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Niu K, Wang C, Zeng J, Wang Z, Liu Y, Wang L, Li C, Jin Y. Ion Migration in Lead-Halide Perovskites: Cation Matters. J Phys Chem Lett 2024; 15:1006-1018. [PMID: 38298156 DOI: 10.1021/acs.jpclett.3c03451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
Metal halide perovskites exhibit remarkable properties for optoelectronic applications, yet their susceptibility to ion migration poses challenges for device stability. Previous research has predominantly focused on the migration of the halide ions. However, the migration of cations, which also has a significant influence on the device performance, is largely overlooked. In this Perspective, we review the migration of cations and their impacts on perovskite materials and devices. Special attention shall be devoted to recent insights into the migration of L-site organic cations in 2D/3D perovskites. We outline inspirations and directions for further research into the cation migration of perovskites, highlighting new possibilities in advancing perovskite optoelectronics.
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Affiliation(s)
- Kai Niu
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, Key Laboratory of Excited-State Materials of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Chenyang Wang
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, Key Laboratory of Excited-State Materials of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Jiejun Zeng
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, Key Laboratory of Excited-State Materials of Zhejiang Province, School of Material Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zirui Wang
- Key Laboratory of Excited-State Materials of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Yang Liu
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, Key Laboratory of Excited-State Materials of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
- Wenzhou Key Laboratory of Novel Optoelectronic and Nano Materials, Institute of Wenzhou, Zhejiang University, Wenzhou 325006, China
| | - Linjun Wang
- Key Laboratory of Excited-State Materials of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Cheng Li
- School of Electronic Science and Engineering, Xiamen University, Xiamen 361005, P. R. China
- Future Display Institute of Xiamen, Xiamen 361005, P. R. China
| | - Yizheng Jin
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, Key Laboratory of Excited-State Materials of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
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2
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Wang H, Yin Y, Xu J, Li J, Bao Y, An M, Tang L, Jin S, Tian W, Yang Y. Field-Induced Transport Anisotropy in Single-Crystalline All-Inorganic Lead-Halide Perovskite Nanowires. ACS NANO 2023. [PMID: 37975813 DOI: 10.1021/acsnano.3c06944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
The dynamic crystal lattice of halide perovskites facilitates the coupled transport of ions and electrons, offering innovative concepts in semiconductor iontronic devices that surpass solar cell applications. However, a comprehensive understanding of the intricacies of coupled ionic and electronic transport at the microscale remains ambiguous, owing to the inhomogeneity in ploy-crystalline perovskite thin films. In this work, we employed one-dimensional (1D) single-crystalline CsPbBr3 nanowires (NWs) to investigate the electric field induced ionic transport. Upon poling by an external bias, the previously uniform NW exhibits highly anisotropic ionic transport, which is identified as the origin of the giant switchable photovoltaic effect by spatially resolved scanning photocurrent microscopy. The subsequent ultrafast scanning photoluminescence (PL) microscopy measurements demonstrate significant localization of photocarriers near one terminal of the device, which is attributed to the accumulation of halogen vacancies. In addition, thanks to the enhancement of the local electric field, the poled device shows a 10-fold increase of photoresponse speed. Our findings favor the scale-down of perovskite devices to the submicrometer scale, extending their applications in self-powered iontronic and optoelectronic devices.
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Affiliation(s)
- Hengshan Wang
- School of Integrated Circuits, Dalian University of Technology, No. 321 Tuqiang Road, Dalian 116620, China
| | - Yanfeng Yin
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Jiao Xu
- School of Integrated Circuits, Dalian University of Technology, No. 321 Tuqiang Road, Dalian 116620, China
| | - Jing Li
- School of Integrated Circuits, Dalian University of Technology, No. 321 Tuqiang Road, Dalian 116620, China
- Key Laboratory of Materials Modification by Laser, Ion, and Electron Beams (Ministry of Education), School of Physics, Dalian University of Technology, No.2 Linggong Road, Dalian 116024, China
| | - Yanan Bao
- School of Integrated Circuits, Dalian University of Technology, No. 321 Tuqiang Road, Dalian 116620, China
| | - Meiqi An
- School of Integrated Circuits, Dalian University of Technology, No. 321 Tuqiang Road, Dalian 116620, China
| | - Lingzhi Tang
- School of Integrated Circuits, Dalian University of Technology, No. 321 Tuqiang Road, Dalian 116620, China
| | - Shengye Jin
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Wenming Tian
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Yiming Yang
- School of Integrated Circuits, Dalian University of Technology, No. 321 Tuqiang Road, Dalian 116620, China
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Wang H, Bao Y, Li J, Li D, An M, Tang L, Li J, Tang H, Chi Y, Xu J, Yang Y. Highly Anisotropic Polarization Induced by Electrical Poling in Single-Crystalline All-Inorganic Perovskite Nanoplates. J Phys Chem Lett 2023; 14:9943-9950. [PMID: 37903345 DOI: 10.1021/acs.jpclett.3c02394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2023]
Abstract
The coupled ionic and electronic transport in halide perovskites opens up new possibilities for semiconductor iontronic devices beyond solar cells. Nevertheless, the fundamental understanding of ionic behavior at the microscale remains vague, largely because of the inhomogeneity in polycrystalline thin films. Here, we show that the ion dynamics in single-crystalline perovskite nanoplates (NPs) are significantly different and that an external bias may induce highly anisotropic ionic transport in the NPs, thereby leading to a greatly enhanced local electric field. Using modified scanning photocurrent microscopy (SPCM), the origin of the photocurrent is pinpointed to the cathode region of the NP device, where subsequent energy dispersive spectroscopy (EDS) characterization confirms a large accumulation of halogen vacancies. In addition, the Kelvin probe force microscopy (KPFM) measurement demonstrates a strong built-in electric field within a submicron length near the cathode, which alters the local electronic structure for efficient photo carrier separation. Such field-induced ionic behavior deepens the understanding of ion dynamics in perovskites and promotes scale-down of perovskite micro- and nanoiontronic and ion-optoelectronic devices.
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Affiliation(s)
- Hengshan Wang
- School of Microelectronics, Dalian University of Technology, No. 321 Tuqiang Road, Dalian 116620, China
| | - Yanan Bao
- School of Microelectronics, Dalian University of Technology, No. 321 Tuqiang Road, Dalian 116620, China
| | - Jing Li
- School of Microelectronics, Dalian University of Technology, No. 321 Tuqiang Road, Dalian 116620, China
- Key Laboratory of Materials Modification by Laser, Ion, and Electron Beams (Ministry of Education), School of Physics, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China
| | - Dongwen Li
- Jilin Provincial Key Laboratory of Architectural Electricity & Comprehensive Energy Saving, School of Electrical Engineering and Computer, Jilin Jianzhu University, Changchun 130118, China
| | - Meiqi An
- School of Microelectronics, Dalian University of Technology, No. 321 Tuqiang Road, Dalian 116620, China
| | - Lingzhi Tang
- School of Microelectronics, Dalian University of Technology, No. 321 Tuqiang Road, Dalian 116620, China
| | - Jianliang Li
- School of Microelectronics, Dalian University of Technology, No. 321 Tuqiang Road, Dalian 116620, China
| | - Huayi Tang
- School of Microelectronics, Dalian University of Technology, No. 321 Tuqiang Road, Dalian 116620, China
| | - Yaodan Chi
- Jilin Provincial Key Laboratory of Architectural Electricity & Comprehensive Energy Saving, School of Electrical Engineering and Computer, Jilin Jianzhu University, Changchun 130118, China
| | - Jiao Xu
- School of Microelectronics, Dalian University of Technology, No. 321 Tuqiang Road, Dalian 116620, China
| | - Yiming Yang
- School of Microelectronics, Dalian University of Technology, No. 321 Tuqiang Road, Dalian 116620, China
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Huang H, Ding M, Zhang Y, Zhang S, Ling Y, Wang W, Zhang S. How organic switches grafting on TiO 2 modifies the surface potentials: theoretical insights. RSC Adv 2023; 13:15148-15156. [PMID: 37213332 PMCID: PMC10193125 DOI: 10.1039/d3ra00537b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 05/01/2023] [Indexed: 05/23/2023] Open
Abstract
Hybrid organic switch-inorganic semiconductor systems have important applications in both photo-responsive intelligent surfaces and microfluidic devices. In this context, herein, we performed first-principles calculations to investigate a series of organic switches of trans/cis-azobenzene fluoride and pristine/oxidized trimethoxysilane adsorbed on low-index anatase slabs. The trends in the surface-adsorbate interplay were examined in terms of the electronic structures and potential distributions. Consequently, it was found that the cis-azobenzene fluoride (oxidized trimethoxysilane)-terminated anatase surface attains a lower ionization potential than the trans-azobenzene fluoride (pristine trimethoxysilane)-terminated anatase surface due to its smaller induced (larger intrinsic) dipole moment, whose direction points inwards (outwards) from the substrate, which originates from the electron charge redistribution at the interface (polarity of attached hydroxyl groups). By combining the induced polar interaction analysis and the experimental measurements in the literature, we demonstrate that the ionization potential is an important predictor of the surface wetting properties of adsorbed systems. The anisotropic absorbance spectra of anatase grafted with azobenzene fluoride and trimethoxysilane are also related to the photoisomerization and oxidization process under UV irradiation, respectively.
