1
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Li J, Qi Z, Yang P, Tang Q, Duan J. Air-fabricated CsPbIBr 2 perovskite film for efficient and stable solar cells by a triacetyl resveratrol additive. Chem Commun (Camb) 2024; 60:8617-8620. [PMID: 39046254 DOI: 10.1039/d4cc02293a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
Herein, we demonstrate that triacetyl resveratrol (TRES) can be employed as an antioxidant additive to suppress the formation of oxidation-induced defects in air-fabricated perovskite films. When assembling into carbon-based CsPbIBr2 and CsPbI2Br cells, an enhanced efficiency of 10.38% and 14.98% has been achieved, with nearly unchanged efficiency after 1128 h of shelf storage in air and 86% of the initial efficiency after >1000 h aging at 85 °C.
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Affiliation(s)
- Jiabao Li
- Key Laboratory of Advanced Technique & Preparation for Renewable Energy Materials, Ministry of Education, Yunnan Normal University, Kunming 650500, P. R. China.
- Institute of Carbon Neutrality, College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, P. R. China.
| | - Ziting Qi
- Key Laboratory of Advanced Technique & Preparation for Renewable Energy Materials, Ministry of Education, Yunnan Normal University, Kunming 650500, P. R. China.
| | - Peizhi Yang
- Key Laboratory of Advanced Technique & Preparation for Renewable Energy Materials, Ministry of Education, Yunnan Normal University, Kunming 650500, P. R. China.
| | - Qunwei Tang
- Institute of Carbon Neutrality, College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, P. R. China.
| | - Jialong Duan
- Institute of Carbon Neutrality, College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, P. R. China.
- Wuhan National Laboratory for Optoelectronics and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China.
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2
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Zhu L, Zhang J, Xu F, Cao B. Simultaneous Defect Passivation and Electric Level Regulation with Rubidium Fluoride for High-Efficiency CsPbI 2Br Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38687880 DOI: 10.1021/acsami.4c02980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Due to the good balance of efficiency and stability, CsPbI2Br perovskite solar cells (PSCs) recently have attracted widespread attention. However, the improvement in photovoltaic performance for CsPbI2Br PSCs was mainly limited by massive defects and unmatched energy levels. Surface modification is the most convenient and effective strategy to decrease defect densities of perovskite films. Herein, we deposited rubidium fluoride (RbF) onto the surface of CsPbI2Br perovskite films by spin-coating. The numerous defects could be significantly passivated by RbF, resulting in suppressed nonradiative recombination. Furthermore, the CsPbI2Br perovskite film after RbF treatment exhibits a deeper Fermi level, and an additional built-in electric field forms to promote charge transport. Consequently, the champion device achieves a high efficiency of 10.82% with an improved VOC of 1.14 V, and it also exhibits excellent stability after long-term storage. This work offers a simple and effective approach to enhance the photovoltaic performance and stability of PSCs for broader applications in the future.
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Affiliation(s)
- Linhao Zhu
- School of Physics and Physical Engineering, Qufu Normal University, Qufu, Shandong 273165, P. R. China
| | - Junshuai Zhang
- School of Material Science and Engineering, University of Jinan, Jinan, Shandong 250022, P. R. China
| | - Fan Xu
- School of Physics and Physical Engineering, Qufu Normal University, Qufu, Shandong 273165, P. R. China
| | - Bingqiang Cao
- School of Material Science and Engineering, University of Jinan, Jinan, Shandong 250022, P. R. China
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3
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Li L, Tao L, Wang L, Li Y, Li J, Ni Z, Fang Y, Yang D. Monolithic integration of perovskite heterojunction on TFT backplanes through vapor deposition for sensitive and stable x-ray imaging. SCIENCE ADVANCES 2024; 10:eadj8659. [PMID: 38669325 PMCID: PMC11051656 DOI: 10.1126/sciadv.adj8659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 03/27/2024] [Indexed: 04/28/2024]
Abstract
Metal halide perovskites exhibit substantial potential for advancing next-generation x-ray detection. However, fabricating high-performance pixelated imaging arrays remains challenging due to the substantial dark current density and stability issues associated with common organic-inorganic hybrid perovskites. Here, we develop a vapor deposition method to create the first all-inorganic perovskite heterojunction film. The heterojunction introduction effectively reduces the dark current density of detectors to about 0.8 nA·cm-2, satisfying thin-film transistor (TFT) integration standards, while also increases sensitivity to above 2.6 × 104 μC·Gyair-1·cm-2, thus giving rise to a record low detection limit of <1 nGyair·s-1 among all polycrystalline perovskite-based x-ray detectors. The devices also demonstrate remarkable stability across multifarious demanding working conditions. Last, through monolithic integration of the heterojunction film with a 64 × 64 pixelated TFT array, we have achieved high-resolution real-time x-ray imaging, which paves the way for the application of all-inorganic perovskite in low-dose flat-panel x-ray detection.
