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Liu Y, Liu Q, Lu Y, Fu J, Wu J, Tian Q, Fan B, Zhang Y, Bai H, Wang HQ. Polyfluorinated Organic Diammonium Induced Lead Iodide Arrangement for Efficient Two-Step-Processed Perovskite Solar Cells. Angew Chem Int Ed Engl 2024; 63:e202402568. [PMID: 38650435 DOI: 10.1002/anie.202402568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 03/26/2024] [Accepted: 04/22/2024] [Indexed: 04/25/2024]
Abstract
The inefficient conversion of lead iodide to perovskite has become one of the major challenges in further improving the performance of perovskite solar cells fabricated by the two-step method. Herein, the discontinuous lead iodide layer realized by introduction of a polyfluorinated organic diammonium salt, octafluoro-([1,1'-biphenyl]-4,4'-diyl)-dimethanaminium (OFPP) iodide which does not form low-dimensional perovskites, can enable the satisfactory conversion of lead iodide into perovskite, leading to meliorated crystallinity and enlarged grains in the OFPP modulated perovskite (OFPP-PVK) film. Combined with the effective defect passivation, the OFPP-PVK films show enhanced charge mobility and suppressed charge recombination. Accordingly, the OFPP-based perovskite solar cells exhibit a champion efficiency of 24.76 % with better device stability. Moreover, a superior efficiency of 21.04 % was achieved in a large-area perovskite module (100 cm2). Our work provides a unique insight into the function of organic diammonium additive in boosting photovoltaic performance.
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Affiliation(s)
- Yang Liu
- School of Materials Science and Engineering (MSE), NingboTech University, No. 1 South Qianhu Road, Ningbo, 315211, China
| | - Qiuju Liu
- School of Materials Science and Engineering (MSE), NingboTech University, No. 1 South Qianhu Road, Ningbo, 315211, China
- Kunshan GCL Optoelectronic Material Co. Ltd., Kunshan, Jiangsu, 215300, China
| | - Yusong Lu
- Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing, 401331, China
| | - Jianfei Fu
- School of Materials Science and Engineering (MSE), NingboTech University, No. 1 South Qianhu Road, Ningbo, 315211, China
| | - Jifeng Wu
- KAUST Catalysis Center (KCC), Division of Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Qingyong Tian
- Kunshan GCL Optoelectronic Material Co. Ltd., Kunshan, Jiangsu, 215300, China
| | - Bin Fan
- Kunshan GCL Optoelectronic Material Co. Ltd., Kunshan, Jiangsu, 215300, China
| | - Yan Zhang
- Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing, 401331, China
| | - Hua Bai
- College of Materials, Xiamen University, Xiamen, 361005, China, P.R
| | - Hai-Qiao Wang
- School of Materials Science and Engineering (MSE), NingboTech University, No. 1 South Qianhu Road, Ningbo, 315211, China
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2
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Mo̷lnås H, Paul SJ, Scimeca MR, Mattu N, Zuo J, Parashar N, Li L, Riedo E, Sahu A. Dedoping of Intraband Silver Selenide Colloidal Quantum Dots through Strong Electronic Coupling at Organic/Inorganic Hybrid Interfaces. CRYSTAL GROWTH & DESIGN 2024; 24:2821-2832. [PMID: 38585377 PMCID: PMC10995946 DOI: 10.1021/acs.cgd.3c01474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 03/08/2024] [Accepted: 03/11/2024] [Indexed: 04/09/2024]
Abstract
Colloidal quantum dot (CQD) infrared (IR) photodetectors can be fabricated and operated with larger spectral tunability, fewer limitations in terms of cooling requirements and substrate lattice matching, and at a potentially lower cost than detectors based on traditional bulk materials. Silver selenide (Ag2Se) has emerged as a promising sustainable alternative to current state-of-the-art toxic semiconductors based on lead, cadmium, and mercury operating in the IR. However, an impeding gap in available absorption bandwidth for Ag2Se CQDs exists in the short-wave infrared (SWIR) region due to degenerate doping by the environment, switching the CQDs from intrinsic interband semiconductors in the near-infrared (NIR) to intraband absorbing CQDs in the mid-wave infrared (MWIR). Herein, we show that the small molecular p-type dopant 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ) can be used to extract electrons from the 1Se state of MWIR active Ag2Se CQDs to activate their intrinsic energy gap in the SWIR window. We demonstrate quenching of the MWIR Ag2Se absorbance peak, shifting of nitrile vibrational peaks characteristic of charge-neutral F4-TCNQ, as well as enhanced CQD absorption around ∼2500 nm after doping both in ambient and under air-free conditions. We elucidate the doping mechanism to be one that involves an integer charge transfer akin to doping in semiconducting polymers. These indications of charge transfer are promising milestones on the path to achieving sustainable SWIR Ag2Se CQD photodetectors.
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Affiliation(s)
- Håvard Mo̷lnås
- Department of Chemical and
Biomolecular Engineering, Tandon School of Engineering, New York University, Brooklyn, New York 11201, United States
| | - Shlok Joseph Paul
- Department of Chemical and
Biomolecular Engineering, Tandon School of Engineering, New York University, Brooklyn, New York 11201, United States
| | - Michael R. Scimeca
- Department of Chemical and
Biomolecular Engineering, Tandon School of Engineering, New York University, Brooklyn, New York 11201, United States
| | - Navkawal Mattu
- Department of Chemical and
Biomolecular Engineering, Tandon School of Engineering, New York University, Brooklyn, New York 11201, United States
| | - Jiaqi Zuo
- Department of Chemical and
Biomolecular Engineering, Tandon School of Engineering, New York University, Brooklyn, New York 11201, United States
| | - Nitika Parashar
- Department of Chemical and
Biomolecular Engineering, Tandon School of Engineering, New York University, Brooklyn, New York 11201, United States
| | - Letian Li
- Department of Chemical and
Biomolecular Engineering, Tandon School of Engineering, New York University, Brooklyn, New York 11201, United States
| | - Elisa Riedo
- Department of Chemical and
Biomolecular Engineering, Tandon School of Engineering, New York University, Brooklyn, New York 11201, United States
| | - Ayaskanta Sahu
- Department of Chemical and
Biomolecular Engineering, Tandon School of Engineering, New York University, Brooklyn, New York 11201, United States
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3
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Liu Y, Yang J, Lawrie BJ, Kelley KP, Ziatdinov M, Kalinin SV, Ahmadi M. Disentangling Electronic Transport and Hysteresis at Individual Grain Boundaries in Hybrid Perovskites via Automated Scanning Probe Microscopy. ACS NANO 2023; 17:9647-9657. [PMID: 37155579 DOI: 10.1021/acsnano.3c03363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Underlying the rapidly increasing photovoltaic efficiency and stability of metal halide perovskites (MHPs) is the advancement in the understanding of the microstructure of polycrystalline MHP thin film. Over the past decade, intense efforts have been aimed at understanding the effect of microstructures on MHP properties, including chemical heterogeneity, strain disorder, phase impurity, etc. It has been found that grain and grain boundary (GB) are tightly related to lots of microscale and nanoscale behavior in MHP thin films. Atomic force microscopy (AFM) is widely used to observe grain and boundary structures in topography and subsequently to study the correlative surface potential and conductivity of these structures. For now, most AFM measurements have been performed in imaging mode to study the static behavior; in contrast, AFM spectroscopy mode allows us to investigate the dynamic behavior of materials, e.g., conductivity under sweeping voltage. However, a major limitation of AFM spectroscopy measurements is that they require manual operation by human operators, and as such only limited data can be obtained, hindering systematic investigations of these microstructures. In this work, we designed a workflow combining the conductive AFM measurement with a machine learning (ML) algorithm to systematically investigate grain boundaries in MHPs. The trained ML model can extract GBs locations from the topography image, and the workflow drives the AFM probe to each GB location to perform a current-voltage (IV) curve automatically. Then, we are able to have IV curves at all GB locations, allowing us to systematically understand the property of GBs. Using this method, we discovered that the GB junction points are less conductive, potentially more photoactive, and can play critical roles in MHP stability, while most previous works only focused on the difference between GB and grains.