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Affiliation(s)
- Haiming Huang
- Solid State Physics & Material Research Laboratory, School of Physics and Materials Science, Guangzhou University Guangzhou 510006 China
- Research Center for Advanced Information Materials (CAIM), Huangpu Research and Graduate School of Guangzhou University Guangzhou 510555 China
| | - Mingquan Ding
- Solid State Physics & Material Research Laboratory, School of Physics and Materials Science, Guangzhou University Guangzhou 510006 China
- Research Center for Advanced Information Materials (CAIM), Huangpu Research and Graduate School of Guangzhou University Guangzhou 510555 China
| | - Yu Zhang
- Solid State Physics & Material Research Laboratory, School of Physics and Materials Science, Guangzhou University Guangzhou 510006 China
- Research Center for Advanced Information Materials (CAIM), Huangpu Research and Graduate School of Guangzhou University Guangzhou 510555 China
| | - Shuai Zhang
- Solid State Physics & Material Research Laboratory, School of Physics and Materials Science, Guangzhou University Guangzhou 510006 China
- Research Center for Advanced Information Materials (CAIM), Huangpu Research and Graduate School of Guangzhou University Guangzhou 510555 China
| | - Yiyun Ling
- Solid State Physics & Material Research Laboratory, School of Physics and Materials Science, Guangzhou University Guangzhou 510006 China
| | - Weiliang Wang
- School of Physics, Guangdong Province Key Laboratory of Display Material and Technology, Sun Yat-sen University Guangzhou 510275 China
| | - Shaolin Zhang
- Solid State Physics & Material Research Laboratory, School of Physics and Materials Science, Guangzhou University Guangzhou 510006 China
- Research Center for Advanced Information Materials (CAIM), Huangpu Research and Graduate School of Guangzhou University Guangzhou 510555 China
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Lu J, Wang H, Fan T, Ma D, Wang C, Wu S, Li X. Back Interface Passivation for Efficient Low-Bandgap Perovskite Solar Cells and Photodetectors. NANOMATERIALS 2022; 12:nano12122065. [PMID: 35745403 PMCID: PMC9231224 DOI: 10.3390/nano12122065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/10/2022] [Accepted: 06/13/2022] [Indexed: 11/16/2022]
Abstract
Low-bandgap (Eg~1.25 eV) mixed tin-lead (Sn-Pb) perovskites are promising candidates for efficient solar cells and self-powered photodetectors; however, they suffer from huge amounts of defects due to the unintentional p-type self-doping. In this work, the synergistic effects of maltol and phenyl-C61-butyric acid methyl ester (PCBM) were achieved to improve the performance of low-bandgap perovskite solar cells (PSCs) and unbiased perovskite photodetectors (PPDs) by passivating the defects and tuning charge transfer dynamics. Maltol eliminated the Sn-related traps in perovskite films through a strong metal chelating effect, whereas PCBM elevated the built-in electric potential and thus improved voltage through the spike energy alignment. Combining both advantages of maltol and PCBM, high-quality perovskite films were obtained, enabling low-bandgap PSCs with the best efficiency of 20.62%. Moreover, the optimized PSCs were further applied as self-powered PPDs in a visible light communication system with a response time of 0.736 μs, presenting a satisfactory audio transmission capability.
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Affiliation(s)
- Jiayu Lu
- Collaborative Innovation Center of Suzhou Nano Science and Technology, Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province & Key Lab of Modern Optical Technologies of Education Ministry of China, School of Optoelectronic Science and Engineering, Soochow University, Suzhou 215006, China; (J.L.); (H.W.); (T.F.); (X.L.)
| | - Huayang Wang
- Collaborative Innovation Center of Suzhou Nano Science and Technology, Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province & Key Lab of Modern Optical Technologies of Education Ministry of China, School of Optoelectronic Science and Engineering, Soochow University, Suzhou 215006, China; (J.L.); (H.W.); (T.F.); (X.L.)
| | - Tingbing Fan
- Collaborative Innovation Center of Suzhou Nano Science and Technology, Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province & Key Lab of Modern Optical Technologies of Education Ministry of China, School of Optoelectronic Science and Engineering, Soochow University, Suzhou 215006, China; (J.L.); (H.W.); (T.F.); (X.L.)
| | - Dong Ma
- School of Rail Transportation, Soochow University, Suzhou 215137, China
- Correspondence: (D.M.); (C.W.); (S.W.)
| | - Changlei Wang
- Collaborative Innovation Center of Suzhou Nano Science and Technology, Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province & Key Lab of Modern Optical Technologies of Education Ministry of China, School of Optoelectronic Science and Engineering, Soochow University, Suzhou 215006, China; (J.L.); (H.W.); (T.F.); (X.L.)
- Correspondence: (D.M.); (C.W.); (S.W.)
| | - Shaolong Wu
- Collaborative Innovation Center of Suzhou Nano Science and Technology, Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province & Key Lab of Modern Optical Technologies of Education Ministry of China, School of Optoelectronic Science and Engineering, Soochow University, Suzhou 215006, China; (J.L.); (H.W.); (T.F.); (X.L.)
- Correspondence: (D.M.); (C.W.); (S.W.)
| | - Xiaofeng Li
- Collaborative Innovation Center of Suzhou Nano Science and Technology, Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province & Key Lab of Modern Optical Technologies of Education Ministry of China, School of Optoelectronic Science and Engineering, Soochow University, Suzhou 215006, China; (J.L.); (H.W.); (T.F.); (X.L.)
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6
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Repair Strategies for Perovskite Solar Cells. Chem Res Chin Univ 2021. [DOI: 10.1007/s40242-021-1334-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Dong S, Zhang C, Zhou Y, Miao X, Zong T, Gu M, Zhan Z, Chen D, Ma H, Gui W, Liu J, Cheng C, Cheng C. High-Stability Hybrid Organic-Inorganic Perovskite (CH 3NH 3PbBr 3) in SiO 2 Mesopores: Nonlinear Optics and Applications for Q-Switching Laser Operation. NANOMATERIALS 2021; 11:nano11071648. [PMID: 34201580 PMCID: PMC8306186 DOI: 10.3390/nano11071648] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 06/15/2021] [Accepted: 06/17/2021] [Indexed: 01/11/2023]
Abstract
Hybrid organic-inorganic perovskite shows a great potential in the field of photoelectrics. Embedding methyl ammonium lead bromide (MAPbBr3) in a mesoporous silica (mSiO2) layer is an effective method for maintaining optical performance of MAPbBr3 at room temperature. In this work, we synthesized MAPbBr3 quantum dots, embedding them in the mSiO2 layer. The nonlinear optical responses of this composite thin film have been investigated by using the Z-scan technique at a wavelength of 800 nm. The results show plural nonlinear responses in different intensities, corresponding to one- and two-photon processing. Our results support that composites possess saturation intensity of ~27.29 GW/cm2 and varying nonlinear coefficients. The composite thin films show high stability under ultrafast laser irradiating. By employing the composite as a saturable absorber, a passively Q-switching laser has been achieved on a Nd:YVO4 all-solid-state laser platform to generate a laser at ~1 μm.
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Affiliation(s)
- Siyu Dong
- College of Physics and Electronics, Shandong Normal University, Jinan 250014, China; (S.D.); (C.Z.); (Y.Z.); (X.M.); (T.Z.); (M.G.); (Z.Z.); (H.M.); (W.G.); (C.C.)
| | - Cheng Zhang
- College of Physics and Electronics, Shandong Normal University, Jinan 250014, China; (S.D.); (C.Z.); (Y.Z.); (X.M.); (T.Z.); (M.G.); (Z.Z.); (H.M.); (W.G.); (C.C.)
| | - Yuxiang Zhou
- College of Physics and Electronics, Shandong Normal University, Jinan 250014, China; (S.D.); (C.Z.); (Y.Z.); (X.M.); (T.Z.); (M.G.); (Z.Z.); (H.M.); (W.G.); (C.C.)
| | - Xiaona Miao
- College of Physics and Electronics, Shandong Normal University, Jinan 250014, China; (S.D.); (C.Z.); (Y.Z.); (X.M.); (T.Z.); (M.G.); (Z.Z.); (H.M.); (W.G.); (C.C.)
| | - Tiantian Zong
- College of Physics and Electronics, Shandong Normal University, Jinan 250014, China; (S.D.); (C.Z.); (Y.Z.); (X.M.); (T.Z.); (M.G.); (Z.Z.); (H.M.); (W.G.); (C.C.)
| | - Manna Gu
- College of Physics and Electronics, Shandong Normal University, Jinan 250014, China; (S.D.); (C.Z.); (Y.Z.); (X.M.); (T.Z.); (M.G.); (Z.Z.); (H.M.); (W.G.); (C.C.)
| | - Zijun Zhan
- College of Physics and Electronics, Shandong Normal University, Jinan 250014, China; (S.D.); (C.Z.); (Y.Z.); (X.M.); (T.Z.); (M.G.); (Z.Z.); (H.M.); (W.G.); (C.C.)
| | - Duo Chen
- International School for Optoelectronic Engineering, Qilu University of Technology (Shandong Academy of Science), Jinan 250353, China;
| | - Hong Ma
- College of Physics and Electronics, Shandong Normal University, Jinan 250014, China; (S.D.); (C.Z.); (Y.Z.); (X.M.); (T.Z.); (M.G.); (Z.Z.); (H.M.); (W.G.); (C.C.)
| | - Weiling Gui
- College of Physics and Electronics, Shandong Normal University, Jinan 250014, China; (S.D.); (C.Z.); (Y.Z.); (X.M.); (T.Z.); (M.G.); (Z.Z.); (H.M.); (W.G.); (C.C.)
| | - Jie Liu
- College of Physics and Electronics, Shandong Normal University, Jinan 250014, China; (S.D.); (C.Z.); (Y.Z.); (X.M.); (T.Z.); (M.G.); (Z.Z.); (H.M.); (W.G.); (C.C.)
