the progress in the field of organic-based memory materials and devices is systematically summarized and discussed. Finally, the challenges posed to the development of novel organic electronic memory devices are summarized.
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Affiliation(s)
- Bin Zhang
- Department of Chemical & Biomolecular Engineering, National University of Singapore 10 Kent Ridge 119260 Singapore
- Key Lab for Advanced Materials, Institute of Applied Chemistry, East China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Yu Chen
- Key Lab for Advanced Materials, Institute of Applied Chemistry, East China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Koon-Gee Neoh
- Department of Chemical & Biomolecular Engineering, National University of Singapore 10 Kent Ridge 119260 Singapore
| | - En-Tang Kang
- Department of Chemical & Biomolecular Engineering, National University of Singapore 10 Kent Ridge 119260 Singapore
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33
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Wu L, Wang P, Zhang C, He J, Chen D, Jun J, Xu Q, Lu J. Adjusting the Proportion of Electron-Withdrawing Groups in a Graft Functional Polymer for Multilevel Memory Performance. Chem Asian J 2015; 11:102-11. [PMID: 26395326 DOI: 10.1002/asia.201500842] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 09/16/2015] [Indexed: 11/06/2022]
Abstract
A polymer containing aldehyde active groups (PVB) was synthesized by atom transfer radical polymerization (ATRP), acting as a polymer precursor to graft a functional moiety via nucleophilic addition reaction. DHI (2-(1,5-dimethyl-hexyl)-6-hydrazino-benzo[de]isoquinoline-1,3-dione) and NPH (nitrophenyl hydrazine) groups, which contain naphthalimides that act as narrow traps and nitro groups that act as deep traps, were anchored onto the PVB at different ratios. A series of graft polymers were obtained and named PVB-DHI, PVB-DHI4 -NPH, PVB-DHI-NPH4 , and PVB-NPH. The chemical composition of the polymers was analyzed by (1) H-NMR spectroscopy and X-ray photoelectron spectroscopy (XPS). Memory devices were prepared from the polymers, and I-V characteristics were measured to determine the performance. By adjusting the ratio of different electron acceptors (DHI and NPH) to 4:1, ternary memory behavior was achieved. The relationship between memory behavior of PVB-DHIx NPHy and acceptor groups as well as their conduction mechanism were studied in detail.
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Affiliation(s)
- Linxin Wu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P.R. China
| | - Peng Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P.R. China
| | - Chunyu Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P.R. China
| | - Jinghui He
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P.R. China
| | - Dongyun Chen
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P.R. China
| | - Jiang Jun
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P.R. China
| | - Qingfeng Xu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P.R. China.
| | - Jianmei Lu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P.R. China.
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34
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Yoon Y, Samanta K, Lee H, Lee K, Tiwari AP, Lee J, Yang J, Lee H. Highly Stretchable and Conductive Silver Nanoparticle Embedded Graphene Flake Electrode Prepared by In situ Dual Reduction Reaction. Sci Rep 2015; 5:14177. [PMID: 26383845 PMCID: PMC4585658 DOI: 10.1038/srep14177] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Accepted: 08/20/2015] [Indexed: 11/12/2022] Open
Abstract
The emergence of stretchable devices that combine with conductive properties offers new exciting opportunities for wearable applications. Here, a novel, convenient and inexpensive solution process was demonstrated to prepare in situ silver (Ag) or platinum (Pt) nanoparticles (NPs)-embedded rGO hybrid materials using formic acid duality in the presence of AgNO3 or H2PtCl6 at low temperature. The reduction duality of the formic acid can convert graphene oxide (GO) to rGO and simultaneously deposit the positively charged metal ion to metal NP on rGO while the formic acid itself is converted to a CO2 evolving gas that is eco-friendly. The AgNP-embedded rGO hybrid electrode on an elastomeric substrate exhibited superior stretchable properties including a maximum conductivity of 3012 S cm-1 (at 0 % strain) and 322.8 S cm-1 (at 35 % strain). Its fabrication process using a printing method is scalable. Surprisingly, the electrode can survive even in continuous stretching cycles.