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Affiliation(s)
- Yongtao Liu
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Jonghee Yang
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Benjamin J Lawrie
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Kyle P Kelley
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Maxim Ziatdinov
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
- Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Sergei V Kalinin
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Mahshid Ahmadi
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
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4
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Highly efficient perovskite solar cells by building 2D/3D perovskite heterojuction in situ for interfacial passivation and energy level adjustment. Sci China Chem 2023. [DOI: 10.1007/s11426-022-1436-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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5
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Lv SY, Li G, Yang LM. Prognostication of two-dimensional transition-metal atoms embedded rectangular tetrafluorotetracyanoquinodimethane single-atom catalysts for high-efficiency electrochemical nitrogen reduction. J Colloid Interface Sci 2022; 621:24-32. [DOI: 10.1016/j.jcis.2022.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 03/25/2022] [Accepted: 04/01/2022] [Indexed: 10/18/2022]
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6
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Li X, Sheng W, Duan X, Lin Z, Yang J, Tan L, Chen Y. Defect Passivation Effect of Chemical Groups on Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2022; 14:34161-34170. [PMID: 34333970 DOI: 10.1021/acsami.1c08539] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Defect passivation is a key strategy to prepare high-performance perovskite solar cells (PVSCs). Even though abundant passivation molecules have been applied, the absence of detailed researches with regard to different functional groups in polymer additives may inevitably impede the establishment of passivation molecules selection rules. In this work, three passivation molecules including poly(vinyl alcohol) (PVA), polymethyl acrylate (PMA), and poly(acrylic acid) (PAA) are employed to systematically analyze the passivation effect from hydroxyl, carbonyl, and carboxyl groups. In general, PVA (-OH) can form hydrogen bonds with perovskite and PMA (-C═O) can complex with uncoordinated Pb2+. Specifically, PAA (-COOH) can interact selectively with MA+ and I- ions via hydrogen bonding and complex with uncoordinated Pb2+ to passivate defects more effectively. Hence, the PAA-incorporated PVSCs based on MAPbI3 achieve the champion power conversion efficiency (PCE) of 20.29% with open-circuit voltage up to 1.13 V. In addition, PAA cross-linking perovskite grains can relieve mechanical stress, as well as occupy the major channels to suppress ion migration and water/oxygen erosion. The corresponding unencapsulated devices demonstrate a superior light soaking stability, retaining more than 80% of the original PCE under one sun illumination for 1000 h.
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Affiliation(s)
- Xiang Li
- College of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
- Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
| | - Wangping Sheng
- College of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
- Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
| | - Xiaopeng Duan
- College of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
- Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
| | - Zhuojia Lin
- College of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
- Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
| | - Jia Yang
- College of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
- Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
| | - Licheng Tan
- College of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
- Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
| | - Yiwang Chen
- College of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
- Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
- Institute of Advanced Scientific Research (iASR), Jiangxi Normal University, 99 Ziyang Avenue, Nanchang 330022, China
- Key Laboratory of Functional Small Molecules for Ministry of Education, Jiangxi Normal University, 99 Ziyang Avenue, Nanchang 330022, China
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7
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Lv SY, Li G, Yang LM. Transition Metals Embedded Two-Dimensional Square Tetrafluorotetracyanoquinodimethane Monolayers as a Class of Novel Electrocatalysts for Nitrogen Reduction Reaction. ACS APPLIED MATERIALS & INTERFACES 2022; 14:25317-25325. [PMID: 35608362 DOI: 10.1021/acsami.2c02677] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The combination of transition metal (TM) atoms and high electron affinity organic framework tetrafluorotetracyanoquinodimethanes (F4TCNQs) makes the TM-embedded two-dimensional (2D) square F4TCNQ monolayers (TM-sF4TCNQ) possible to have excellent characteristics of single-atom catalysts and 2D materials. For the first time, the TM-sF4TCNQ monolayers have been considered for application in the electrocatalytic nitrogen reduction reaction (eNRR) field. Through high-throughput screening, the catalytic performance of 30 TM-sF4TCNQ (TM = 3d∼5d TMs) monolayers for eNRR was comprehensively evaluated. The Mo-, Nb-, and Tc-sF4TCNQ catalysts stand out with the onset potentials of -0.18, -0.44, and -0.54 V, respectively, through the optimal reaction paths. Our work will provide guidance for the green and sustainable development of electrocatalytic nitrogen fixation.
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Affiliation(s)
- Sheng-Yao Lv
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; Hubei Engineering Research Center for Biomaterials and Medical Protective Materials; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education; Center for Computational Quantum Chemistry, School of Chemistry, South China Normal University, Guangzhou 510006, China
| | - Guoliang Li
- Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education; Center for Computational Quantum Chemistry, School of Chemistry, South China Normal University, Guangzhou 510006, China
| | - Li-Ming Yang
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; Hubei Engineering Research Center for Biomaterials and Medical Protective Materials; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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8
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Liang L, Xiong Q, Zhang Z, Yu Y, Gao P. Passivating defects via 4-cyanobenzenaminium iodide enables 22.44% efficiency perovskite solar cells. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Zhu W, Wang S, Zhang X, Wang A, Wu C, Hao F. Ion Migration in Organic-Inorganic Hybrid Perovskite Solar Cells: Current Understanding and Perspectives. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2105783. [PMID: 35038213 DOI: 10.1002/smll.202105783] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 11/29/2021] [Indexed: 06/14/2023]
Abstract
Organic-inorganic hybrid perovskite (OIHPs) solar cells are the most promising alternatives to traditional silicon solar cells, with a certified power conversion efficiency beyond 25%. However, the poor stability of OHIPs is one of the thorniest obstacles that hinder its commercial development. Among all the factors affecting stability, ion migration is prominent because it is unavoidable and intrinsic in OHIPs. Therefore, it is important to understand the mechanism for ion migration and regulation strategies. Herein, the types of ions that may migrate in OHIPs are first discussed; afterward, the migrating channels are demonstrated. The effects of ion migration are further elaborated. While ion migration can facilitate the p-i-n structure in some cases, the current hysteresis and other adverse effects such as phase segregation in OHIPs attract widespread attention. Based on these, several recent strategies to suppress the ion migration are enumerated, including the introduction of alkali cations, organic additives, grain boundaries passivation, and employment of low-dimensional perovskites. Finally, the prospect for further modulating the ion migration and more stable perovskite solar cells is proposed.
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Affiliation(s)
- Weike Zhu
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Shurong Wang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Xin Zhang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Aili Wang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Cheng Wu
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Feng Hao
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, China
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10
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Chen R, Yan Y, Tang J, Zeng H, Yao Q, Chen L, Liang Z. Efficient p‐Type Doping of Tin Halide Perovskite via Sequential Diffusion for Thermoelectrics. SMALL SCIENCE 2022. [DOI: 10.1002/smsc.202200004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Affiliation(s)
- Ruisi Chen
- Department of Materials Science Fudan University Shanghai 200433 China
| | - Yajie Yan
- Department of Materials Science Fudan University Shanghai 200433 China
| | - Junhui Tang
- Department of Materials Science Fudan University Shanghai 200433 China
| | - Huarong Zeng
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 China
| | - Qin Yao
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 China
| | - Lidong Chen
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 China
| | - Ziqi Liang
- Department of Materials Science Fudan University Shanghai 200433 China
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11
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SunLi Z, Liu Y, Li S, Ren J, Wu Y, Sun Q, Cui Y, Chen M, Hao Y. 2D Perovsktie Substrate-Assisted CsPbI 3 Film Growth for High-Efficiency Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2022; 14:7417-7427. [PMID: 35077148 DOI: 10.1021/acsami.1c20968] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
High-quality perovskite films are beneficial for fabricating perovskite solar cells (PSCs) with excellent photoelectric performance. The substrate on which the perovskite film grows plays a profound role in improving the crystallization quality of the perovskite film. Here, we proposed a novel method for optimizing CsPbI3 perovskite films, that is, two-dimensional (2D) perovskite substrate-assisted growth (2D-PSAG) method. The prepared PEA2PbI4 2D perovskite with proper wettability and roughness is used as a substrate to fabricate the high-quality CsPbI3 film. Moreover, it is found that PEA cations show a vertical gradient distribution within the whole CsPbI3 film because of their bottom-up self-diffusion. Also, PEA cations induce the moderate distortion of [PbI6]4- octahedron and slight lattice contraction of CsPbI3 by chemically bonding between Pb and N atoms. Surprisingly, the trace amounts of PEA cations lead to a bottom-up gradient phase transition from γ-CsPbI3 to β-CsPbI3. Therefore, the energy-level alignment becomes more matched at the interface of the perovskite layer/hole transport layer (poly3-hexylthiophene, P3HT), which denotes a large improvement of hole transport and extraction in PSCs made with the 2D-PSAG method. As a result, the CsPbI3-based PSCs with P3HT as a hole transport layer exhibit a champion efficiency of 17.13%, while the control device exhibits a PCE of only 14.16%. The PSCs made by the 2D-PSAG method retain above 70% of the initial PCE value after storage of 9 days in air (RH 10-20%), while the control device decomposes completely after 9 days. The improved stability could originate from the steric effects of PEA cations and the high crystallization quality of the mixed-phase CsPbI3 film. Therefore, 2D-PSAG is a novel and promising strategy to develop all-inorganic PSCs with high performance and stability.