- Correspondence: (J.L.); (C.C.)
| | - Chen Cheng
- College of Physics and Electronics, Shandong Normal University, Jinan 250014, China; (S.D.); (C.Z.); (Y.Z.); (X.M.); (T.Z.); (M.G.); (Z.Z.); (H.M.); (W.G.); (C.C.)
- Correspondence: (J.L.); (C.C.)
| | - Chuanfu Cheng
- College of Physics and Electronics, Shandong Normal University, Jinan 250014, China; (S.D.); (C.Z.); (Y.Z.); (X.M.); (T.Z.); (M.G.); (Z.Z.); (H.M.); (W.G.); (C.C.)
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Qin TX, You EM, Zhang MX, Zheng P, Huang XF, Ding SY, Mao BW, Tian ZQ. Quantification of electron accumulation at grain boundaries in perovskite polycrystalline films by correlative infrared-spectroscopic nanoimaging and Kelvin probe force microscopy. LIGHT, SCIENCE & APPLICATIONS 2021; 10:84. [PMID: 33859164 PMCID: PMC8050298 DOI: 10.1038/s41377-021-00524-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 03/24/2021] [Accepted: 03/29/2021] [Indexed: 05/25/2023]
Abstract
Organic-inorganic halide perovskites are emerging materials for photovoltaic applications with certified power conversion efficiencies (PCEs) over 25%. Generally, the microstructures of the perovskite materials are critical to the performances of PCEs. However, the role of the nanometer-sized grain boundaries (GBs) that universally existing in polycrystalline perovskite films could be benign or detrimental to solar cell performance, still remains controversial. Thus, nanometer-resolved quantification of charge carrier distribution to elucidate the role of GBs is highly desirable. Here, we employ correlative infrared-spectroscopic nanoimaging by the scattering-type scanning near-field optical microscopy with 20 nm spatial resolution and Kelvin probe force microscopy to quantify the density of electrons accumulated at the GBs in perovskite polycrystalline thin films. It is found that the electron accumulations are enhanced at the GBs and the electron density is increased from 6 × 1019 cm-3 in the dark to 8 × 1019 cm-3 under 10 min illumination with 532 nm light. Our results reveal that the electron accumulations are enhanced at the GBs especially under light illumination, featuring downward band bending toward the GBs, which would assist in electron-hole separation and thus be benign to the solar cell performance. Correlative infrared-spectroscopic nanoimaging by the scattering-type scanning near-field optical microscopy and Kelvin probe force microscopy quantitatively reveal the accumulated electrons at GBs in perovskite polycrystalline thin films.
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Affiliation(s)
- Ting-Xiao Qin
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - En-Ming You
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - Mao-Xin Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - Peng Zheng
- School of Aerospace Engineering, Xiamen University, Xiamen, China
| | - Xiao-Feng Huang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - Song-Yuan Ding
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China.
| | - Bing-Wei Mao
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China.
| | - Zhong-Qun Tian
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
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9
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Zhang Q, Yu H, Pei L, Li J, Wang K, Zhang J, Wang M, Hu B. External Field-Tunable Internal Orbit-Orbit Interaction in Flexible Perovskites. J Phys Chem Lett 2020; 11:10323-10328. [PMID: 33227199 DOI: 10.1021/acs.jpclett.0c02934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In hybrid metal halide perovskites, electrons carry both orbital and spin momenta through s-p wave function hybridization. This leads to a hypothesis that the orbit-orbit interaction between excitons can occur through orbital magnetic dipoles forming short-range interaction or through orbital polarizations forming long-range interaction to influence optoelectronic properties. This Letter reports an interesting phenomenon: the orbit-orbit interaction can be electrically switched between orbital magnetic dipoles and orbital polarizations in a flexible perovskite (MAPbI3-xClx) solar cell by scanning an external voltage between forward and reverse biases (0.2 and -0.2 V). Essentially, this phenomenon presents an external mechanism for electrically controlling the internal orbit-orbit interaction in hybrid perovskites. It was further observed that this bias-switchable orbit-orbit interaction is sensitive to temperature, becoming negligible when the temperature is decreased from 300 to 250 K. This observation indicates that the mobile ions driven by an external electrical field provide an intrinsic mechanism for electrically switching the orbit-orbit interaction through polarization and spin parameters while applying an external voltage between forward and reverse biases. These results provide a comprehensive understanding of tuning the orbit-orbit interaction in flexible perovskites toward developing orbitronic actions.
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Affiliation(s)
- Qi Zhang
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing Jiaotong University, Beijing 100044, China
| | - Haomiao Yu
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing Jiaotong University, Beijing 100044, China
| | - Liying Pei
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing Jiaotong University, Beijing 100044, China
| | - Jinpeng Li
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing Jiaotong University, Beijing 100044, China
| | - Kai Wang
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing Jiaotong University, Beijing 100044, China
| | - Jia Zhang
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Miaosheng Wang
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Bin Hu
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
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10
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Kong Q, Obliger A, Lai M, Gao M, Limmer DT, Yang P. Solid-State Ionic Rectification in Perovskite Nanowire Heterostructures. NANO LETTERS 2020; 20:8151-8156. [PMID: 33052693 DOI: 10.1021/acs.nanolett.0c03204] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Halide perovskites have attracted increasing research attention with regard to their potential for optoelectronic applications. Because of its low activation energy, ion migration is implicated in the long-term stability and many unusual transport behaviors of halide perovskite devices. However, direct observation and precise control of the ionic transport in halide perovskite crystals remain challenging. Here, we have designed an axial CsPbBr3-CsPbCl3 nanowire heterostructure, in which electric-field-induced halide ion migration was clearly visualized and quantified. We demonstrated that halide ion migration is dependent on the applied electric field and exhibits ionic rectification in this solid-state system, which is due to the nonuniform distribution of the ionic vacancies in the nanowire that results from a competition between electrical screening and their creation/destruction at the electrodes' interfaces. The asymmetric heterostructure characteristics add an additional knob to control the ion movement in the design of advanced ionic circuits with halide perovskites as building blocks.
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Affiliation(s)
- Qiao Kong
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Amael Obliger
- Laboratoire des Fluides complexes et leurs Réservoirs, UMR 5150, Université de Pau et des Pays de l'Adour, E2S-UPPA/CNRS/TOTAL, Pau, France
| | - Minliang Lai
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Mengyu Gao
- Department of Materials Science and Engineering, University of California, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - David T Limmer
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Kavli Energy NanoScience Institute, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Peidong Yang
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Department of Materials Science and Engineering, University of California, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Kavli Energy NanoScience Institute, Berkeley, California 94720, United States
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11
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Chen K, Wang C, Peng Z, Qi K, Guo Z, Zhang Y, Zhang H. The chemistry of colloidal semiconductor nanocrystals: From metal-chalcogenides to emerging perovskite. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213333] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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12
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Wang Z, Yang T, Zhang Y, Ou Q, Lin H, Zhang Q, Chen H, Hoh HY, Jia B, Bao Q. Flat Lenses Based on 2D Perovskite Nanosheets. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2001388. [PMID: 32520415 DOI: 10.1002/adma.202001388] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 05/06/2020] [Indexed: 06/11/2023]
Abstract
Ultrathin flat lenses based on metasurfaces or metamaterials have shown great promise in recent years as essential components in nano-optical system, with capability of abrupt changes of light wavefronts. However, such structural designs require complex nanopatterns and a time-consuming nanofabrication process. In this regard, flat lenses are developed based on 2D perovskite nanosheets, using a cost-effective mask-free femtosecond direct laser writing system. The optical properties of the 2D perovskite are rationally adjusted through facile composition engineering as well as thickness-dependent quantum-size confinement. A diffraction theory model is derived to understand the focusing mechanism of the 2D perovskite nanosheets flat lenses. The as-fabricated lenses exploit the tunable material property variations to effectively manipulate not only the amplitude but also the phase of the incident light to focus into a 3D focal spot with a sub-wavelength resolution in the range of 0.5-0.9λ. The results pave the way toward low-cost and large-scale high-resolution imaging applications in the future.