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Affiliation(s)
- Yeoheung Yoon
- Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS), Sungkyunkwan University, Suwon 440-746. Korea.,Samsung-SKKU Graphene Center (SSGC), Sungkyunkwan University, 2066 Seoburo, Jangan-Gu, Suwon, Gyeonggi-Do 440-746, Republic of Korea
| | - Khokan Samanta
- Department of Chemistry, Department of Energy Science, SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University, Suwon 440-746. Korea
| | - Hanleem Lee
- Department of Chemistry, Department of Energy Science, SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University, Suwon 440-746. Korea
| | - Keunsik Lee
- Department of Chemistry, Department of Energy Science, SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University, Suwon 440-746. Korea
| | - Anand P Tiwari
- Department of Chemistry, Department of Energy Science, SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University, Suwon 440-746. Korea
| | - JiHun Lee
- Department of Chemistry, Department of Energy Science, SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University, Suwon 440-746. Korea
| | - Junghee Yang
- Department of Chemistry, Department of Energy Science, SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University, Suwon 440-746. Korea
| | - Hyoyoung Lee
- Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS), Sungkyunkwan University, Suwon 440-746. Korea.,Department of Chemistry, Department of Energy Science, SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University, Suwon 440-746. Korea.,Samsung-SKKU Graphene Center (SSGC), Sungkyunkwan University, 2066 Seoburo, Jangan-Gu, Suwon, Gyeonggi-Do 440-746, Republic of Korea
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35
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Chang JK, Lin WH, Taur JI, Chen TH, Liao GK, Pi TW, Chen MH, Wu CI. Graphene Anodes and Cathodes: Tuning the Work Function of Graphene by Nearly 2 eV with an Aqueous Intercalation Process. ACS APPLIED MATERIALS & INTERFACES 2015; 7:17155-17161. [PMID: 26183173 DOI: 10.1021/acsami.5b03934] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
To expand the applications of graphene in optoelectronics and microelectronics, simple and effective doping processes need to be developed. In this paper, we demonstrate an aqueous process that can simultaneously transfer chemical vapor deposition grown graphene from Cu to other substrates and produce stacked graphene/dopant intercalation films with tunable work functions, which differs significantly from conventional doping methods using vacuum evaporation or spin-coating processes. The work function of graphene layers can be tuned from 3.25 to 5.10 eV, which practically covers the wide range of the anode and cathode applications. Doped graphene films in intercalation structures also exhibit excellent transparency and low resistance. The polymer-based solar cells with either low work function graphene as cathodes or high work function graphene as anodes are demonstrated.
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Affiliation(s)
- Jan-Kai Chang
- †Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei 106, Taiwan (R.O.C.)
| | - Wei-Hsiang Lin
- †Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei 106, Taiwan (R.O.C.)
| | - Jieh-I Taur
- †Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei 106, Taiwan (R.O.C.)
| | - Ting-Hao Chen
- †Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei 106, Taiwan (R.O.C.)
| | - Guo-Kai Liao
- †Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei 106, Taiwan (R.O.C.)
| | - Tun-Wen Pi
- ‡National Synchrotron Radiation Research Center, Hsinchu 307, Taiwan (R.O.C.)
| | - Mei-Hsin Chen
- §Department of Optoelectronic Engineering, National Dong Hwa University, Hualien 974, Taiwan (R.O.C.)
| | - Chih-I Wu
- †Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei 106, Taiwan (R.O.C.)
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36
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Wu JH, Liou GS. Substituent and Charge Transfer Effects on Memory Behavior of the Ambipolar Poly(triphenylamine)s. ACS APPLIED MATERIALS & INTERFACES 2015; 7:15988-15994. [PMID: 26135808 DOI: 10.1021/acsami.5b04123] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A series of poly(triphneylamine)s (CN-PTPA, 2CN-PTPA, 3CN-PTPA, and NO2-PTPA) with pendent acceptors (cyano, dicyanovinyl, tricyanovinyl, and nitro) have been readily synthesized by oxidative coupling polymerization using FeCl3 as oxidant. The tunable memory properties of the ITO/polymer/Al sandwiched memory devices including DRAM, SRAM, and WORM could be achieved by introducing substituent acceptors with different extent of electronic delocalization and electron-withdrawing intensity into the poly(triphenylamine)s. The highly fluorescent CN-PTPA exhibited volatile DRAM memory characteristic due to the large band gap and weak intramolecular charge transfer capability. 2CN-PTPA and 3CN-PTPA showed volatile SRAM memory property with retention time of 5 and 14 min, respectively, depending on electron-withdrawing capability of the acceptors. Furthermore, NO2-PTPA afforded nonvolatile WORM memory behavior attributed to the charge could be trapped into the nonconjugated nitro group even though the dipole moment and electron-withdrawing capability of nitro group were weaker than cyanovinyl groups. Moreover, except NO2-PTPA, all the devices derived from cyano-containing ambipolar polymers including CN-PTPA, 2CN-PTPA, and 3CN-PTPA could be switched to the ON state and exhibited WORM memory behavior in positive unipolar I-V switching. This phenomenon indicated that the Al atoms preferentially interact with poly(triphneylamine)s containing cyano than nitro substituents.