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Affiliation(s)
- Zetong SunLi
- College of Physics and Optoelectronics, Key Lab of Advanced Transducers and Intelligent Control System, Taiyuan University of Technology, Taiyuan 030024, China
| | - Yifan Liu
- College of Physics and Optoelectronics, Key Lab of Advanced Transducers and Intelligent Control System, Taiyuan University of Technology, Taiyuan 030024, China
| | - Shiqi Li
- College of Physics and Optoelectronics, Key Lab of Advanced Transducers and Intelligent Control System, Taiyuan University of Technology, Taiyuan 030024, China
| | - Jingkun Ren
- College of Physics and Optoelectronics, Key Lab of Advanced Transducers and Intelligent Control System, Taiyuan University of Technology, Taiyuan 030024, China
| | - Yukun Wu
- College of Physics and Optoelectronics, Key Lab of Advanced Transducers and Intelligent Control System, Taiyuan University of Technology, Taiyuan 030024, China
| | - Qinjun Sun
- College of Physics and Optoelectronics, Key Lab of Advanced Transducers and Intelligent Control System, Taiyuan University of Technology, Taiyuan 030024, China
| | - Yanxia Cui
- College of Physics and Optoelectronics, Key Lab of Advanced Transducers and Intelligent Control System, Taiyuan University of Technology, Taiyuan 030024, China
| | - Ming Chen
- College of Physics and Electronics Engineering, State Key Laboratory of Quantum Optics and Quantum Optics Devices, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Yuying Hao
- College of Physics and Optoelectronics, Key Lab of Advanced Transducers and Intelligent Control System, Taiyuan University of Technology, Taiyuan 030024, China
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12
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Zhang X, Huang H, Ling X, Sun J, Jiang X, Wang Y, Xue D, Huang L, Chi L, Yuan J, Ma W. Homojunction Perovskite Quantum Dot Solar Cells with over 1 µm-Thick Photoactive Layer. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2105977. [PMID: 34695259 DOI: 10.1002/adma.202105977] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 10/19/2021] [Indexed: 05/08/2023]
Abstract
The solution-processed solar cells based on colloidal quantum dots (QDs) reported so far generally suffer from poor thickness tolerance and it is difficult for them to be compatible with large-scale solution printing technology. However, the recently emerged perovskite QDs, with unique high defect tolerance, are particularly well-suited for efficient photovoltaics. Herein, efficient CsPbI3 perovskite QD solar cells are demonstrated first with over 1 µm-thick active layer by developing an internal P/N homojunction. Specifically, an organic dopant 2,2'-(perfluoronaphthalene-2,6-diylidene) dimalononitrile (F6TCNNQ) is introduced into CsPbI3 QD arrays to prepare different carrier-type QD arrays. The detailed characterizations reveal successful charge-transfer doping of QDs and carrier-type transformation from n-type to p-type. Subsequently, the P/N homojunction perovskite QD solar cell is assembled using different carrier-type QDs, delivering an enhanced power conversion efficiency of 15.29%. Most importantly, this P/N homojunction strategy realizes remarkable thickness tolerance of QD solar cells, showing a record high efficiency of 12.28% for a 1.2 µm-thick QD active-layer and demonstrating great potential for the future printing manufacturing of QDs solar cells.
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Affiliation(s)
- Xuliang Zhang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P. R. China
| | - Hehe Huang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P. R. China
| | - Xufeng Ling
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P. R. China
| | - Jianguo Sun
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P. R. China
| | - Xingyu Jiang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P. R. China
| | - Yao Wang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P. R. China
| | - Di Xue
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P. R. China
| | - Lizhen Huang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P. R. China
| | - Lifeng Chi
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P. R. China
| | - Jianyu Yuan
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P. R. China
| | - Wanli Ma
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P. R. China
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13
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Wang H, Zhang C, Huang W, Zou X, Chen Z, Sun S, Zhang L, Li J, Cheng J, Huang S, Gu M, Chen X, Guo X, Gui R, Wang W. Research progress of ABX 3-type lead-free perovskites for optoelectronic applications: materials and devices. Phys Chem Chem Phys 2022; 24:27585-27605. [DOI: 10.1039/d2cp02451a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
We summarize the development and application of ABX3-type lead-free halide perovskite materials, especially in optoelectronic devices.
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Affiliation(s)
- Hao Wang
- Beijing Key Laboratory for Sensor, Beijing Information Science and Technology University, Beijing 100101, China
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Information Science and Technology University, Beijing 100101, China
- School of Applied Science, Beijing Information Science and Technology University, Beijing 100101, China
| | - Chunqian Zhang
- Beijing Key Laboratory for Sensor, Beijing Information Science and Technology University, Beijing 100101, China
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Information Science and Technology University, Beijing 100101, China
- School of Applied Science, Beijing Information Science and Technology University, Beijing 100101, China
| | - Wenqi Huang
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Information Science and Technology University, Beijing 100101, China
- School of Applied Science, Beijing Information Science and Technology University, Beijing 100101, China
| | - Xiaoping Zou
- Beijing Key Laboratory for Sensor, Beijing Information Science and Technology University, Beijing 100101, China
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Information Science and Technology University, Beijing 100101, China
- School of Applied Science, Beijing Information Science and Technology University, Beijing 100101, China
| | - Zhenyu Chen
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Information Science and Technology University, Beijing 100101, China
- School of Applied Science, Beijing Information Science and Technology University, Beijing 100101, China
| | - Shengliu Sun
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Information Science and Technology University, Beijing 100101, China
- School of Applied Science, Beijing Information Science and Technology University, Beijing 100101, China
| | - Lixin Zhang
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Information Science and Technology University, Beijing 100101, China
- School of Applied Science, Beijing Information Science and Technology University, Beijing 100101, China
| | - Junming Li
- Beijing Key Laboratory for Sensor, Beijing Information Science and Technology University, Beijing 100101, China
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Information Science and Technology University, Beijing 100101, China
- School of Applied Science, Beijing Information Science and Technology University, Beijing 100101, China
| | - Jin Cheng
- Beijing Key Laboratory for Sensor, Beijing Information Science and Technology University, Beijing 100101, China
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Information Science and Technology University, Beijing 100101, China
- School of Applied Science, Beijing Information Science and Technology University, Beijing 100101, China
| | - Shixian Huang
- Beijing Key Laboratory for Sensor, Beijing Information Science and Technology University, Beijing 100101, China
| | - Mingkai Gu
- Beijing Key Laboratory for Sensor, Beijing Information Science and Technology University, Beijing 100101, China
| | - Xinyao Chen
- Beijing Key Laboratory for Sensor, Beijing Information Science and Technology University, Beijing 100101, China
| | - Xin Guo
- Beijing Key Laboratory for Sensor, Beijing Information Science and Technology University, Beijing 100101, China
| | - Ruoxia Gui
- Beijing Key Laboratory for Sensor, Beijing Information Science and Technology University, Beijing 100101, China
| | - Weimin Wang
- Beijing Key Laboratory for Sensor, Beijing Information Science and Technology University, Beijing 100101, China
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14
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Pshenichnyuk SA, Modelli A, Asfandiarov NL, Rakhmeyev RG, Safronov AM, Tayupov MM, Komolov AS. Microsecond dynamics of molecular negative ions formed by low-energy electron attachment to fluorinated tetracyanoquinodimethane. J Chem Phys 2021; 155:184301. [PMID: 34773960 DOI: 10.1063/5.0072264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Low-energy (0-15 eV) electron interactions with gas-phase 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ) molecules are studied under single collision conditions using dissociative electron attachment spectroscopy. The experimental findings are supported by density functional theory calculations of the virtual orbital energies and energetics of the dissociative decays. Long-lived molecular negative ions F4-TCNQ- are detected in a wide electron energy range (0-3 eV) with electron detachment times in the range of milliseconds. Although plenty of decay channels are observed, their intensities are found to be very small (two to four orders of magnitude relative to the F4-TCNQ- signal). These findings prove that the structure of this strong electron-accepting molecule bearing an excess electron is robust in its electronic ground state, even when highly (up to 6 eV) vibrationally excited. As many as nine metastable fragment anions formed slowly (in the 16-23 µs range) are found in the negative ion mass spectrum of F4-TCNQ, as never observed before in compounds possessing high electron-accepting ability. The present results shed some light on microsecond dynamics of isolated F4-TCNQ molecules under conditions of excess negative charge, which are important for understanding the functionality of nanoscale devices containing this molecule as a structural element.