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Affiliation(s)
- Ziyu Wang
- School of Science and Technology for Optoelectronic Information, Yantai University, Yantai, Shandong Province, 264005, P. R. China
| | - Tieshan Yang
- Centre for Translational Atomaterials, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria, 3122, Australia
| | - Yupeng Zhang
- Institute of Microscale Optoelectronics, Lab of Artificial Microstructure for Optoelectronics, Shenzhen University, Shenzhen, 518000, P. R. China
| | - Qingdong Ou
- Department of Materials Science and Engineering, ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), Monash University, Clayton, Victoria, 3800, Australia
| | - Han Lin
- Centre for Translational Atomaterials, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria, 3122, Australia
| | - Qianhui Zhang
- Department of Civil Engineering, Monash University, Clayton, Victoria, 3800, Australia
| | - Huanyang Chen
- School of Electronic Science and Engineering, Xiamen University, Xiamen, Fujian Province, 361005, P. R. China
| | - Hui Ying Hoh
- Institute of Microscale Optoelectronics, Lab of Artificial Microstructure for Optoelectronics, Shenzhen University, Shenzhen, 518000, P. R. China
| | - Baohua Jia
- Centre for Translational Atomaterials, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria, 3122, Australia
| | - Qiaoliang Bao
- Department of Materials Science and Engineering, ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), Monash University, Clayton, Victoria, 3800, Australia
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13
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Ono LK, Liu S(F, Qi Y. Verringerung schädlicher Defekte für leistungsstarke Metallhalogenid‐Perowskit‐Solarzellen. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201905521] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Luis K. Ono
- Energy Materials and Surface Sciences Unit (EMSSU)Okinawa Institute of Science and Technology Graduate University (OIST) 1919-1 Tancha Onna-son, Kunigami-gun Okinawa 904-0495 Japan
| | - Shengzhong (Frank) Liu
- Dalian National Laboratory for Clean Energy, iChEMDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road 116023 Dalian China
- Key Laboratory of Applied Surface and Colloid ChemistryMinistry of EducationShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal University Xi'an 710119 China
| | - Yabing Qi
- Energy Materials and Surface Sciences Unit (EMSSU)Okinawa Institute of Science and Technology Graduate University (OIST) 1919-1 Tancha Onna-son, Kunigami-gun Okinawa 904-0495 Japan
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14
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Ono LK, Liu S(F, Qi Y. Reducing Detrimental Defects for High-Performance Metal Halide Perovskite Solar Cells. Angew Chem Int Ed Engl 2020; 59:6676-6698. [PMID: 31369195 PMCID: PMC7187320 DOI: 10.1002/anie.201905521] [Citation(s) in RCA: 111] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Indexed: 01/06/2023]
Abstract
In several photovoltaic (PV) technologies, the presence of electronic defects within the semiconductor band gap limit the efficiency, reproducibility, as well as lifetime. Metal halide perovskites (MHPs) have drawn great attention because of their excellent photovoltaic properties that can be achieved even without a very strict film-growth control processing. Much has been done theoretically in describing the different point defects in MHPs. Herein, we discuss the experimental challenges in thoroughly characterizing the defects in MHPs such as, experimental assignment of the type of defects, defects densities, and the energy positions within the band gap induced by these defects. The second topic of this Review is passivation strategies. Based on a literature survey, the different types of defects that are important to consider and need to be minimized are examined. A complete fundamental understanding of defect nature in MHPs is needed to further improve their optoelectronic functionalities.
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Affiliation(s)
- Luis K. Ono
- Energy Materials and Surface Sciences Unit (EMSSU)Okinawa Institute of Science and Technology Graduate University (OIST)1919-1 TanchaOnna-son, Kunigami-gunOkinawa904-0495Japan
| | - Shengzhong (Frank) Liu
- Dalian National Laboratory for Clean Energy, iChEMDalian Institute of Chemical PhysicsChinese Academy of Sciences457 Zhongshan Road116023DalianChina
- Key Laboratory of Applied Surface and Colloid ChemistryMinistry of EducationShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi'an710119China
| | - Yabing Qi
- Energy Materials and Surface Sciences Unit (EMSSU)Okinawa Institute of Science and Technology Graduate University (OIST)1919-1 TanchaOnna-son, Kunigami-gunOkinawa904-0495Japan
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15
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Liu J, Chen K, Khan SA, Shabbir B, Zhang Y, Khan Q, Bao Q. Synthesis and optical applications of low dimensional metal-halide perovskites. NANOTECHNOLOGY 2020; 31:152002. [PMID: 31751979 DOI: 10.1088/1361-6528/ab5a19] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Metal halide perovskites have received substantial attention in research communities due to their outstanding efficiency achievements in the field of photovoltaics, optoelectronics and electronics, exhibiting extraordinary optical, electrical and mechanical properties. The exceptional structural tunability enables perovskite material to possess low-dimensional form at the atomic level and extends their applications into optoelectronic and photonic fields. This review discusses the recent progress of synthetic routes and fundamental optoelectronic properties of low-dimensional metal halide perovskites. In addition, the focus is to highlight the potential applications of perovskites in various devices including solar cells, light-emitting diodes, lasers, waveguides and memory devices. Finally, outlooks and the challenges that face the development of the perovskite materials in the near future are also presented.
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Affiliation(s)
- Jingying Liu
- Department of Materials Science and Engineering, ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), Monash University, Clayton, Victoria 3800, Australia
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16
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Zhou Q, Park JG, Kim T. Heterogeneous semiconductor nanowire array for sensitive broadband photodetector by crack photolithography-based micro-/nanofluidic platforms. RSC Adv 2020; 10:23712-23719. [PMID: 35517338 PMCID: PMC9054822 DOI: 10.1039/d0ra03784b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 06/14/2020] [Indexed: 11/21/2022] Open
Abstract
The in situ growth of nanowires (NWs) into nano-/microelectromechanical systems (NEMS/MEMS) by solution processing is attractive for its relative simplicity and economic value.
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Affiliation(s)
- Qitao Zhou
- Engineering Research Center of Nano-Geomaterials of the Ministry of Education
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- China
| | - Jun Gyu Park
- Department of Mechanical Engineering
- Ulsan National Institute of Science and Technology (UNIST)
- Ulsan 44919
- Republic of Korea
| | - Taesung Kim
- Department of Mechanical Engineering
- Ulsan National Institute of Science and Technology (UNIST)
- Ulsan 44919
- Republic of Korea
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17
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Band structure engineering in metal halide perovskite nanostructures for optoelectronic applications. NANO MATERIALS SCIENCE 2019. [DOI: 10.1016/j.nanoms.2019.10.004] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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18
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Stecker C, Liu K, Hieulle J, Ohmann R, Liu Z, Ono LK, Wang G, Qi Y. Surface Defect Dynamics in Organic-Inorganic Hybrid Perovskites: From Mechanism to Interfacial Properties. ACS NANO 2019; 13:12127-12136. [PMID: 31566944 DOI: 10.1021/acsnano.9b06585] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Organic-inorganic hybrid perovskites (OHPs) have garnered much attention among the photovoltaic and light-emitting diode research community due to their excellent optoelectronic properties and low-cost fabrication. Defects in perovskites have been proposed to affect device efficiency and stability and to have a potential role in enabling ion migration. In this study, the dynamic behavior and electronic properties of intrinsic defects in CH3NH3PbBr3 (MAPbBr3) were explored at the atomic scale. We use scanning tunneling microscopy to show unambiguously the occurrence of vacancy-assisted transport of individual ions as well as the existence of vacancy defect clusters at the OHP surface. We combine these observations with density functional theory (DFT) calculations to identify the mechanisms for this ion motion and show that ion transport energy barriers, as well as transport mechanisms, at the surface depend on crystal direction. DFT calculations also reveal that vacancy defect clusters can significantly modify the local work function of the perovskite surface, which is then expected to alter interfacial charge transport in a device. Our work provides a microscopic insight into the mechanism of ion migration in OHPs and also delivers the useful information for device improvement from the perspective of interface engineering.
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Affiliation(s)
- Collin Stecker
- Energy Materials and Surface Sciences Unit (EMSSU) , Okinawa Institute of Science and Technology Graduate University (OIST) , 1919-1 Tancha , Onna-son , Okinawa 904-0495 , Japan
| | - Kexi Liu
- Department of Mechanical Engineering and Materials Science , University of Pittsburgh , Pittsburgh , Pennsylvania 15261 , United States
| | - Jeremy Hieulle
- Energy Materials and Surface Sciences Unit (EMSSU) , Okinawa Institute of Science and Technology Graduate University (OIST) , 1919-1 Tancha , Onna-son , Okinawa 904-0495 , Japan
| | - Robin Ohmann
- Energy Materials and Surface Sciences Unit (EMSSU) , Okinawa Institute of Science and Technology Graduate University (OIST) , 1919-1 Tancha , Onna-son , Okinawa 904-0495 , Japan
| | - Zhenyu Liu
- Department of Mechanical Engineering and Materials Science , University of Pittsburgh , Pittsburgh , Pennsylvania 15261 , United States
| | - Luis K Ono
- Energy Materials and Surface Sciences Unit (EMSSU) , Okinawa Institute of Science and Technology Graduate University (OIST) , 1919-1 Tancha , Onna-son , Okinawa 904-0495 , Japan
| | - Guofeng Wang
- Department of Mechanical Engineering and Materials Science , University of Pittsburgh , Pittsburgh , Pennsylvania 15261 , United States
| | - Yabing Qi
- Energy Materials and Surface Sciences Unit (EMSSU) , Okinawa Institute of Science and Technology Graduate University (OIST) , 1919-1 Tancha , Onna-son , Okinawa 904-0495 , Japan
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19
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Chen K, Wang Y, Liu J, Kang J, Ge Y, Huang W, Lin Z, Guo Z, Zhang Y, Zhang H. In situ preparation of a CsPbBr 3/black phosphorus heterostructure with an optimized interface and photodetector application. NANOSCALE 2019; 11:16852-16859. [PMID: 31478547 DOI: 10.1039/c9nr06488e] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Zero-dimensional (0D)-2D nanostructures, which combine the efficient light-harvesting properties of 0D nanocrystals (NCs) and the ultrafast carrier transfer of 2D materials, have been widely used in optoelectronic devices. Although the most common way to fabricate 0D-2D nanostructures consists of a mixing process, the limited loading efficiency of NCs and the poor 0D-2D interface hinder the efficient photo-carrier generation and fast carrier separation/transfer in such systems. Herein, the in situ synthesis of CsPbBr3/BP heterostructures via a hot-injection method was presented, revealing that both the formation process of CsPbBr3 NCs and the CsPbBr3/black phosphorous (BP) interfaces presented pronounced changes. This led to a larger CsPbBr3 NC size, higher CsPbBr3 NC loading efficiency, optimized combination of CsPbBr3 and BP at the interface, and enhanced carrier transfer properties. In addition, the in situ synthesized CsPbBr3/BP heterostructure was used as a photoactive material for the fabrication of photodetectors, which showed high detectivity (D*) of 2.6 × 1011 Jones. This work highlights a novel strategy to optimize the 0D-2D heterostructure interface and to promote its carrier transfer efficiency, broadening the field of the applications of mixed-dimensional nanostructures.