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Affiliation(s)
- Jia-Hao Wu
- Functional Polymeric Materials Laboratory, Institute of Polymer Science and Engineering, National Taiwan University, 1 Roosevelt Road, 4th Sec., Taipei 10617, Taiwan
| | - Guey-Sheng Liou
- Functional Polymeric Materials Laboratory, Institute of Polymer Science and Engineering, National Taiwan University, 1 Roosevelt Road, 4th Sec., Taipei 10617, Taiwan
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37
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Parak WJ, Nel AE, Weiss PS. Grand Challenges for Nanoscience and Nanotechnology. ACS NANO 2015; 9:6637-40. [PMID: 26192457 DOI: 10.1021/acsnano.5b04386] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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38
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Zhang CY, He JH, Lu CJ, Gu QF, Wu LX, Liu Q, Li H, Xu QF, Lu JM. Changing the stability of polymer-based memory devices in high conductivity state via tuning the red-ox property of Hemin. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.06.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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39
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Zhou Y, Han ST, Yan Y, Zhou L, Huang LB, Zhuang J, Sonar P, Roy VAL. Ultra-flexible nonvolatile memory based on donor-acceptor diketopyrrolopyrrole polymer blends. Sci Rep 2015; 5:10683. [PMID: 26029856 PMCID: PMC4450595 DOI: 10.1038/srep10683] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 04/17/2015] [Indexed: 11/25/2022] Open
Abstract
Flexible memory cell array based on high mobility donor-acceptor diketopyrrolopyrrole polymer has been demonstrated. The memory cell exhibits low read voltage, high cell-to-cell uniformity and good mechanical flexibility, and has reliable retention and endurance memory performance. The electrical properties of the memory devices are systematically investigated and modeled. Our results suggest that the polymer blends provide an important step towards high-density flexible nonvolatile memory devices.
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Affiliation(s)
- Ye Zhou
- Department of Physics and Materials Science City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong SAR
| | - Su-Ting Han
- Department of Physics and Materials Science City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong SAR
| | - Yan Yan
- Department of Physics and Materials Science City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong SAR
| | - Li Zhou
- Department of Physics and Materials Science City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong SAR
| | - Long-Biao Huang
- Department of Physics and Materials Science City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong SAR
| | - Jiaqing Zhuang
- Department of Physics and Materials Science City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong SAR
| | - Prashant Sonar
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology (QUT), GPO Box 2434, Brisbane, QLD 4001, Australia
| | - V. A. L. Roy
- Department of Physics and Materials Science City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong SAR
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40
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Tan C, Liu Z, Huang W, Zhang H. Non-volatile resistive memory devices based on solution-processed ultrathin two-dimensional nanomaterials. Chem Soc Rev 2015; 44:2615-28. [DOI: 10.1039/c4cs00399c] [Citation(s) in RCA: 275] [Impact Index Per Article: 30.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
This tutorial review summarizes the recent progress in the rational design and preparation of solution-processed ultrathin 2D nanomaterials for non-volatile resistive memory devices.
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Affiliation(s)
- Chaoliang Tan
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore 639798
- Singapore
| | - Zhengdong Liu
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore 639798
- Singapore
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM)
| | - Wei Huang
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM)
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- Nanjing University of Posts & Telecommunications (NUPT)
- Nanjing 210023
- China
| | - Hua Zhang
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore 639798
- Singapore
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41
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Liu Z, Lau SP, Yan F. Functionalized graphene and other two-dimensional materials for photovoltaic devices: device design and processing. Chem Soc Rev 2015; 44:5638-79. [DOI: 10.1039/c4cs00455h] [Citation(s) in RCA: 246] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
2D materials have been successfully used in various types of solar cells as transparent electrodes, interfacial and active materials.