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Affiliation(s)
- Stanislav A Pshenichnyuk
- Institute of Molecule and Crystal Physics, Ufa Federal Research Centre, Russian Academy of Sciences, Prospekt Oktyabrya 151, 450075 Ufa, Russia
| | - Alberto Modelli
- Università di Bologna, Centro Interdipartimentale di Ricerca in Scienze Ambientali, via S. Alberto 163, 48123 Ravenna, Italy
| | - Nail L Asfandiarov
- Institute of Molecule and Crystal Physics, Ufa Federal Research Centre, Russian Academy of Sciences, Prospekt Oktyabrya 151, 450075 Ufa, Russia
| | - Rustam G Rakhmeyev
- Institute of Molecule and Crystal Physics, Ufa Federal Research Centre, Russian Academy of Sciences, Prospekt Oktyabrya 151, 450075 Ufa, Russia
| | - Aleksey M Safronov
- Institute of Molecule and Crystal Physics, Ufa Federal Research Centre, Russian Academy of Sciences, Prospekt Oktyabrya 151, 450075 Ufa, Russia
| | - Mansaf M Tayupov
- Institute of Molecule and Crystal Physics, Ufa Federal Research Centre, Russian Academy of Sciences, Prospekt Oktyabrya 151, 450075 Ufa, Russia
| | - Alexei S Komolov
- St. Petersburg State University, Universitetskaya nab. 7/9, 199034 St. Petersburg, Russia
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15
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Tao J, Wang Z, Wang H, Shen J, Liu X, Xue J, Guo H, Fu G, Kong W, Yang S. Additive Engineering for Efficient and Stable MAPbI 3-Perovskite Solar Cells with an Efficiency of over 21. ACS APPLIED MATERIALS & INTERFACES 2021; 13:44451-44459. [PMID: 34506105 DOI: 10.1021/acsami.1c13136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The high density of defects in MAPbI3 perovskite films brings about severe carrier nonradiative recombination loss, which lowers the performance of MAPbI3-based perovskite solar cells (PSCs). Here, methylamine cyanate (MAOCN) molecules were introduced into MAPbI3 solutions to manipulate the crystallizatsion of the MAPbI3 films. MAOCN molecules can slow down the volatilization rate of the solvent and delay the crystallization process of the MAPbI3 film. The crystal quality of the MAPbI3 films is effectively optimized without an additive residue. Perovskite films treated by MAOCN have lower defect density and longer carrier lifetime, which lowers the carrier recombination loss. Meanwhile, the MAPbI3 film based on MAOCN has a more hydrophobic surface. The final MAPbI3-based device efficiency reached 21.28% (VOC = 1.126 V, JSC = 23.29 mA/cm2, and FF = 81.13). After 30 days of storage under atmospheric conditions, the efficiency of unencapsulated MAOCN-based PSCs only dropped by about 5%.
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Affiliation(s)
- Junlei Tao
- Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
- National-Local Joint Engineering Laboratory of New Energy Photoelectric Devices, College of Physics Science and Technology, Hebei University, Baoding 071002, China
- Institute of Life Science and Green Development, Hebei University, Baoding 071002, China
- State Key Laboratory of Photovoltaic Materials & Technology, Yingli Solar, Baoding 071051, China
| | - Zhiwen Wang
- Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Hongwei Wang
- Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Jinliang Shen
- Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Xiaoni Liu
- Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Jingwei Xue
- Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Hansong Guo
- Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Guangsheng Fu
- Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Weiguang Kong
- Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Shaopeng Yang
- Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
- National-Local Joint Engineering Laboratory of New Energy Photoelectric Devices, College of Physics Science and Technology, Hebei University, Baoding 071002, China
- Institute of Life Science and Green Development, Hebei University, Baoding 071002, China
- State Key Laboratory of Photovoltaic Materials & Technology, Yingli Solar, Baoding 071051, China
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16
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Xie L, Xie J, Wang S, Chen B, Yang C, Wang Z, Liu X, Chen J, Jia K, Hao F. Fluorinated Oligomer Wrapped Perovskite Crystals for Inverted MAPbI 3 Solar Cells with 21% Efficiency and Enhanced Stability. ACS APPLIED MATERIALS & INTERFACES 2021; 13:26093-26101. [PMID: 34053218 DOI: 10.1021/acsami.1c06216] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Defects at the grain boundary provide sites for nonradiative recombination in halide perovskite solar cells (PSCs). Here, by polymerization and fluorination of a Lewis acid of 4,4-bis(4-hydroxyphenyl)pentanoic acid, a fluorinated oligomer (FO-19) is synthesized and applied to passivate these defects in methlyammonium lead iodide (MAPbI3). It is demonstrated that the carboxyl bond of FO-19 was coordinated with Pb ions in the perovskite films to achieve a wrapping effect on the perovskite crystals. The defects of perovskite film are effectively passivated, and the undesirable nonradiative recombination is greatly inhibited. As a result, FO-19 gives a power conversion efficiency of 21.23% for the inverted MAPbI3-based PSCs, which is among the highest reported values in the literature. Meanwhile, the corresponding device with FO-19 exhibits significantly improved humidity and thermal stability. Therefore, this work offers insights into the realization of high-efficiency and stable PSCs through fluorinated additive engineering.
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Affiliation(s)
- Lisha Xie
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Junni Xie
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Shurong Wang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Bin Chen
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Chenguang Yang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
- Faculty of Printing, Packaging and Digital Media Technology, Xi'an University of Technology, Xi'an 710048, Shanxi, P. R. China
| | - Zhen Wang
- Faculty of Printing, Packaging and Digital Media Technology, Xi'an University of Technology, Xi'an 710048, Shanxi, P. R. China
| | - Xiaobo Liu
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Jiangzhao Chen
- Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education), College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
| | - Kun Jia
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Feng Hao
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
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17
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Nah Y, Allam O, Kim HS, Choi JI, Kim IS, Byun J, Kim SO, Jang SS, Kim DH. Spectral Instability of Layered Mixed Halide Perovskites Results from Anion Phase Redistribution and Selective Hole Injection. ACS NANO 2021; 15:1486-1496. [PMID: 33382600 DOI: 10.1021/acsnano.0c08897] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Despite the ability to precisely tune their bandgap energies, mixed halide perovskites (MHPs) suffer from significant spectral instability, which obstructs their utilization for the rational design of light-emitting diodes. Here, we investigate the origin of the electroluminescence peak shifts in layered MHPs containing bromide and iodide. X-ray diffraction and steady-state absorption measurements prove effective integration of iodide into the cubic lattice and the spatially uniform distribution of halides in the ambient environment. However, the applied electric field during the device operation is found to drive the systematic halide migration. Quantum mechanical density functional theory calculations reveal that the different activation energies required for directional ion hopping lead to the redistribution of anions. In-depth analyses of the electroluminescence spectra indicate that the spectral shifting rate is dependent on the drift velocity of halides. Finally, it is suggested from our study that the dominant red emission is ascribed to the thermodynamically favorable selective hole injection. Our mechanistic study provides insights into the fundamental reason for the spectral instability of devices based on MHPs.
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Affiliation(s)
- Yoonseo Nah
- Division of Chemical Engineering and Materials Science, College of Engineering, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea
| | - Omar Allam
- The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 801 Ferst Drive, Atlanta, Georgia 30332-0405, United States
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia 30332-0245, United States
| | - Han Seul Kim
- Center for Supercomputing Applications, National Institute of Supercomputing and Networking, Korea Institute of Science and Technology Information, Daejeon 34141, Republic of Korea
| | - Ji Il Choi
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia 30332-0245, United States
| | - In Soo Kim
- Nanophotonics Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Jinwoo Byun
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
- National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - Sang Ouk Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
- National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - Seung Soon Jang
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia 30332-0245, United States
| | - Dong Ha Kim
- Division of Chemical Engineering and Materials Science, College of Engineering, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea
- Department of Chemistry and Nano Science, Division of Molecular and Life Sciences, College of Natural Sciences, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea
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18
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Zhao Y, Zhou W, Han Z, Yu D, Zhao Q. Effects of ion migration and improvement strategies for the operational stability of perovskite solar cells. Phys Chem Chem Phys 2021; 23:94-106. [PMID: 33325463 DOI: 10.1039/d0cp04418k] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The fundamental factor affecting the stability of perovskite solar cells, ion migration, has been reviewed, which is found to be closely related to the degradation of perovskite solar cells. Characterization methods like impedance spectroscopy and galvanostatic measurement to identify ion migration in perovskite films have been reviewed. The influence of light on ion migration was further discussed, which could largely explain the photo-stability decay in most perovskite solar cells. Finally, several solutions to inhibit ion migration for better operational stability of perovskite solar cells were summarized, including bulk passivation, interface passivation and grain boundary passivation. Several strategies have also been proposed to further improve the stablity of perovskite solar cells.