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Affiliation(s)
- Keqiang Chen
- Collaborative Innovation Centre for Optoelectronic Science & Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, P.R. China.
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20
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Khan Q, Subramanian A, Yu G, Maaz K, Li D, Sagar RUR, Chen K, Lei W, Shabbir B, Zhang Y. Structure optimization of perovskite quantum dot light-emitting diodes. NANOSCALE 2019; 11:5021-5029. [PMID: 30839976 DOI: 10.1039/c8nr09864f] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Although all-inorganic perovskite light emitting diodes (PeLED) have satisfactory stability under an ambient atmosphere, producing devices with high performance is challenging. A device architecture with a reduced energy barrier between adjacent layers and optimized energy level alignment in the PeLED is critical to achieve high electroluminescence efficiency. In this study, we report the optimization of a CsPbBr3-based PeLED device structure with Li-doped TiO2 nanoparticles as the electron transport layer (ETL). Optimal Li doping balances charge carrier injection between the hole transport layer (HTL) and ETL, leading to superior performance in both devices. The turn-on voltages for devices with Li-doped TiO2 nanoparticles were significantly reduced from 7.7 V to 4.9 V and from 3 V to 2 V in the direct and inverted PeLED structures, respectively. The low turn-on voltage for green emission is one of the lowest values among the reported CsPbBr3-based PeLEDs. Further investigations show that the device with an inverted structure is superior to the device with a direct structure because the energy barrier for carrier injection was minimized. The inverted structure devices exhibited a current efficiency of 5.6 cd A-1 for the pristine TiO2 ETL, while it was 15.2 cd A-1 for the Li-doped TiO2 ETL, a factor of ∼2.7 enhancement at 5000 cd m-2.
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Affiliation(s)
- Qasim Khan
- Shenzhen Key Laboratory of Flexible Memory Materials and Devices, College of Electronic Science and Technology, Shenzhen University, Shenzhen 518000, China.
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21
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Wang Y, Chen K, Hao H, Yu G, Zeng B, Wang H, Zhang F, Wu L, Li J, Xiao S, He J, Zhang Y, Zhang H. Engineering ultrafast charge transfer in a bismuthene/perovskite nanohybrid. NANOSCALE 2019; 11:2637-2643. [PMID: 30698602 DOI: 10.1039/c9nr00058e] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
In this work, 0-dimensional (0D) CsPbBr3 QDs were integrated with 2D bismuthene having ultrafast carrier mobility, to obtain a 0D/2D nanohybrid. Moreover, an excellent charge transfer efficiency (0.53) and an appreciable quenching constant of 2.3 × 105 M-1 were observed. Tuning the ratio of bismuthene in the Bi/perovskite nanohybrid achieved the quantified control of charge transfer efficiency and quenching performance at the interface.
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Affiliation(s)
- Yingwei Wang
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Electronic Science and Technology and college of optoelectronic Engineering, Shenzhen University, Shenzhen 518060, People's Republic of China.
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22
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Li C, Guerrero A, Huettner S, Bisquert J. Unravelling the role of vacancies in lead halide perovskite through electrical switching of photoluminescence. Nat Commun 2018; 9:5113. [PMID: 30504825 PMCID: PMC6269531 DOI: 10.1038/s41467-018-07571-6] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 11/08/2018] [Indexed: 11/16/2022] Open
Abstract
We address the behavior in which a bias voltage can be used to switch on and off the photoluminescence of a planar film of methylammonium lead triiodide perovskite (MAPbI3) semiconductor with lateral symmetric electrodes. It is observed that a dark region advances from the positive electrode at a slow velocity of order of 10 μm s–1. Here we explain the existence of the sharp front by a drift of ionic vacancies limited by local saturation, that induce defects and drastically reduce the radiative recombination rate in the film. The model accounts for the time dependence of electrical current due to the ion-induced doping modification, that changes local electron and hole concentration with the drift of vacancies. The analysis of current dependence on time leads to a direct determination of the diffusion coefficient of iodine vacancies and provides detailed information of ionic effects over the electrooptical properties of hybrid perovskite materials. Methylammonium lead triiodide perovskite based solar cells have attracted lots of attention but many physical characteristics of this material remain elusive. Here Li et al. reveal the role of defects in the carrier recombination dynamics in photoluminescence experiments and present a model to describe it.
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Affiliation(s)
- Cheng Li
- Department of Chemistry, University of Bayreuth, Universitätstr. 30, 95447, Bayreuth, Germany
| | - Antonio Guerrero
- Institute of Advanced Materials (INAM), Universitat Jaume I, 12006, Castello, Spain
| | - Sven Huettner
- Department of Chemistry, University of Bayreuth, Universitätstr. 30, 95447, Bayreuth, Germany.
| | - Juan Bisquert
- Institute of Advanced Materials (INAM), Universitat Jaume I, 12006, Castello, Spain.
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23
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Yusoff ARBM, Nazeeruddin MK. Low-Dimensional Perovskites: From Synthesis to Stability in Perovskite Solar Cells. ADVANCED ENERGY MATERIALS 2018; 8:1702073. [DOI: 10.1002/aenm.201702073] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Affiliation(s)
- Abd. Rashid bin Mohd. Yusoff
- Group for Molecular Engineering of Functional Materials; Institute of Chemical Sciences and Engineering; École Polytechnique Fédérale de Lausanne; Lausanne CH-1015 Switzerland
- Advanced Display Research Center; Department of Information Display; Kyung Hee University; Dongdaemoon-gu 130-701 Seoul South Korea
| | - Mohammad Khaja Nazeeruddin
- Group for Molecular Engineering of Functional Materials; Institute of Chemical Sciences and Engineering; École Polytechnique Fédérale de Lausanne; Lausanne CH-1015 Switzerland
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24
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Zhou Q, Park JG, Nie R, Thokchom AK, Ha D, Pan J, Seok SI, Kim T. Nanochannel-Assisted Perovskite Nanowires: From Growth Mechanisms to Photodetector Applications. ACS NANO 2018; 12:8406-8414. [PMID: 29957925 DOI: 10.1021/acsnano.8b03826] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Growing interest in hybrid organic-inorganic lead halide perovskites has led to the development of various perovskite nanowires (NWs), which have potential use in a wide range of applications, including lasers, photodetectors, and light-emitting diodes (LEDs). However, existing nanofabrication approaches lack the ability to control the number, location, orientation, and properties of perovskite NWs. Their growth mechanism also remains elusive. Here, we demonstrate a micro/nanofluidic fabrication technique (MNFFT) enabling both precise control and in situ monitoring of the growth of perovskite NWs. The initial nucleation point and subsequent growth path of a methylammonium lead iodide-dimethylformamide (MAPbI3·DMF) NW array can be guided by a nanochannel. In situ UV-vis absorption spectra are measured in real time, permitting the study of the growth mechanism of the DMF-mediated crystallization of MAPbI3. As an example of an application of the MNFFT, we demonstrate a highly sensitive MAPbI3-NW-based photodetector on both solid and flexible substrates, showing the potential of the MNFFT for low-cost, large-scale, highly efficient, and flexible optoelectronic applications.