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Affiliation(s)
- Zhike Liu
- Department of Applied Physics and Materials Research Centre
- The Hong Kong Polytechnic University
- Hong Kong
- China
| | - Shu Ping Lau
- Department of Applied Physics and Materials Research Centre
- The Hong Kong Polytechnic University
- Hong Kong
- China
| | - Feng Yan
- Department of Applied Physics and Materials Research Centre
- The Hong Kong Polytechnic University
- Hong Kong
- China
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42
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Kang BG, Jang J, Song Y, Kim MJ, Lee T, Lee JS. Facile anionic synthesis of a well-controlled thermally cross-linkable block copolymer for polymer-based resistive memory device applications. Polym Chem 2015. [DOI: 10.1039/c5py00381d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A well-defined block copolymer containing a thermally cross-linkable ethynyl group has been synthesized by living anionic polymerization for polymer-based resistive memory device applications.
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Affiliation(s)
- Beom-Goo Kang
- School of Materials Science and Engineering
- Gwangju Institute of Science and Technology (GIST)
- Gwangju 500-712
- Korea
- Department of Chemistry
| | - Jingon Jang
- Department of Physics and Astronomy
- and Institute of Applied Physics
- Seoul National University
- Seoul 151-747
- Korea
| | - Younggul Song
- Department of Physics and Astronomy
- and Institute of Applied Physics
- Seoul National University
- Seoul 151-747
- Korea
| | - Myung-Jin Kim
- School of Materials Science and Engineering
- Gwangju Institute of Science and Technology (GIST)
- Gwangju 500-712
- Korea
| | - Takhee Lee
- Department of Physics and Astronomy
- and Institute of Applied Physics
- Seoul National University
- Seoul 151-747
- Korea
| | - Jae-Suk Lee
- School of Materials Science and Engineering
- Gwangju Institute of Science and Technology (GIST)
- Gwangju 500-712
- Korea
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43
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Yen HJ, Chen CJ, Wu JH, Liou GS. High performance polymers and their PCBM hybrids for memory device application. Polym Chem 2015. [DOI: 10.1039/c5py00829h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three series of memory devices were prepared from OHTPA-based high-performance polymers and the memory behaviors can be tuned in a wide range by varying the concentration of electron-acceptor PCBM.
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Affiliation(s)
- Hung-Ju Yen
- Functional Polymeric Materials Laboratory
- Institute of Polymer Science and Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Chih-Jung Chen
- Functional Polymeric Materials Laboratory
- Institute of Polymer Science and Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Jia-Hao Wu
- Functional Polymeric Materials Laboratory
- Institute of Polymer Science and Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Guey-Sheng Liou
- Functional Polymeric Materials Laboratory
- Institute of Polymer Science and Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
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44
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Kang BG, Jang J, Song Y, Kim MJ, Lee T, Lee JS. Well-Defined Block Copolymers with Triphenylamine and Isocyanate Moieties Synthesized via Living Anionic Polymerization for Polymer-Based Resistive Memory Applications: Effect of Morphological Structures on Nonvolatile Memory Performances. Macromolecules 2014. [DOI: 10.1021/ma501995p] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Beom-Goo Kang
- School
of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 500-712, Korea
- Department
of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Jingon Jang
- Department of Physics
and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 151-747, Korea
| | - Younggul Song
- Department of Physics
and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 151-747, Korea
| | - Myung-Jin Kim
- School
of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 500-712, Korea
| | - Takhee Lee
- Department of Physics
and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 151-747, Korea
| | - Jae-Suk Lee
- School
of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 500-712, Korea
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45
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Bo R, Liu H, Zhou Q, Chen D, Xu Q, Li N, Li H, Lu J. Decreasing the Energy Consumption of Memory Devices by Enhancing the Conjugation Extent of the Terminal Electron-Donating Moieties within Molecules. Chem Asian J 2014; 10:461-7. [DOI: 10.1002/asia.201403119] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Indexed: 11/08/2022]
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46
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Neppolian B, Wang C, Ashokkumar M. Sonochemically synthesized mono and bimetallic Au-Ag reduced graphene oxide based nanocomposites with enhanced catalytic activity. ULTRASONICS SONOCHEMISTRY 2014; 21:1948-53. [PMID: 24582660 DOI: 10.1016/j.ultsonch.2014.02.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2013] [Revised: 01/28/2014] [Accepted: 02/06/2014] [Indexed: 05/27/2023]