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Affiliation(s)
- Yao Zhao
- State Key Lab for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, 100871, China.
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19
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Liu GZ, Du CS, Wu JY, Liu BT, Wu TM, Huang CF, Lee RH. Enhanced Photovoltaic Properties of Perovskite Solar Cells by Employing Bathocuproine/Hydrophobic Polymer Films as Hole-Blocking/Electron-Transporting Interfacial Layers. Polymers (Basel) 2020; 13:E42. [PMID: 33374344 PMCID: PMC7795380 DOI: 10.3390/polym13010042] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 12/20/2020] [Accepted: 12/22/2020] [Indexed: 11/16/2022] Open
Abstract
In this study, we improved the photovoltaic (PV) properties and storage stabilities of inverted perovskite solar cells (PVSCs) based on methylammonium lead iodide (MAPbI3) by employing bathocuproine (BCP)/poly(methyl methacrylate) (PMMA) and BCP/polyvinylpyrrolidone (PVP) as hole-blocking and electron-transporting interfacial layers. The architecture of the PVSCs was indium tin oxide/poly(3,4-ethylenedioxythiophene):polystyrenesulfonate/MAPbI3/[6,6]-phenyl-C61-butyric acid methyl ester/BCP based interfacial layer/Ag. The presence of PMMA and PVP affected the morphological stability of the BCP and MAPbI3 layers. The storage-stability of the BCP/PMMA-based PVSCs was enhanced significantly relative to that of the corresponding unmodified BCP-based PVSC. Moreover, the PV performance of the BCP/PVP-based PVSCs was enhanced when compared with that of the unmodified BCP-based PVSC. Thus, incorporating hydrophobic polymers into BCP-based hole-blocking/electron-transporting interfacial layers can improve the PV performance and storage stability of PVSCs.
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Affiliation(s)
- Guan-Zhi Liu
- Department of Chemical Engineering, National Chung Hsing University, Taichung 402, Taiwan; (G.-Z.L.); (C.-S.D.); (J.-Y.W.); (C.-F.H.)
| | - Chi-Shiuan Du
- Department of Chemical Engineering, National Chung Hsing University, Taichung 402, Taiwan; (G.-Z.L.); (C.-S.D.); (J.-Y.W.); (C.-F.H.)
| | - Jeng-Yue Wu
- Department of Chemical Engineering, National Chung Hsing University, Taichung 402, Taiwan; (G.-Z.L.); (C.-S.D.); (J.-Y.W.); (C.-F.H.)
| | - Bo-Tau Liu
- Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Yunlin 64002, Taiwan
| | - Tzong-Ming Wu
- Department of Materials Science and Engineering, National Chung Hsing University, Taichung 402, Taiwan;
| | - Chih-Feng Huang
- Department of Chemical Engineering, National Chung Hsing University, Taichung 402, Taiwan; (G.-Z.L.); (C.-S.D.); (J.-Y.W.); (C.-F.H.)
| | - Rong-Ho Lee
- Department of Chemical Engineering, National Chung Hsing University, Taichung 402, Taiwan; (G.-Z.L.); (C.-S.D.); (J.-Y.W.); (C.-F.H.)
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20
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Azam M, Yue S, Xu R, Yang S, Liu K, Huang Y, Sun Y, Hassan A, Ren K, Tan F, Wang Z, Lei Y, Qu S, Wang Z. Realization of Moisture-Resistive Perovskite Films for Highly Efficient Solar Cells Using Molecule Incorporation. ACS APPLIED MATERIALS & INTERFACES 2020; 12:39063-39073. [PMID: 32805927 DOI: 10.1021/acsami.0c09046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The development of highly crystalline perovskite films with large crystal grains and few surface defects is attractive to obtain high-performance perovskite solar cells (PSCs) with good device stability. Herein, we simultaneously improve the power conversion efficiency (PCE) and humid stability of the CH3NH3PbI3 (CH3NH3 = MA) device by incorporating small organic molecule IT-4F into the perovskite film and using a buffer layer of PFN-Br. The presence of IT-4F in the perovskite film can successfully improve crystallinity and enhance the grain size, leading to reduced trap states and longer lifetime of the charge carrier, and make the perovskite film hydrophobic. Meanwhile, as a buffer layer, PFN-Br can accelerate the separation of excitons and promote the transfer process of electrons from the active layer to the cathode. As a consequence, the PSCs exhibit a remarkably improved PCE of 20.55% with reduced device hysteresis. Moreover, the moisture-resistive film-based devices retain about 80% of their initial efficiency after 30 days of storage in relative humidity of 10-30% without encapsulation.
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Affiliation(s)
- Muhammad Azam
- Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
- Shenzhen Key Laboratory of Advanced Thin Films and Applications, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, P. R. China
| | - Shizhong Yue
- Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rui Xu
- Institut für Physik & IMN MacroNano@ (ZIK), Technische Universität Ilmenau, Ilmenau 98693, Germany
| | - Shuaijian Yang
- Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Kong Liu
- Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yanbin Huang
- Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yang Sun
- Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ali Hassan
- Key Laboratory of Optoelectronic Devices and Systems of Guangdong Province & Ministry of Education, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Kuankuan Ren
- Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Furui Tan
- Key Laboratory of Photovoltaic Materials, Department of Physics and Electronics, Henan University, Henan 475004, China
| | - Zhijie Wang
- Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yong Lei
- Institut für Physik & IMN MacroNano@ (ZIK), Technische Universität Ilmenau, Ilmenau 98693, Germany
| | - Shengchun Qu
- Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhanguo Wang
- Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
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21
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Zhu H, Liu A, Shim KI, Hong J, Han JW, Noh YY. High-Performance and Reliable Lead-Free Layered-Perovskite Transistors. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2002717. [PMID: 32584475 DOI: 10.1002/adma.202002717] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 06/13/2020] [Indexed: 06/11/2023]
Abstract
Perovskites have been intensively investigated for their use in solar cells and light-emitting diodes. However, research on their applications in thin-film transistors (TFTs) has drawn less attention despite their high intrinsic charge carrier mobility. In this study, the universal approaches for high-performance and reliable p-channel lead-free phenethylammonium tin iodide TFTs are reported. These include self-passivation for grain boundary by excess phenethylammonium iodide, grain crystallization control by adduct, and iodide vacancy passivation through oxygen treatment. It is found that the grain boundary passivation can increase TFT reproducibility and reliability, and the grain size enlargement can hike the TFT performance, thus, enabling the first perovskite-based complementary inverter demonstration with n-channel indium gallium zinc oxide TFTs. The inverter exhibits a high gain over 30 with an excellent noise margin. This work aims to provide widely applicable and repeatable methods to make the gate more open for intensive efforts toward high-performance printed perovskite TFTs.
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Affiliation(s)
- Huihui Zhu
- Department of Chemical Engineering, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-Gu, Pohang, 37673, Republic of Korea
| | - Ao Liu
- Department of Chemical Engineering, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-Gu, Pohang, 37673, Republic of Korea
| | - Kyu In Shim
- Department of Chemical Engineering and School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-Gu, Pohang, 37673, Republic of Korea
| | - Jisu Hong
- Department of Chemical Engineering, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-Gu, Pohang, 37673, Republic of Korea
| | - Jeong Woo Han
- Department of Chemical Engineering and School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-Gu, Pohang, 37673, Republic of Korea
| | - Yong-Young Noh
- Department of Chemical Engineering, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-Gu, Pohang, 37673, Republic of Korea
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Nitrobenzene as Additive to Improve Reproducibility and Degradation Resistance of Highly Efficient Methylammonium-Free Inverted Perovskite Solar Cells. MATERIALS 2020; 13:ma13153289. [PMID: 32718083 PMCID: PMC7435988 DOI: 10.3390/ma13153289] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 07/20/2020] [Accepted: 07/21/2020] [Indexed: 11/17/2022]
Abstract
We show that the addition of 1% (v/v) nitrobenzene within the perovskite formulation can be used as a method to improve the power conversion efficiency and reliability performance of methylammonium-free (CsFA) inverted perovskite solar cells. The addition of nitrobenzene increased power conversion efficiency (PCE) owing to defect passivation and provided smoother films, resulting in hybrid perovskite solar cells (PVSCs) with a narrower PCE distribution. Moreover, the nitrobenzene additive methylammonium-free hybrid PVSCs exhibit a prolonged lifetime compared with additive-free PVSCs owing to enhanced air and moisture degradation resistance.