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Affiliation(s)
- Qitao Zhou
- Department of Mechanical Engineering , Ulsan National Institute of Science and Technology (UNIST) , 50 UNIST-gil , Ulsan 44919 , Republic of Korea
| | - Jun Gyu Park
- Department of Mechanical Engineering , Ulsan National Institute of Science and Technology (UNIST) , 50 UNIST-gil , Ulsan 44919 , Republic of Korea
| | - Riming Nie
- School of Energy and Chemical Engineering , Ulsan National Institute of Science and Technology (UNIST) , 50 UNIST-gil , Ulsan 44919 , Republic of Korea
| | - Ashish Kumar Thokchom
- Department of Mechanical Engineering , Ulsan National Institute of Science and Technology (UNIST) , 50 UNIST-gil , Ulsan 44919 , Republic of Korea
| | - Dogyeong Ha
- Department of Mechanical Engineering , Ulsan National Institute of Science and Technology (UNIST) , 50 UNIST-gil , Ulsan 44919 , Republic of Korea
| | - Jing Pan
- School of Chemical Engineering , Sungkyunkwan University (SKKU) , 2066, Seobu-ro , Jangan-gu, Suwon 440-746 , Republic of Korea
| | - Sang Il Seok
- School of Energy and Chemical Engineering , Ulsan National Institute of Science and Technology (UNIST) , 50 UNIST-gil , Ulsan 44919 , Republic of Korea
| | - Taesung Kim
- Department of Mechanical Engineering , Ulsan National Institute of Science and Technology (UNIST) , 50 UNIST-gil , Ulsan 44919 , Republic of Korea
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25
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Controllable Synthesis of 2D Perovskite on Different Substrates and Its Application as Photodetector. NANOMATERIALS 2018; 8:nano8080591. [PMID: 30081503 PMCID: PMC6116234 DOI: 10.3390/nano8080591] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 07/12/2018] [Accepted: 07/12/2018] [Indexed: 11/25/2022]
Abstract
Perovskites have recently attracted intense interests for optoelectronic devices application due to their excellent photovoltaic and photoelectric properties. The performance of perovskite-based devices highly depends on the perovskite material properties. However, the widely used spin-coating method can only prepare polycrystalline perovskite and physical vapor deposition (PVD) method requires a higher melting point (>350 °C) substrate due to the high growth temperature, which is not suitable for low melting point substrates, especially for flexible substrates. Here, we present the controlled synthesis of high quality two-dimensional (2D) perovskite platelets on random substrates, including SiO2/Si, Si, mica, glass and flexible polydimethylsiloxane (PDMS) substrates, and our method is applicable to any substrate as long as its melting point is higher than 100 °C. We found that the photoluminescence (PL) characteristics of perovskite depend strongly on the platelets thickness, namely, thicker perovskite platelet has higher PL wavelength and stronger intensity, and thinner perovskite exhibits opposite results. Moreover, photodetectors based on the as-produced perovskite platelets show excellent photoelectric performance with a high photoresponsivity of 8.3 A·W−1, a high on/off ratio of ~103, and a small rise and decay time of 30 and 50 ms, respectively. Our approach in this work provides a feasible way for making 2D perovskite platelets for wide optoelectronic applications.
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26
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Wang Z, Ou Q, Zhang Y, Zhang Q, Hoh HY, Bao Q. Degradation of Two-Dimensional CH 3NH 3PbI 3 Perovskite and CH 3NH 3PbI 3/Graphene Heterostructure. ACS APPLIED MATERIALS & INTERFACES 2018; 10:24258-24265. [PMID: 29877688 DOI: 10.1021/acsami.8b04310] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Hybrid organic-inorganic metal halide perovskites have been considered as promising materials for boosting the performance of photovoltaics and optoelectronics. Reduced-dimensional condiments and tunable properties render two-dimensional (2D) perovskite as novel building blocks for constructing micro-/nanoscale devices in high-performance optoelectronic applications. However, the stability is still one major obstacle for long-term practical use. Herein, we provide microscale insights into the degradation kinetics of 2D CH3NH3PbI3 (MAPbI3) perovskite and CH3NH3PbI3/graphene heterostructures. It is found that the degradation is mainly caused by cation evaporation, which consequently affects the microstructure, light-matter interaction, and the photoluminescence quantum yield efficiency of the 2D perovskite. Interestingly, the encapsulation of perovskite by monolayer graphene can largely preserve the structure of the perovskite nanosheet and maintain reasonable optical properties upon exposure to high temperature and humidity. The heterostructure consisting of perovskite and another 2D impermeable material affords new possibilities to construct high-performance and stable perovskite-based optoelectronic devices.
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Affiliation(s)
- Ziyu Wang
- Department of Materials Science and Engineering , Monash University , Wellington Road , Clayton , Victoria 3800 , Australia
| | - Qingdong Ou
- Department of Materials Science and Engineering , Monash University , Wellington Road , Clayton , Victoria 3800 , Australia
| | - Yupeng Zhang
- College of Electronic Science and Technology , Shenzhen University , Shenzhen 518000 , P. R. China
| | | | - Hui Ying Hoh
- College of Electronic Science and Technology , Shenzhen University , Shenzhen 518000 , P. R. China
| | - Qiaoliang Bao
- Department of Materials Science and Engineering , Monash University , Wellington Road , Clayton , Victoria 3800 , Australia
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27
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Huang L, Gao Q, Sun LD, Dong H, Shi S, Cai T, Liao Q, Yan CH. Composition-Graded Cesium Lead Halide Perovskite Nanowires with Tunable Dual-Color Lasing Performance. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1800596. [PMID: 29782676 DOI: 10.1002/adma.201800596] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Revised: 04/08/2018] [Indexed: 06/08/2023]
Abstract
Cesium lead halide (CsPbX3 ) perovskite has emerged as a promising low-threshold multicolor laser material; however, realizing wavelength-tunable lasing output from a single CsPbX3 nanostructure is still constrained by integrating different composition. Here, the direct synthesis of composition-graded CsPbBrx I3-x nanowires (NWs) is reported through vapor-phase epitaxial growth on mica. The graded composition along the NW, with an increased Br/I from the center to the ends, comes from desynchronized deposition of cesium lead halides and temperature-controlled anion-exchange reaction. The graded composition results in varied bandgaps along the NW, which induce a blueshifted emission from the center to the ends. As an efficient gain media, the nanowire exerts position-dependent lasing performance, with a different color at the ends and center respectively above the threshold. Meanwhile, dual-color lasing with a wavelength separation of 35 nm is activated simultaneously at a site with an intermediate composition. This position-dependent dual-color lasing from a single nanowire makes these metal halide perovskites promising for applications in nanoscale optical devices.
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Affiliation(s)
- Ling Huang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Qinggang Gao
- Beijing Key Laboratory for Optical Materials and Photonic Devices, Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Ling-Dong Sun
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Hao Dong
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Shuo Shi
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Tong Cai
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Qing Liao
- Beijing Key Laboratory for Optical Materials and Photonic Devices, Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Chun-Hua Yan
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
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28
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Qi X, Zhang Y, Ou Q, Ha ST, Qiu CW, Zhang H, Cheng YB, Xiong Q, Bao Q. Photonics and Optoelectronics of 2D Metal-Halide Perovskites. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1800682. [PMID: 29952060 DOI: 10.1002/smll.201800682] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Revised: 04/06/2018] [Indexed: 05/25/2023]
Abstract
In the growing list of 2D semiconductors as potential successors to silicon in future devices, metal-halide perovskites have recently joined the family. Unlike other conversional 2D covalent semiconductors such as graphene, transition metal dichalcogenides, black phosphorus, etc., 2D perovskites are ionic materials, affording many distinct properties of their own, including high photoluminescence quantum efficiency, balanced large exciton binding energy and oscillator strength, and long carrier diffusion length. These unique properties make 2D perovskites potential candidates for optoelectronic and photonic devices such as solar cells, light-emitting diodes, photodetectors, nanolasers, waveguides, modulators, and so on, which represent a relatively new but exciting and rapidly expanding area of research. In this Review, the recent advances in emerging 2D metal-halide perovskites and their applications in the fields of optoelectronics and photonics are summarized and insights into the future direction of these fields are offered.
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Affiliation(s)
- Xiang Qi
- College of Electronic Science and Technology, College of Optoelectronics Engineering, SZU-NUS Collaborative Innovation Centre for Optoelectronic Science & Technology, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, 518000, China
- Department of Materials Science and Engineering, Monash University, Wellington Road, Clayton, Victoria, 3800, Australia
- Hunan Key Laboratory of Micro-Nano Energy Materials and Devices and School of Physics and Optoelectronics, Xiangtan University, Hunan, 411105, P. R. China
| | - Yupeng Zhang
- College of Electronic Science and Technology, College of Optoelectronics Engineering, SZU-NUS Collaborative Innovation Centre for Optoelectronic Science & Technology, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, 518000, China
- Department of Materials Science and Engineering, Monash University, Wellington Road, Clayton, Victoria, 3800, Australia
| | - Qingdong Ou
- Department of Materials Science and Engineering, Monash University, Wellington Road, Clayton, Victoria, 3800, Australia
| | - Son Tung Ha
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Cheng-Wei Qiu
- College of Electronic Science and Technology, College of Optoelectronics Engineering, SZU-NUS Collaborative Innovation Centre for Optoelectronic Science & Technology, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, 518000, China
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore, 117583, Singapore
| | - Han Zhang
- College of Electronic Science and Technology, College of Optoelectronics Engineering, SZU-NUS Collaborative Innovation Centre for Optoelectronic Science & Technology, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, 518000, China
| | - Yi-Bing Cheng
- Department of Materials Science and Engineering, Monash University, Wellington Road, Clayton, Victoria, 3800, Australia
| | - Qihua Xiong
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Qiaoliang Bao
- Department of Materials Science and Engineering, Monash University, Wellington Road, Clayton, Victoria, 3800, Australia
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29
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Ou Q, Zhang Y, Wang Z, Yuwono JA, Wang R, Dai Z, Li W, Zheng C, Xu ZQ, Qi X, Duhm S, Medhekar NV, Zhang H, Bao Q. Strong Depletion in Hybrid Perovskite p-n Junctions Induced by Local Electronic Doping. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1705792. [PMID: 29493028 DOI: 10.1002/adma.201705792] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 12/25/2017] [Indexed: 05/19/2023]
Abstract
A semiconductor p-n junction typically has a doping-induced carrier depletion region, where the doping level positively correlates with the built-in potential and negatively correlates with the depletion layer width. In conventional bulk and atomically thin junctions, this correlation challenges the synergy of the internal field and its spatial extent in carrier generation/transport. Organic-inorganic hybrid perovskites, a class of crystalline ionic semiconductors, are promising alternatives because of their direct badgap, long diffusion length, and large dielectric constant. Here, strong depletion in a lateral p-n junction induced by local electronic doping at the surface of individual CH3 NH3 PbI3 perovskite nanosheets is reported. Unlike conventional surface doping with a weak van der Waals adsorption, covalent bonding and hydrogen bonding between a MoO3 dopant and the perovskite are theoretically predicted and experimentally verified. The strong hybridization-induced electronic coupling leads to an enhanced built-in electric field. The large electric permittivity arising from the ionic polarizability further contributes to the formation of an unusually broad depletion region up to 10 µm in the junction. Under visible optical excitation without electrical bias, the lateral diode demonstrates unprecedented photovoltaic conversion with an external quantum efficiency of 3.93% and a photodetection responsivity of 1.42 A W-1 .
