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Jeong G, Koo D, Woo JH, Choi Y, Son E, Huang F, Kim JY, Park H. Highly Efficient Self-Encapsulated Flexible Semitransparent Perovskite Solar Cells via Bifacial Cation Exchange. ACS APPLIED MATERIALS & INTERFACES 2022; 14:33297-33305. [PMID: 35839215 DOI: 10.1021/acsami.2c08023] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Flexible semitransparent perovskite solar cells (ST-PSCs) have great potential for use in high-density energy systems, such as building or vehicle integrated photovoltaics, considering the great features of PSC devices, including high performance, light weight, thin-film processability, and high near-infrared transmittance. Despite numerous efforts toward achieving efficiency and flexibility in ST-PSCs, the realization of high-performance and operational stability in ST-PSCs still require further development. Herein, we demonstrated the development of highly efficient, stable, and flexible ST-PSCs using polyimide-integrated graphene electrodes via a lamination-assisted bifacial cation exchange strategy. A high-quality perovskite layer was obtained through the cation exchange reaction using the lamination process, and ST-PSCs with 15.1% efficiency were developed. The proposed ST-PSC device also demonstrated excellent operational stability, mechanical durability, and moisture stability owing to the chemically inert and mechanically robust graphene electrodes. This study provides an effective strategy for developing highly functional ST-perovskite optoelectronic devices with high-performance and long-term operational stability.
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Affiliation(s)
- Gyujeong Jeong
- Department of Materials Science and Engineering, Graduate School of Semiconductor Materials and Devices Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea
| | - Donghwan Koo
- Department of Materials Science and Engineering, Graduate School of Semiconductor Materials and Devices Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea
| | - Jeong-Hyun Woo
- Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Yunseong Choi
- Department of Materials Science and Engineering, Graduate School of Semiconductor Materials and Devices Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea
| | - Eunbin Son
- Department of Materials Science and Engineering, Graduate School of Semiconductor Materials and Devices Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea
| | - Fuzhi Huang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei 430070, P. R. China
- Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Foshan, Guangdong 528216, P. R. China
| | - Ju-Young Kim
- Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Hyesung Park
- Department of Materials Science and Engineering, Graduate School of Semiconductor Materials and Devices Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea
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Zhao X, Long R. Benign Effects of Twin Boundaries on Charge Carrier Lifetime in Metal Halide Perovskites by a Time-Domain Study. J Phys Chem Lett 2021; 12:8575-8582. [PMID: 34468158 DOI: 10.1021/acs.jpclett.1c02653] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Experiments show that two-dimensional twin boundaries (TBs) defects are benign to the excited-state lifetime of metal halide perovskites and solar cells performance. However, the mechanism remains unclear. By performing nonadiabatic (NA) molecular dynamics simulations on FAPbI3 (FA= HC(NH2)2+), we demonstrate that TBs increase the bandgap without introducing midgap states, promote charge separation by localizing electrons and holes that reduce NA coupling and accelerate the loss of coherence, slowing nonradiative electron-hole recombination by a factor of 2.3 compared to pristine FAPbI3, which occurs within sub-10 ns and agrees well with the experiment. Raising the temperature shortens the coherence time and reduces the NA coupling by increasing the charge localization due to the enhanced distortions of inorganic Pb-I lattice, making the recombination even slower. Our study rationalizes the positive influence of TBs and temperature on perovskite charge dynamics and emphasizes the roles played by the charge localization and quantum coherence.
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Affiliation(s)
- Xi Zhao
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education, Beijing Normal University, Beijing, 100875, People's Republic of China
| | - Run Long
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education, Beijing Normal University, Beijing, 100875, People's Republic of China
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Crystal Engineering Approach for Fabrication of Inverted Perovskite Solar Cell in Ambient Conditions. ENERGIES 2021. [DOI: 10.3390/en14061751] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In this paper, we demonstrate the high potentialities of pristine single-cation and mixed cation/anion perovskite solar cells (PSC) fabricated by sequential method deposition in p-i-n planar architecture (ITO/NiOX/Perovskite/PCBM/BCP/Ag) in ambient conditions. We applied the crystal engineering approach for perovskite deposition to control the quality and crystallinity of the light-harvesting film. The formation of a full converted and uniform perovskite absorber layer from poriferous pre-film on a planar hole transporting layer (HTL) is one of the crucial factors for the fabrication of high-performance PSCs. We show that the in-air sequential deposited MAPbI3-based PSCs on planar nickel oxide (NiOX) permitted to obtain a Power Conversion Efficiency (PCE) exceeding 14% while the (FA,MA,Cs)Pb(I,Br)3-based PSC achieved 15.6%. In this paper we also compared the influence of transporting layers on the cell performance by testing material depositions quantity and thickness (for hole transporting layer), and conditions of deposition processes (for electron transporting layer). Moreover, we optimized second step of perovskite deposition by varying the dipping time of substrates into the MA(I,Br) solution. We have shown that the layer by layer deposition of the NiOx is the key point to improve the efficiency for inverted perovskite solar cell out of glove-box using sequential deposition method, increasing the relative efficiency of +26% with respect to reference cells.