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Dendritic PAMAM polymers for strong perovskite intergranular interaction enhancing power conversion efficiency and stability of perovskite solar cells. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136387] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Arivazhagan V, Hang P, Parvathi MM, Tang Z, Khan A, Yang D, Yu X. All-vacuum deposited and thermally stable perovskite solar cells with F4-TCNQ/CuPc hole transport layer. NANOTECHNOLOGY 2020; 31:065401. [PMID: 31627206 DOI: 10.1088/1361-6528/ab4f2a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Hole transporting layers (HTLs) play a crucial role in the realization of efficient and stable perovskite solar cells (PSCs). Copper phthalocyanine (CuPc) is a promising HTL owing to its thermal stability and favorable band alignment with the perovskite absorber. However, the power conversion efficiency (PCE) of PSCs with a CuPc HTL is still lagging behind highly efficient solar cells. Herein, a p-type tetrafluoro-tetracyanoquinodimethane (F4-TCNQ) is employed as an interlayer between the perovskite and CuPc HTL in all-vacuum deposited PSCs. The F4-TCNQ interlayer improves the conductivity of both MAPbI3 and CuPc, reduces the shunt pathway and facilitates an efficient photoexcited holes transfer from the valance band of the MAPbI3 to the LUMO of the F4-TCNQ. Consequently, the best solar cell device with an F4-TCNQ interlayer achieved a PCE of 13.03% with a remarkable improvement in fill factor. Moreover, the device showed superior stability against thermal stress at 85 °C over 250 h and retained ∼95% of its initial efficiency. This work demonstrates a significant step towards all-vacuum deposited perovskite solar cells with high thermal stability.
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Affiliation(s)
- V Arivazhagan
- State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
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Kwon H, Lim JW, Han J, Quan LN, Kim D, Shin ES, Kim E, Kim DW, Noh YY, Chung I, Kim DH. Towards efficient and stable perovskite solar cells employing non-hygroscopic F4-TCNQ doped TFB as the hole-transporting material. NANOSCALE 2019; 11:19586-19594. [PMID: 31633140 DOI: 10.1039/c9nr05719f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Designing an efficient and stable hole transport layer (HTL) material is one of the essential ways to improve the performance of organic-inorganic perovskite solar cells (PSCs). Herein, for the first time, an efficient model of a hole transport material (HTM) is demonstrated by optimized doping of a conjugated polymer TFB (poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(4,4'-(N-(4-sec-butylphenyl)diphenylamine)]) with a non-hygroscopic p-type dopant F4-TCNQ (2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane) for high-efficiency PSCs. The PSC with the F4-TCNQ doped TFB exhibits the best power conversion efficiency (PCE) of 17.46%, which surpasses that of the reference devices, i.e., 16.64 (LiTFSI + TBP-doped Spiro-OMeTAD as the HTM) and 11.01% (LiTFSI + TBP-doped TFB as the HTM). F4-TCNQ doped TFB was believed to favor efficient charge and energy transfer between the perovskite and the hole transport layer and to reduce charge recombination as evidenced by steady-state photoluminescence (PL) and time-resolved photoluminescence (TRPL) analysis. Moreover, the hydrophobic nature of F4-TCNQ contributed to enhancing the stability of the device under ambient conditions with a RH of 45%. The device reported herein retained ca. 80% of its initial efficiency after 10 days, significantly superior to both LiTFSI + TBP-doped Spiro-OMeTAD (ca. 30%) and LiTFSI + TBP-doped TFB (ca. 10%) based counterparts. This simple yet novel strategy paves the way for demonstrating a promising route for a wide range of highly efficient solar cells and other photovoltaic applications.
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Affiliation(s)
- Hannah Kwon
- Department of Chemistry and Nano Science, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea.
| | - Ju Won Lim
- Department of Chemistry and Nano Science, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea. and Department of Materials Science and Engineering, University of Michigan, Ann Arbor, 48109, USA
| | - Jinyoung Han
- Department of Chemistry and Nano Science, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea.
| | - Li Na Quan
- Department of Chemistry, University of California, Berkeley, California 94720, USA
| | - Dawoon Kim
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Eun-Sol Shin
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Eunah Kim
- Department of Physics, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea
| | - Dong-Wook Kim
- Department of Physics, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea
| | - Yong-Young Noh
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 37673, Republic of Korea
| | - In Chung
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Dong Ha Kim
- Department of Chemistry and Nano Science, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea. and Division of Chemical Engineering and Materials Science, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea
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26
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Chen J, Park NG. Causes and Solutions of Recombination in Perovskite Solar Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1803019. [PMID: 30230045 DOI: 10.1002/adma.201803019] [Citation(s) in RCA: 143] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 07/10/2018] [Indexed: 05/20/2023]
Abstract
Organic-inorganic hybrid perovskite materials are receiving increasing attention and becoming star materials on account of their unique and intriguing optical and electrical properties, such as high molar extinction coefficient, wide absorption spectrum, low excitonic binding energy, ambipolar carrier transport property, long carrier diffusion length, and high defects tolerance. Although a high power conversion efficiency (PCE) of up to 22.7% is certified for perovskite solar cells (PSCs), it is still far from the theoretical Shockley-Queisser limit efficiency (30.5%). Obviously, trap-assisted nonradiative (also called Shockley-Read-Hall, SRH) recombination in perovskite films and interface recombination should be mainly responsible for the above efficiency distance. Here, recent research advancements in suppressing bulk SRH recombination and interface recombination are systematically investigated. For reducing SRH recombination in the films, engineering perovskite composition, additives, dimensionality, grain orientation, nonstoichiometric approach, precursor solution, and post-treatment are explored. The focus herein is on the recombination at perovskite/electron-transporting material and perovskite/hole-transporting material interfaces in normal or inverted PSCs. Strategies for suppressing bulk and interface recombination are described. Additionally, the effect of trap-assisted nonradiative recombination on hysteresis and stability of PSCs is discussed. Finally, possible solutions and reasonable prospects for suppressing recombination losses are presented.
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Affiliation(s)
- Jiangzhao Chen
- School of Chemical Engineering, Sungkyunkwan Univeristy (SKKU), Suwon, 440-746, Korea
| | - Nam-Gyu Park
- School of Chemical Engineering, Sungkyunkwan Univeristy (SKKU), Suwon, 440-746, Korea
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Li H, Xia Y, Wang C, Wang G, Chen Y, Guo L, Luo D, Wen S. High-Efficiency and Stable Perovskite Solar Cells Prepared Using Chlorobenzene/Acetonitrile Antisolvent. ACS APPLIED MATERIALS & INTERFACES 2019; 11:34989-34996. [PMID: 31487453 DOI: 10.1021/acsami.9b12323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Preparing high-quality perovskite film with large grain size and fewer trap states is of vital importance in boosting the efficiency and stability of perovskite solar cells (PSCs). However, it is still difficult to obtain perfect MAPbI3 films by antisolvent treatment so far because of the small grain size, pinholes, and numerous defects in perovskite layers. Herein, acetonitrile (ACN) was introduced into chlorobenzene (CB) antisolvent to modify the MAPbI3 active layer. The results show that the ACN could control the ratio of the DMSO in MAI-PbI2-DMSO intermediate phase film effectively and thus manipulate the formation of MAPbI3 film. Relatively high-quality perovskite films with larger grain size were obtained when we added 6% v/v ACN into CB antisolvent. Based on the ACN-modified MAPbI3 film, the n-i-p planar device with the structure of FTO/SnO2/MAPbI3/spiro-OMeTAD/Ag yields the best power conversion efficiency (PCE) of 18.9%. It exhibited an enhancement of 16.6% in efficiency compared with the PCE of 16.2% for the control device. In addition, the device based on ACN-modified MAPbI3 also presents improved stability in air atmosphere.