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Affiliation(s)
- Qingdong Ou
- Department of Materials Science and Engineering, ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), Monash University, Clayton, Victoria, 3800, Australia
| | - Yupeng Zhang
- College of Electronic Science and Technology and College of Optoelectronics Engineering, Shenzhen University, Shenzhen, 518000, P. R. China
| | - Ziyu Wang
- Department of Materials Science and Engineering, ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), Monash University, Clayton, Victoria, 3800, Australia
| | - Jodie A Yuwono
- Department of Materials Science and Engineering, ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), Monash University, Clayton, Victoria, 3800, Australia
| | - Rongbin Wang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123, P. R. China
- Institut für Physik, Humboldt-Universität zu Berlin, 12489, Berlin, Germany
| | - Zhigao Dai
- Department of Materials Science and Engineering, ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), Monash University, Clayton, Victoria, 3800, Australia
- Laboratory of Printable Functional Nanomaterials and Printed Electronics, School of Printing and Packaging, Wuhan University, Wuhan, 430072, P. R. China
| | - Wei Li
- Department of Materials Science and Engineering, ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), Monash University, Clayton, Victoria, 3800, Australia
| | - Changxi Zheng
- Department of Civil Engineering, Monash University, Clayton, Victoria, 3800, Australia
| | - Zai-Quan Xu
- Department of Materials Science and Engineering, ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), Monash University, Clayton, Victoria, 3800, Australia
| | - Xiang Qi
- Department of Materials Science and Engineering, ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), Monash University, Clayton, Victoria, 3800, Australia
- School of Physics and Optoelectronics, Xiangtan University, Hunan, 411105, P. R. China
| | - Steffen Duhm
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123, P. R. China
| | - Nikhil V Medhekar
- Department of Materials Science and Engineering, ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), Monash University, Clayton, Victoria, 3800, Australia
| | - Han Zhang
- College of Electronic Science and Technology and College of Optoelectronics Engineering, Shenzhen University, Shenzhen, 518000, P. R. China
| | - Qiaoliang Bao
- Department of Materials Science and Engineering, ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), Monash University, Clayton, Victoria, 3800, Australia
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30
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Bidikoudi M, Fresta E, Costa RD. White perovskite based lighting devices. Chem Commun (Camb) 2018; 54:8150-8169. [DOI: 10.1039/c8cc03166e] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Hybrid organic–inorganic and all-inorganic metal halide perovskites have been one of the most intensively studied materials during the last few years.
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Affiliation(s)
| | - E. Fresta
- IMDEA Materials Institute
- Madrid
- Spain
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31
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Dipole-field-assisted charge extraction in metal-perovskite-metal back-contact solar cells. Nat Commun 2017; 8:613. [PMID: 28931833 PMCID: PMC5606993 DOI: 10.1038/s41467-017-00588-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 07/11/2017] [Indexed: 11/08/2022] Open
Abstract
Hybrid organic-inorganic halide perovskites are low-cost solution-processable solar cell materials with photovoltaic properties that rival those of crystalline silicon. The perovskite films are typically sandwiched between thin layers of hole and electron transport materials, which efficiently extract photogenerated charges. This affords high-energy conversion efficiencies but results in significant performance and fabrication challenges. Herein we present a simple charge transport layer-free perovskite solar cell, comprising only a perovskite layer with two interdigitated gold back-contacts. Charge extraction is achieved via self-assembled monolayers and their associated dipole fields at the metal-perovskite interface. Photovoltages of ~600 mV generated by self-assembled molecular monolayer modified perovskite solar cells are equivalent to the built-in potential generated by individual dipole layers. Efficient charge extraction results in photocurrents of up to 12.1 mA cm−2 under simulated sunlight, despite a large electrode spacing. Simplified device concepts may become important for the development of low cost photovoltaics. Lin et al. report solar cells based on interdigitated gold back-contacts and metal halide perovskites where charge extraction is assisted via a dipole field generated by self-assembled molecular monolayers.
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32
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Wang X, Ling Y, Chiu YC, Du Y, Barreda JL, Perez-Orive F, Ma B, Xiong P, Gao H. Dynamic Electronic Junctions in Organic-Inorganic Hybrid Perovskites. NANO LETTERS 2017; 17:4831-4839. [PMID: 28661680 DOI: 10.1021/acs.nanolett.7b01665] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Organic-inorganic hybrid perovskites have shown great potential as building blocks for low-cost optoelectronics for their exceptional optical and electrical properties. Despite the remarkable progress in device demonstration, fundamental understanding of the physical processes in halide perovskites remains limited, especially the unusual electronic behaviors such as the current-voltage hysteresis and the switchable photovoltaic effect. These phenomena are of particular interests for being closely related to device functionalities and performance. In this work, a microscopic picture of electric fields in halide perovskite thin films was obtained using scanning laser microscopy. Unlike conventional semiconductors, distribution of the built-in electric fields in the halide perovskite evolves dynamically under the stimulation of external biases. The observations can be well explained using a model based on field-assisted ion migration, indicating that the mechanism responsible for the evolving charge transport observed in this material is not purely electronic. The anomalous dynamic responses to the applied bias are found to be effectively suppressed by operating the devices at reduced temperature or processing the materials at elevated temperature, which provide potential strategies for designing and creating halide perovskites with more stable charge transport properties in the development of viable perovskite-based optoelectronics.
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Affiliation(s)
- Xi Wang
- Department of Physics and ‡Materials Science Program, Florida State University , Tallahassee, Florida 32306, United States
- National High Magnetic Field Laboratory and ⊥Department of Chemical & Biomedical Engineering, Florida State University , Tallahassee, Florida 32310, United States
| | - Yichuan Ling
- Department of Physics and ‡Materials Science Program, Florida State University , Tallahassee, Florida 32306, United States
- National High Magnetic Field Laboratory and ⊥Department of Chemical & Biomedical Engineering, Florida State University , Tallahassee, Florida 32310, United States
| | - Yu-Che Chiu
- Department of Physics and ‡Materials Science Program, Florida State University , Tallahassee, Florida 32306, United States
- National High Magnetic Field Laboratory and ⊥Department of Chemical & Biomedical Engineering, Florida State University , Tallahassee, Florida 32310, United States
| | - Yijun Du
- Department of Physics and ‡Materials Science Program, Florida State University , Tallahassee, Florida 32306, United States
- National High Magnetic Field Laboratory and ⊥Department of Chemical & Biomedical Engineering, Florida State University , Tallahassee, Florida 32310, United States
| | - Jorge Luis Barreda
- Department of Physics and ‡Materials Science Program, Florida State University , Tallahassee, Florida 32306, United States
- National High Magnetic Field Laboratory and ⊥Department of Chemical & Biomedical Engineering, Florida State University , Tallahassee, Florida 32310, United States
| | - Fernando Perez-Orive
- Department of Physics and ‡Materials Science Program, Florida State University , Tallahassee, Florida 32306, United States
- National High Magnetic Field Laboratory and ⊥Department of Chemical & Biomedical Engineering, Florida State University , Tallahassee, Florida 32310, United States
| | - Biwu Ma
- Department of Physics and ‡Materials Science Program, Florida State University , Tallahassee, Florida 32306, United States
- National High Magnetic Field Laboratory and ⊥Department of Chemical & Biomedical Engineering, Florida State University , Tallahassee, Florida 32310, United States
| | - Peng Xiong
- Department of Physics and ‡Materials Science Program, Florida State University , Tallahassee, Florida 32306, United States
- National High Magnetic Field Laboratory and ⊥Department of Chemical & Biomedical Engineering, Florida State University , Tallahassee, Florida 32310, United States
| | - Hanwei Gao
- Department of Physics and ‡Materials Science Program, Florida State University , Tallahassee, Florida 32306, United States
- National High Magnetic Field Laboratory and ⊥Department of Chemical & Biomedical Engineering, Florida State University , Tallahassee, Florida 32310, United States
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33
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Li P, Chen Y, Yang T, Wang Z, Lin H, Xu Y, Li L, Mu H, Shivananju BN, Zhang Y, Zhang Q, Pan A, Li S, Tang D, Jia B, Zhang H, Bao Q. Two-Dimensional CH 3NH 3PbI 3 Perovskite Nanosheets for Ultrafast Pulsed Fiber Lasers. ACS APPLIED MATERIALS & INTERFACES 2017; 9:12759-12765. [PMID: 28317370 DOI: 10.1021/acsami.7b01709] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Even though the nonlinear optical effects of solution processed organic-inorganic perovskite films have been studied, the nonlinear optical properties in two-dimensional (2D) perovskites, especially their applications for ultrafast photonics, are largely unexplored. In comparison to bulk perovskite films, 2D perovskite nanosheets with small thicknesses of a few unit cells are more suitable for investigating the intrinsic nonlinear optical properties because bulk recombination of photocarriers and the nonlinear scattering are relatively small. In this research, we systematically investigated the nonlinear optical properties of 2D perovskite nanosheets derived from a combined solution process and vapor phase conversion method. It was found that 2D perovskite nanosheets have stronger saturable absorption properties with large modulation depth and very low saturation intensity compared with those of bulk perovskite films. Using an all dry transfer method, we constructed a new type of saturable absorber device based on single piece 2D perovskite nanosheet. Stable soliton state mode-locking was achieved, and ultrafast picosecond pulses were generated at 1064 nm. This work is likely to pave the way for ultrafast photonic and optoelectronic applications based on 2D perovskites.