Abstract
Graphene oxide (GO) supported Ag and Au mono-metallic and Au-Ag bimetallic catalysts were synthesized using a sonochemical method. Bimetallic catalysts containing different weight ratios of Au and Ag were loaded onto GO utilizing a low frequency horn-type ultrasonicator. High frequency ultrasonication was used to efficiently reduce Ag(I) and Au(III) ions in the presence of polyethylene glycol and 2-propanol. Transmission electron microscopy (TEM-EDX) and X-ray photoelectron spectroscopy were used to analyze the morphology, size, shape and chemical oxidation states of the prepared metallic catalysts on GO. The catalytic efficiency of the prepared catalysts were compared using 4-nitrophenol (4-NP) reduction reaction and the subsequent formation of 4-aminophenol (4-AP) that was also monitored using UV-vis spectrophotometry. The results revealed that Au-Ag-GO bimetallic catalysts showed high activity for the conversion of 4-NP to 4-AP than their monometallic counterparts. Amongst different weight ratios (1:1, 1:2 and 2:1) between Au and Ag, the 1:2 (Au:Ag) catalyst exhibited very good catalytic performance for the conversion of 4-NP to 4-AP. A total reduction of 4-NP took place within a short period of time if Au-GO was reduced first followed by Ag reduction, whereas a lower reduction rate was observed if Ag-GO was reduced first. The same trend was observed for all the ratios of bimetallic catalysts prepared by this method. The initial unfavorable reduction potential of Ag(I) is likely to be responsible for the above order. It was found that applying dual frequency ultrasonication was a highly effective way of preparing bimetallic catalysts requiring relatively low levels of added chemicals and producing bimetallic catalysts with GO with improved catalytic efficiency.
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Affiliation(s)
- Bernaurdshaw Neppolian
- SRM-Research Institute, SRM University, Kattankulathur, Chennai 603 203, India; The School of Chemistry, University of Melbourne, Parkville, Melbourne, Victoria 3010, Australia.
| | - Chang Wang
- The School of Chemistry, University of Melbourne, Parkville, Melbourne, Victoria 3010, Australia
| | - Muthupandian Ashokkumar
- The School of Chemistry, University of Melbourne, Parkville, Melbourne, Victoria 3010, Australia
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47
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Peng D, Zhang J, Qin D, Chen J, Shan D, Lu X. An electrochemical sensor based on polyelectrolyte-functionalized graphene for detection of 4-nitrophenol. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2014.09.027] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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48
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Yang Y, Liu Z, Yin Z, Du Z, Xie L, Yi M, Liu J, Huang W. Rod-coating all-solution fabrication of double functional graphene oxide films for flexible alternating current (AC)-driven light-emitting diodes. RSC Adv 2014. [DOI: 10.1039/c4ra06147k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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49
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Zhao F, Cheng H, Hu Y, Song L, Zhang Z, Jiang L, Qu L. Functionalized graphitic carbon nitride for metal-free, flexible and rewritable nonvolatile memory device via direct laser-writing. Sci Rep 2014; 4:5882. [PMID: 25073687 PMCID: PMC4115212 DOI: 10.1038/srep05882] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 07/08/2014] [Indexed: 11/09/2022] Open
Abstract
Graphitic carbon nitride nanosheet (g-C3N4-NS) has layered structure similar with graphene nanosheet and presents unusual physicochemical properties due to the s-triazine fragments. But their electronic and electrochemical applications are limited by the relatively poor conductivity. The current work provides the first example that atomically thick g-C3N4-NSs are the ideal candidate as the active insulator layer with tunable conductivity for achieving the high performance memory devices with electrical bistability. Unlike in conventional memory diodes, the g-C3N4-NSs based devices combined with graphene layer electrodes are flexible, metal-free and low cost. The functionalized g-C3N4-NSs exhibit desirable dispersibility and dielectricity which support the all-solution fabrication and high performance of the memory diodes. Moreover, the flexible memory diodes are conveniently fabricated through the fast laser writing process on graphene oxide/g-C3N4-NSs/graphene oxide thin film. The obtained devices not only have the nonvolatile electrical bistability with great retention and endurance, but also show the rewritable memory effect with a reliable ON/OFF ratio of up to 10(5), which is the highest among all the metal-free flexible memory diodes reported so far, and even higher than those of metal-containing devices.