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Affiliation(s)
- Huayang Li
- State Key Laboratory on Integrated Optoelectronics and College of Electronic Science & Engineering , Jilin University , 2699 Qianjin Street , Changchun 130012 , P. R. China
| | - Yiqiu Xia
- State Key Laboratory on Integrated Optoelectronics and College of Electronic Science & Engineering , Jilin University , 2699 Qianjin Street , Changchun 130012 , P. R. China
| | - Chen Wang
- State Key Laboratory on Integrated Optoelectronics and College of Electronic Science & Engineering , Jilin University , 2699 Qianjin Street , Changchun 130012 , P. R. China
| | - Ge Wang
- State Key Laboratory on Integrated Optoelectronics and College of Electronic Science & Engineering , Jilin University , 2699 Qianjin Street , Changchun 130012 , P. R. China
| | - Yi Chen
- State Key Laboratory on Integrated Optoelectronics and College of Electronic Science & Engineering , Jilin University , 2699 Qianjin Street , Changchun 130012 , P. R. China
| | - Liuxing Guo
- State Key Laboratory on Integrated Optoelectronics and College of Electronic Science & Engineering , Jilin University , 2699 Qianjin Street , Changchun 130012 , P. R. China
| | - Dongxu Luo
- State Key Laboratory on Integrated Optoelectronics and College of Electronic Science & Engineering , Jilin University , 2699 Qianjin Street , Changchun 130012 , P. R. China
| | - Shanpeng Wen
- State Key Laboratory on Integrated Optoelectronics and College of Electronic Science & Engineering , Jilin University , 2699 Qianjin Street , Changchun 130012 , P. R. China
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28
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Fu Q, Xiao S, Tang X, Chen Y, Hu T. Amphiphilic Fullerenes Employed to Improve the Quality of Perovskite Films and the Stability of Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2019; 11:24782-24788. [PMID: 31241891 DOI: 10.1021/acsami.9b07149] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Fullerene end-capped polyethylene glycol (C60-PEG) was introduced via an antisolvent method to fabricate the perovskite films. C60-PEG could enlarge the perovskite crystal size and passivate the defects of perovskite films, facilitating the carrier transport and hindering the carrier recombination. In consequence, the superior optoelectronic properties were attained with an improved power conversion efficiency of 17.71% for the perovskite device with C60-PEG treatment. Meanwhile, amphiphilic C60-PEG enhanced the resistance of perovskite films to moisture. After 40 days, the C60-PEG-based devices without encapsulation remained 93 and 86% of the original power conversion efficiency value under nitrogen and ambient conditions (25 °C temperature, 60% humidity), respectively.
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29
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Gaulding EA, Hao J, Kang HS, Miller EM, Habisreutinger SN, Zhao Q, Hazarika A, Sercel PC, Luther JM, Blackburn JL. Conductivity Tuning via Doping with Electron Donating and Withdrawing Molecules in Perovskite CsPbI 3 Nanocrystal Films. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1902250. [PMID: 31074911 DOI: 10.1002/adma.201902250] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Indexed: 05/03/2023]
Abstract
Doping of semiconductors enables fine control over the excess charge carriers, and thus the overall electronic properties, crucial to many technologies. Controlled doping in lead-halide perovskite semiconductors has thus far proven to be difficult. However, lower dimensional perovskites such as nanocrystals, with their high surface-area-to-volume ratio, are particularly well-suited for doping via ground-state molecular charge transfer. Here, the tunability of the electronic properties of perovskite nanocrystal arrays is detailed using physically adsorbed molecular dopants. Incorporation of the dopant molecules into electronically coupled CsPbI3 nanocrystal arrays is confirmed via infrared and photoelectron spectroscopies. Untreated CsPbI3 nanocrystal films are found to be slightly p-type with increasing conductivity achieved by incorporating the electron-accepting dopant 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4 TCNQ) and decreasing conductivity for the electron-donating dopant benzyl viologen. Time-resolved spectroscopic measurements reveal the time scales of Auger-mediated recombination in the presence of excess electrons or holes. Microwave conductance and field-effect transistor measurements demonstrate that both the local and long-range hole mobility are improved by F4 TCNQ doping of the nanocrystal arrays. The improved hole mobility in photoexcited p-type arrays leads to a pronounced enhancement in phototransistors.
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Affiliation(s)
| | - Ji Hao
- National Renewable Energy Laboratory, Golden, CO, 80401, USA
| | - Hyun Suk Kang
- National Renewable Energy Laboratory, Golden, CO, 80401, USA
| | - Elisa M Miller
- National Renewable Energy Laboratory, Golden, CO, 80401, USA
| | | | - Qian Zhao
- National Renewable Energy Laboratory, Golden, CO, 80401, USA
- College of Chemistry, Nankai University, Tianjin, 300071, China
| | | | - Peter C Sercel
- Department of Applied Physics and Materials Science, California Institute of Technology, Pasadena, CA, 91125, USA
| | - Joseph M Luther
- National Renewable Energy Laboratory, Golden, CO, 80401, USA
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30
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Wang Y, Fang WH, Long R, Prezhdo OV. Symmetry Breaking at MAPbI 3 Perovskite Grain Boundaries Suppresses Charge Recombination: Time-Domain ab Initio Analysis. J Phys Chem Lett 2019; 10:1617-1623. [PMID: 30892907 DOI: 10.1021/acs.jpclett.9b00763] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The influence of grain boundaries (GBs) on charge carrier lifetimes in methylammonium lead triiodide perovskite (MAPbI3) remains unclear. Some experiments suggest that GBs promote rapid nonradiative decay and deteriorate device performance, while other measurements indicate that charge recombination happens primarily in non-GB regions and that GBs facilitate charge separation and collection. By combining time-domain density functional theory and nonadiabatic (NA) molecular dynamics, we demonstrate that charge separation and localization happening at MAPbI3 GBs due to symmetry breaking suppresses charge recombination. Even though GBs lower the MAPbI3 bandgap and charge localization enhances interactions with phonons, electron-hole separation decreases the NA coupling, and the excited state lifetime remains virtually unchanged compared to the pristine perovskite. Our study rationalizes how GBs can have a positive influence on perovskite optoelectronic properties and advances fundamental understanding of charge carrier dynamics in these fascinating materials.
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Affiliation(s)
- Yutong Wang
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education , Beijing Normal University , Beijing 100875 , P. R. China
| | - Wei-Hai Fang
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education , Beijing Normal University , Beijing 100875 , P. R. China
| | - Run Long
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education , Beijing Normal University , Beijing 100875 , P. R. China
| | - Oleg V Prezhdo
- Department of Chemistry , University of Southern California , Los Angeles , California 90089 , United States
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31
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Wang Z, Pradhan A, Kamarudin MA, Pandey M, Pandey SS, Zhang P, Ng CH, Tripathi ASM, Ma T, Hayase S. Passivation of Grain Boundary by Squaraine Zwitterions for Defect Passivation and Efficient Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2019; 11:10012-10020. [PMID: 30775904 DOI: 10.1021/acsami.8b22044] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Unavoidable defects in grain boundaries (GBs) are detrimental and critically influence the organometal halide perovskite performance and stability. To address this issue, semiconducting molecules have been employed to passivate traps along perovskite GBs. Here, we designed and synthesized three squaraine molecules (SQ) with zwitterionic structure to interact with under-coordinated Pb2+ and passivate Pb-I antisite defects. Density functional theory calculation shows symmetric O atoms could coordinate with perovskite grains simultaneously, resulting in continuous charge distribution at the SQ-perovskite interface. The energetic traps distribution in CH3NH3PbI3 perovskite is influenced significantly by the interaction between SQ and perovskite as analyzed by thermally stimulated current, in which the deep-level defects are considerably reduced due to efficient SQ passivation. In addition, we explore how SQ molecules with different energy offset affect the charge extraction, which is suggested to facilitate exciton separation at the perovskite-SQ interface. These benefits lead to enhanced perovskite efficiency from 15.77 to 18.83% with the fill factor approaching 80%, which is among the highest efficiency reported for MAPbI3 solar cells fabricated in an ambient environment at 60% relative humidity (RH). Considerable retardation of perovskite device degradation was achieved, retaining 90% of initial efficiency when kept 600 h at 60 ± 5% RH.