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Guo Y, Yuan S, Zhu D, Yu M, Wang HY, Lin J, Wang Y, Qin Y, Zhang JP, Ai XC. Influence of the MACl additive on grain boundaries, trap-state properties, and charge dynamics in perovskite solar cells. Phys Chem Chem Phys 2021; 23:6162-6170. [PMID: 33687033 DOI: 10.1039/d0cp06575g] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Grain boundary trap passivation in perovskite films has become one of the most effective strategies for suppressing the charge recombination and enhancing the photovoltaic performance of perovskite solar cells, whereas the relevant trap-state properties and the charge carrier dynamics need to be further clarified. In this work, the CH3NH3Cl (MACl) additive is introduced into the MAI:PbI2 precursor solution to obtain perovskite films comprising various grain sizes with distinct grain boundaries and trap-state properties. The influence of grain boundary traps passivated with the MACl additive on trap-state properties and charge carrier transport/recombination dynamics is systematically studied with time-resolved spectroscopic and transient photoelectric characterization. Specifically, the MACl amount determines the content of the PbI2 residual in the final perovskite, leading to photoluminescence quenching induced by charge transfer. The trap-state distribution result reveals that the deep-level traps at the grain boundaries as the main sources of charge recombination centers are dramatically passivated. Low-temperature photoluminescence spectroscopy distinguishes and compares the trap-state emission related to different perovskite phases. Transient photoelectric measurements including photovoltage decay and charge extraction further demonstrate that the boundary trap passivation can effectively promote charge transport and inhibit charge recombination in devices treated with the optimized MACl amount. As a result, the corresponding device possesses superior photovoltaic parameters to the control device. This work proposes a systematic understanding of the grain boundary trap passivation strategy and provides a new insight into the development of high-performance perovskite solar cells.
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Affiliation(s)
- Yanru Guo
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
| | - Shuai Yuan
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
| | - Dongping Zhu
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
| | - Man Yu
- School of Materials Engineering, Xi'an Aeronautical University, Xi'an 710077, China
| | - Hao-Yi Wang
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
| | - Jun Lin
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
| | - Yi Wang
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
| | - Yujun Qin
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
| | - Jian-Ping Zhang
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
| | - Xi-Cheng Ai
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
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Lin Z. Extraction technique of trap states based on transient photo-voltage measurement. Sci Rep 2020; 10:12888. [PMID: 32732950 PMCID: PMC7393153 DOI: 10.1038/s41598-020-69914-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 07/21/2020] [Indexed: 11/18/2022] Open
Abstract
This article puts forward a technique for extracting the density of trap states (DOST) distribution based on the transient photo-voltage (TPV) measurement result. We prove that when the TPV result is linear, the DOST distribution is exponential type and vice versa. Compared to the approach based on the space charge limited current measurement, the method given in this paper has the advantage of requiring less calculation. The results obtained by our method provides a guidance for preparing less trap states solar cells.
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Affiliation(s)
- Zedong Lin
- Department of Chemistry, Renmin University of China, Beijing, 100872, China.
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Jin Z, Guo Y, Yuan S, Zhao JS, Liang XM, Qin Y, Zhang JP, Ai XC. Modification of NiO x hole transport layer for acceleration of charge extraction in inverted perovskite solar cells. RSC Adv 2020; 10:12289-12296. [PMID: 35497625 PMCID: PMC9050867 DOI: 10.1039/d0ra00209g] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 03/19/2020] [Indexed: 12/19/2022] Open
Abstract
The modification of the inorganic hole transport layer has been an efficient method for optimizing the performance of inverted perovskite solar cells. In this work, we propose a facile modification of a compact NiO x film with NiO x nanoparticles and explore the effects on the charge carrier dynamic behaviors and photovoltaic performance of inverted perovskite devices. The modification of the NiO x hole transport layer can not only enlarge the surface area and infiltration ability, but also adjust the valence band maximum to well match that of perovskite. The photoluminescence results confirm the acceleration of the charge separation and transport at the NiO x /perovskite interface. The corresponding device possesses better photovoltaic parameters than the device based on control NiO x films. Moreover, the charge carrier transport/recombination dynamics are further systematically investigated by the measurements of time-resolved photoluminescence, transient photovoltage and transient photocurrent. Consequently, the results demonstrate that proper modification of NiO x can significantly enlarge interface area and improve the hole extraction capacity, thus efficiently promoting charge separation and inhibiting charge recombination, which leads to the enhancement of the device performances.
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Affiliation(s)
- Zezhu Jin
- Department of Chemistry, Renmin University of China Beijing 100872 China
| | - Yanru Guo
- Department of Chemistry, Renmin University of China Beijing 100872 China
| | - Shuai Yuan
- Department of Chemistry, Renmin University of China Beijing 100872 China
| | - Jia-Shang Zhao
- Department of Chemistry, Renmin University of China Beijing 100872 China
| | - Xiao-Min Liang
- Department of Chemistry, Renmin University of China Beijing 100872 China
| | - Yujun Qin
- Department of Chemistry, Renmin University of China Beijing 100872 China
| | - Jian-Ping Zhang
- Department of Chemistry, Renmin University of China Beijing 100872 China
| | - Xi-Cheng Ai
- Department of Chemistry, Renmin University of China Beijing 100872 China
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Zhou C, Chu Y, Ma L, Zhong Y, Wang C, Liu Y, Zhang H, Wang B, Feng X, Yu X, Zhang X, Sun Y, Li X, Zhao G. Photoluminescence spectral broadening, chirality transfer and amplification of chiral perovskite materials (R-X-p-mBZA)2PbBr4 (X = H, F, Cl, Br) regulated by van der Waals and halogen atoms interactions. Phys Chem Chem Phys 2020; 22:17299-17305. [DOI: 10.1039/d0cp02530e] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We introduced halogen-substituted chiral molecules as A-site cations to synthesize a series of novel organic–inorganic hybrid 2D chiral perovskite materials (R-X-p-mBZA)2PbBr4 (X = H, F, Cl, Br; p: para-position; mBZA = α-methylbenzylamine).
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