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Affiliation(s)
- Fei Zhao
- Key Laboratory of Cluster Science, Ministry of Education, School of Chemistry, Beijing Institute of Technology, Beijing 100081, China
| | - Huhu Cheng
- Key Laboratory of Cluster Science, Ministry of Education, School of Chemistry, Beijing Institute of Technology, Beijing 100081, China
| | - Yue Hu
- Key Laboratory of Cluster Science, Ministry of Education, School of Chemistry, Beijing Institute of Technology, Beijing 100081, China
| | - Long Song
- Key Laboratory of Cluster Science, Ministry of Education, School of Chemistry, Beijing Institute of Technology, Beijing 100081, China
| | - Zhipan Zhang
- Key Laboratory of Cluster Science, Ministry of Education, School of Chemistry, Beijing Institute of Technology, Beijing 100081, China
| | - Lan Jiang
- Laser Micro-/Nano-Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Liangti Qu
- Key Laboratory of Cluster Science, Ministry of Education, School of Chemistry, Beijing Institute of Technology, Beijing 100081, China
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50
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Li J, Tang A, Li X, Cao Y, Wang M, Ning Y, Lv L, Lu Q, Lu Y, Hu Y, Hou Y, Teng F. Negative differential resistance and carrier transport of electrically bistable devices based on poly(N-vinylcarbazole)-silver sulfide composites. NANOSCALE RESEARCH LETTERS 2014; 9:128. [PMID: 24641989 PMCID: PMC3995186 DOI: 10.1186/1556-276x-9-128] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Accepted: 03/07/2014] [Indexed: 05/25/2023]
Abstract
An electrically bistable device has been fabricated based on poly(N-vinylcarbazole) (PVK)-silver sulfide (Ag2S) composite films using a simple spin-coating method. Current-voltage (I-V) characteristics of the as-fabricated devices exhibit a typical electrical bistability and negative differential resistance (NDR) effect. The NDR effect can be tuned by varying the positive charging voltage and the charging time. The maximum current ratio between the high-conducting state (ON state) and low-conducting state (OFF state) can reach up to 104. The carrier transport mechanisms in the OFF and ON states are described by using different models on the basis of the experimental result.
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Affiliation(s)
- Jiantao Li
- Key laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing JiaoTong University, Beijing 100044, China
- Institute of Optoelectronic Technology, Beijing JiaoTong University, Beijing 100044, China
| | - Aiwei Tang
- Key laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing JiaoTong University, Beijing 100044, China
- Department of Chemistry, School of Science, Beijing JiaoTong University, Beijing 100044, China
| | - Xu Li
- Key laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing JiaoTong University, Beijing 100044, China
- Institute of Optoelectronic Technology, Beijing JiaoTong University, Beijing 100044, China
| | - Yapeng Cao
- Key laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing JiaoTong University, Beijing 100044, China
- Institute of Optoelectronic Technology, Beijing JiaoTong University, Beijing 100044, China
| | - Miao Wang
- Department of Chemistry, School of Science, Beijing JiaoTong University, Beijing 100044, China
| | - Yu Ning
- Key laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing JiaoTong University, Beijing 100044, China
- Institute of Optoelectronic Technology, Beijing JiaoTong University, Beijing 100044, China
| | - Longfeng Lv
- Key laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing JiaoTong University, Beijing 100044, China
- Institute of Optoelectronic Technology, Beijing JiaoTong University, Beijing 100044, China
| | - Qipeng Lu
- Key laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing JiaoTong University, Beijing 100044, China
- Institute of Optoelectronic Technology, Beijing JiaoTong University, Beijing 100044, China
| | - Yunzhang Lu
- Key laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing JiaoTong University, Beijing 100044, China
- Institute of Optoelectronic Technology, Beijing JiaoTong University, Beijing 100044, China
| | - Yufeng Hu
- Key laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing JiaoTong University, Beijing 100044, China
- Institute of Optoelectronic Technology, Beijing JiaoTong University, Beijing 100044, China
| | - Yanbing Hou
- Key laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing JiaoTong University, Beijing 100044, China
- Institute of Optoelectronic Technology, Beijing JiaoTong University, Beijing 100044, China
| | - Feng Teng
- Key laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing JiaoTong University, Beijing 100044, China
- Institute of Optoelectronic Technology, Beijing JiaoTong University, Beijing 100044, China
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