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Affiliation(s)
- Zhen Wang
- Department of Life Science and Systems Engineering , Kyushu Institute of Technology , 2-4 Hibikino , Wakamatsu-ku, Kitakyushu , Fukuoka 808-0196 , Japan
| | - Anusha Pradhan
- Department of Life Science and Systems Engineering , Kyushu Institute of Technology , 2-4 Hibikino , Wakamatsu-ku, Kitakyushu , Fukuoka 808-0196 , Japan
| | - Muhammad Akmal Kamarudin
- Department of Life Science and Systems Engineering , Kyushu Institute of Technology , 2-4 Hibikino , Wakamatsu-ku, Kitakyushu , Fukuoka 808-0196 , Japan
| | - Manish Pandey
- Department of Life Science and Systems Engineering , Kyushu Institute of Technology , 2-4 Hibikino , Wakamatsu-ku, Kitakyushu , Fukuoka 808-0196 , Japan
| | - Shyam S Pandey
- Department of Life Science and Systems Engineering , Kyushu Institute of Technology , 2-4 Hibikino , Wakamatsu-ku, Kitakyushu , Fukuoka 808-0196 , Japan
| | - Putao Zhang
- Department of Life Science and Systems Engineering , Kyushu Institute of Technology , 2-4 Hibikino , Wakamatsu-ku, Kitakyushu , Fukuoka 808-0196 , Japan
| | - Chi Huey Ng
- Department of Life Science and Systems Engineering , Kyushu Institute of Technology , 2-4 Hibikino , Wakamatsu-ku, Kitakyushu , Fukuoka 808-0196 , Japan
| | - Atul S M Tripathi
- Department of Life Science and Systems Engineering , Kyushu Institute of Technology , 2-4 Hibikino , Wakamatsu-ku, Kitakyushu , Fukuoka 808-0196 , Japan
| | - Tingli Ma
- Department of Life Science and Systems Engineering , Kyushu Institute of Technology , 2-4 Hibikino , Wakamatsu-ku, Kitakyushu , Fukuoka 808-0196 , Japan
| | - Shuzi Hayase
- Department of Life Science and Systems Engineering , Kyushu Institute of Technology , 2-4 Hibikino , Wakamatsu-ku, Kitakyushu , Fukuoka 808-0196 , Japan
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Duan X, Huang Z, Liu C, Yang J, Tan L, Chen Y. A bendable nickel oxide interfacial layer via polydopamine crosslinking for flexible perovskite solar cells. Chem Commun (Camb) 2019; 55:3666-3669. [DOI: 10.1039/c9cc00479c] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Flexible perovskite solar cells based on polydopamine cross-linked NiOx exhibited over 70% efficiency retention after 1000 bending cycles.
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Affiliation(s)
- Xiaopeng Duan
- College of Chemistry, Nanchang University
- Nanchang 330031
- China
- Institute of Polymers and Energy Chemistry (IPEC), Nanchang University
- Nanchang 330031
| | - Zengqi Huang
- College of Chemistry, Nanchang University
- Nanchang 330031
- China
- Institute of Polymers and Energy Chemistry (IPEC), Nanchang University
- Nanchang 330031
| | - Cong Liu
- College of Chemistry, Nanchang University
- Nanchang 330031
- China
- Institute of Polymers and Energy Chemistry (IPEC), Nanchang University
- Nanchang 330031
| | - Jia Yang
- College of Chemistry, Nanchang University
- Nanchang 330031
- China
- Institute of Polymers and Energy Chemistry (IPEC), Nanchang University
- Nanchang 330031
| | - Licheng Tan
- College of Chemistry, Nanchang University
- Nanchang 330031
- China
- Institute of Polymers and Energy Chemistry (IPEC), Nanchang University
- Nanchang 330031
| | - Yiwang Chen
- College of Chemistry, Nanchang University
- Nanchang 330031
- China
- Institute of Polymers and Energy Chemistry (IPEC), Nanchang University
- Nanchang 330031
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33
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Numata Y, Sanehira Y, Ishikawa R, Shirai H, Miyasaka T. Thiocyanate Containing Two-Dimensional Cesium Lead Iodide Perovskite, Cs 2PbI 2(SCN) 2: Characterization, Photovoltaic Application, and Degradation Mechanism. ACS APPLIED MATERIALS & INTERFACES 2018; 10:42363-42371. [PMID: 30426740 DOI: 10.1021/acsami.8b15578] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We explored thiocyanate (SCN)-based two-dimensional (2D) organometal lead halide perovskite families toward photovoltaic applications. Using an SCN axial ligand and various cation species, we examined AA'PbI2(SCN)2-type 2D perovskite by replacing the cation species (AA') between methylammonium (MA), formamidinium (FA), and cesium. Among various cation compositions, only all-inorganic cesium-based SCN perovskite, Cs2PbI2(SCN)2, film showed high thermal stability compared to known 2D perovskites. Perovskite solar cells (PSCs) using the Cs2PbI2(SCN)2 absorber yielded approximately 2% conversion efficiency on the mesoscopic device. Relatively low efficiency is attributed, in addition to optical properties (large band gap (2.05 eV) and exciton absorption), to the orientation of perovskite layer parallel to the layered structure, preventing carrier extraction from the light-absorber perovskite. In device stability, the Cs-based 2D perovskite was stable against oxygen (oxidation), whereas it was found to be unstable against humidity. X-ray diffraction and X-ray photoelectron spectroscopy measurements showed that, unlike long alkylammonium-based 2D perovskite families such as BA2PbI4 (BA = butylammonium), the Cs-based 2D perovskite can undergo hydrolysis due to the hydrophilic Cs cations.
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Affiliation(s)
- Youhei Numata
- Department of Engineering , Toin University of Yokohama , 1614 Kurgane-cho , Aoba, Yokohama , Kanagawa 225-8503 Japan
| | - Yoshitaka Sanehira
- Department of Engineering , Toin University of Yokohama , 1614 Kurgane-cho , Aoba, Yokohama , Kanagawa 225-8503 Japan
| | - Ryo Ishikawa
- Department of Functional Materials Science, Graduate School of Science and Engineering , Saitama University , 255 Shimo-okubo , Sakura-ku, Saitama 338-8570 Japan
| | - Hajime Shirai
- Department of Functional Materials Science, Graduate School of Science and Engineering , Saitama University , 255 Shimo-okubo , Sakura-ku, Saitama 338-8570 Japan
| | - Tsutomu Miyasaka
- Department of Engineering , Toin University of Yokohama , 1614 Kurgane-cho , Aoba, Yokohama , Kanagawa 225-8503 Japan
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Zhu X, Zuo S, Yang Z, Feng J, Wang Z, Zhang X, Priya S, Liu SF, Yang D. In Situ Grain Boundary Modification via Two-Dimensional Nanoplates to Remarkably Improve Stability and Efficiency of Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2018; 10:39802-39808. [PMID: 30379521 DOI: 10.1021/acsami.8b14954] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Even though a record efficiency of 23.3% has been achieved in organic-inorganic hybrid perovskite solar cells, their stability remains a critical issue, which greatly depends on the morphology of perovskite absorbers. Herein, we report a practical grain boundary modification to remarkably improve the humidity and thermal stability by gradually growing in situ two-dimensional nanoplates between the grain boundaries of perovskite films using phenylethylammonium iodide (PEAI). The experimental results show that PEAI nanoplates play a critical role in stabilizing perovskite thin films by reducing the moisture sensitivity and suppressing phase transition at the grain boundaries. In addition to the significant improved ambient stability, the grain boundary modification by PEAI can effectively suppress the nonradiative charge recombination at grain boundaries. As a result, the efficiency of perovskite solar cells is up to 20.34% with significant humidity and thermal stability.
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Affiliation(s)
- Xuejie Zhu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering , Shaanxi Normal University , Xi'an 710119 , China
| | - Shengnan Zuo
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering , Shaanxi Normal University , Xi'an 710119 , China
| | - Zhou Yang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering , Shaanxi Normal University , Xi'an 710119 , China
| | - Jiangshan Feng
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering , Shaanxi Normal University , Xi'an 710119 , China
| | - Ziyu Wang
- Dalian National Laboratory for Clean Energy, iChEM, Dalian Institute of Chemical Physics , Chinese Academy of Sciences , Dalian 116023 , China
| | - Xiaorong Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering , Shaanxi Normal University , Xi'an 710119 , China
| | - Shashank Priya
- Materials Science and Engineering , Penn State , University Park , Pennsylvania 16802 , United States
| | - Shengzhong Frank Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering , Shaanxi Normal University , Xi'an 710119 , China
- Dalian National Laboratory for Clean Energy, iChEM, Dalian Institute of Chemical Physics , Chinese Academy of Sciences , Dalian 116023 , China
| | - Dong Yang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering , Shaanxi Normal University , Xi'an 710119 , China
- Materials Science and Engineering , Penn State , University Park , Pennsylvania 16802 , United States
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