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Affiliation(s)
- Pengfei Li
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, China
| | - Yao Chen
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, China
| | - Tieshan Yang
- Centre for Micro-Photonics, Faculty of Science Engineering and Technology, Swinburne University of Technology , Hawthorn VIC 3122, Australia
| | - Ziyu Wang
- Department of Materials Science and Engineering, Monash University , Clayton, Victoria 3800, Australia
| | - Han Lin
- Centre for Micro-Photonics, Faculty of Science Engineering and Technology, Swinburne University of Technology , Hawthorn VIC 3122, Australia
| | - Yanhua Xu
- College of Electronic Science and Technology, SZU-NUS Collaborative Innovation Centre for Optoelectronic Science & Technology, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University , Shenzhen 518000, China
| | - Lei Li
- Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University , Xuzhou 221116, China
| | - Haoran Mu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, China
| | - Bannur Nanjunda Shivananju
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, China
| | - Yupeng Zhang
- College of Electronic Science and Technology, SZU-NUS Collaborative Innovation Centre for Optoelectronic Science & Technology, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University , Shenzhen 518000, China
| | - Qinglin Zhang
- College of Physics and Microelectronics Science, Key Laboratory for MicroNano Physics and Technology of Hunan Province, Hunan University , Changsha 410082, China
| | - Anlian Pan
- College of Physics and Microelectronics Science, Key Laboratory for MicroNano Physics and Technology of Hunan Province, Hunan University , Changsha 410082, China
| | - Shaojuan Li
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, China
| | - Dingyuan Tang
- Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University , Xuzhou 221116, China
| | - Baohua Jia
- Centre for Micro-Photonics, Faculty of Science Engineering and Technology, Swinburne University of Technology , Hawthorn VIC 3122, Australia
| | - Han Zhang
- College of Electronic Science and Technology, SZU-NUS Collaborative Innovation Centre for Optoelectronic Science & Technology, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University , Shenzhen 518000, China
| | - Qiaoliang Bao
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, China
- Department of Materials Science and Engineering, Monash University , Clayton, Victoria 3800, Australia
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34
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Vicente N, Garcia-Belmonte G. Methylammonium Lead Bromide Perovskite Battery Anodes Reversibly Host High Li-Ion Concentrations. J Phys Chem Lett 2017; 8:1371-1374. [PMID: 28286952 DOI: 10.1021/acs.jpclett.7b00189] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Ions migrate through the hybrid halide perovskite lattice, allowing for a variety of electrochemical applications as perovskite-based electrodes for batteries. It is still unknown how extrinsic defects such as lithium ions interact with the hybrid perovskite structure during the charging process. It is shown here that Li+ intake/release proceeds by topotactic insertion into the hybrid perovskite host, without drastic structural alterations or rearrangement. Even the perovskite electronic band structure remains basically unaltered upon cycling. The occurrence of conversion or alloying reactions producing metallic lead is discarded. Stable specific capacity ∼200 mA h g-1 is delivered, which entails outstanding Li-ion molar concentration, x in LixCH3NH3PbBr3, approaching 3. Slight distortions of the perovskite lattice upon cycling explain the highly reversible Li+ intercalation reaction that also exhibits an excellent rate capability.
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Affiliation(s)
- Nuria Vicente
- Institute of Advanced Materials (INAM), Universitat Jaume I , 12006 Castelló, Spain
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35
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Xiao R, Hou Y, Fu Y, Peng X, Wang Q, Gonzalez E, Jin S, Yu D. Photocurrent Mapping in Single-Crystal Methylammonium Lead Iodide Perovskite Nanostructures. NANO LETTERS 2016; 16:7710-7717. [PMID: 27960528 DOI: 10.1021/acs.nanolett.6b03782] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We investigate solution-grown single-crystal methylammonium lead iodide (MAPbI3) nanowires and nanoplates with spatially resolved photocurrent mapping. Sensitive perovskite photodetectors with Schottky contacts are fabricated by directly transferring the nanostructures on top of prepatterned gold electrodes. Scanning photocurrent microscopy (SPCM) measurements on these single-crystal nanostructures reveal a minority charge carrier diffusion length up to 21 μm, which is significantly longer than the values observed in polycrystalline MAPbI3 thin films. When the excitation energy is close to the bandgap, the photocurrent becomes substantially stronger at the edges of nanostructures, which can be understood by the enhancement of light coupling to the nanostructures. These perovskite nanostructures with long carrier diffusion lengths and strong photonic enhancement not only provide an excellent platform for studying their intrinsic properties but may also boost the performance of perovskite-based optoelectronic devices.
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Affiliation(s)
- Rui Xiao
- Department of Physics, University of California , 1 Shields Avenue, Davis, California 95616, United States
| | - Yasen Hou
- Department of Physics, University of California , 1 Shields Avenue, Davis, California 95616, United States
| | - Yongping Fu
- Department of Chemistry, University of Wisconsin-Madison , 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Xingyue Peng
- Department of Physics, University of California , 1 Shields Avenue, Davis, California 95616, United States
| | - Qi Wang
- Department of Physics, University of California , 1 Shields Avenue, Davis, California 95616, United States
| | - Eliovardo Gonzalez
- Department of Physics, California State University , 5500 University Parkway, San Bernardino, California 92407, United States
| | - Song Jin
- Department of Chemistry, University of Wisconsin-Madison , 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Dong Yu
- Department of Physics, University of California , 1 Shields Avenue, Davis, California 95616, United States
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36
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Ono LK, Qi Y. Surface and Interface Aspects of Organometal Halide Perovskite Materials and Solar Cells. J Phys Chem Lett 2016; 7:4764-4794. [PMID: 27791377 DOI: 10.1021/acs.jpclett.6b01951] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The current challenges (e.g., stability, hysteresis, etc.) in organometal halide perovskite solar cell research are closely correlated with surfaces and interfaces. For instance, efficient generation of charges, extraction, and transport with minimum recombination through interlayer interfaces is crucial to attain high-efficiency solar cell devices. Furthermore, intralayer interfaces may be present in the form of grain boundaries within a film composed of the same material, for example, a polycrystalline perovskite layer. The adjacent grains may assume different crystal orientations and/or have different chemical compositions, which impacts charge excitation and dynamics and thereby the overall solar cell performance. In this Perspective, we present case studies to demonstrate (1) how surfaces and interfaces can impact material properties and device performance and (2) how these issues can be investigated by surface science techniques, such as scanning probe microscopy, photoelectron spectroscopy, and so forth. We end this Perspective by outlining the future research directions based on the reported results as well as the new trends in the field.
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Affiliation(s)
- Luis K Ono
- Energy Materials and Surface Sciences Unit (EMSS), Okinawa Institute of Science and Technology Graduate University (OIST) , 1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan
| | - Yabing Qi
- Energy Materials and Surface Sciences Unit (EMSS), Okinawa Institute of Science and Technology Graduate University (OIST) , 1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan
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Zhang Y, Liu J, Wang Z, Xue Y, Ou Q, Polavarapu L, Zheng J, Qi X, Bao Q. Synthesis, properties, and optical applications of low-dimensional perovskites. Chem Commun (Camb) 2016; 52:13637-13655. [DOI: 10.1039/c6cc06425f] [Citation(s) in RCA: 222] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This feature article provides an overview of synthesis, properties and applications of low-dimensional perovskites.
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Affiliation(s)
- Yupeng Zhang
- Department of Materials Science and Engineering
- Monash University
- Clayton
- Australia
| | - Jingying Liu
- Department of Materials Science and Engineering
- Monash University
- Clayton
- Australia
| | - Ziyu Wang
- Department of Materials Science and Engineering
- Monash University
- Clayton
- Australia
| | - Yunzhou Xue
- Department of Materials Science and Engineering
- Monash University
- Clayton
- Australia
- Institute of Functional Nano and Soft Materials (FUNSOM)
| | - Qingdong Ou
- Department of Materials Science and Engineering
- Monash University
- Clayton
- Australia
| | - Lakshminarayana Polavarapu
- Chair for Photonics and Optoelectronics
- Department of Physics and Center for Nanoscience (CeNS)
- Ludwig-Maximilians-Universität München
- 80799 Munich
- Germany
| | - Jialu Zheng
- Department of Materials Science and Engineering
- Monash University
- Clayton
- Australia
| | - Xiang Qi
- Department of Materials Science and Engineering
- Monash University
- Clayton
- Australia
- Hunan Key Laboratory of Micro-Nano Energy Materials and Devices
| | - Qiaoliang Bao
- Institute of Functional Nano and Soft Materials (FUNSOM)
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, and Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Suzhou 215123
- P. R. China
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