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Affiliation(s)
- Liqi Li
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Liting Tao
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Lixiang Wang
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Yuyang Li
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Jiawen Li
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Zhenyi Ni
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Yanjun Fang
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan 030024, P. R. China
- Shangyu Institute of Semiconductor Materials, Shaoxing 312366, P. R. China
| | - Deren Yang
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
- Shangyu Institute of Semiconductor Materials, Shaoxing 312366, P. R. China
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4
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Wang Y, Lv P, Pan J, Chen J, Liu X, Hu M, Wan L, Cao K, Liu B, Ku Z, Cheng YB, Lu J. Grain Boundary Elimination via Recrystallization-Assisted Vapor Deposition for Efficient and Stable Perovskite Solar Cells and Modules. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2304625. [PMID: 37466632 DOI: 10.1002/adma.202304625] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/16/2023] [Accepted: 07/17/2023] [Indexed: 07/20/2023]
Abstract
Vapor deposition is a promising technology for the mass production of perovskite solar cells. However, the efficiencies of solar cells and modules based on vapor-deposited perovskites are significantly lower than those fabricated using the solution method. Emerging evidence suggests that large defects are generated during vapor deposition owing to a specific top-down crystallization mechanism. Herein, a hybrid vapor deposition method combined with solvent-assisted recrystallization for fabricating high-quality large-area perovskite films with low defect densities is presented. It is demonstrated that an intermediate phase can be formed at the grain boundaries, which induces the secondary growth of small grains into large ones. Consequently, perovskite films with substantially reduced grain boundaries and defect densities are fabricated. Results of temperature-dependent charge-carrier dynamics show that the proposed method successfully suppresses all recombination reactions. Champion efficiencies of 21.9% for small-area (0.16 cm2 ) cells and 19.9% for large-area (10.0 cm2 ) solar modules under AM 1.5 G irradiation are achieved. Moreover, the modules exhibit high operational stability, i.e., they retain >92% of their initial efficiencies after 200 h of continuous operation.
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Affiliation(s)
- Yulong Wang
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, China
| | - Pin Lv
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, China
| | - Junye Pan
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, China
| | - Jiahui Chen
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, China
| | - Xinjie Liu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, China
| | - Min Hu
- School of Electronic and Electrical Engineering, Hubei Province Engineering Research Center for Intelligent Micro-Nano Medical Equipment and Key Technologies, Wuhan Textile University, Wuhan, 430200, China
| | - Li Wan
- Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Materials Science and Engineering, Hubei University, Wuhan, 430062, China
| | - Kun Cao
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing, 210023, China
| | - Baoshun Liu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, China
| | - Zhiliang Ku
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
| | - Yi-Bing Cheng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
- Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Foshan, 528216, China
| | - Jianfeng Lu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, China
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5
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Ghosh T, Mane P, Chakraborty B, Sahoo PK, Pradhan D. Laterally Grown Strain-Engineered Semitransparent Perovskite Solar Cells with 16.01% Efficiency. ACS APPLIED MATERIALS & INTERFACES 2023; 15:17994-18005. [PMID: 36978214 DOI: 10.1021/acsami.2c20124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Hybrid organometallic halide perovskite-based semitransparent solar cell research has garnered significant attention recently due to their promising applications for smart windows, tandem devices, wearable electronics, displays, and sustainable internet-of-things. Though considerable progress has been made, stability, controlling the crystalline qualities, and growth orientation in perovskite thin films play crucial roles in improving the photovoltaic (PV) performance. Recently, strain modulation within the perovskite gathers an immense interest that is achieved by the ex situ process. However, little work is reported on in situ strain modulation, which is presented here. Apart from the challenges in the fabrication of high-efficiency perovskite solar cell (PSC) devices under ambient conditions, the stability of organic hole-transporting materials needs urgent attention. Herein, a single-step deposition of formamidiniumchloride (FACl)-mediated CH3NH3PbI3 (MAPbI3) thin films without an inert atmosphere and CuI as the inorganic hole-transporting material is demonstrated for their potential application toward semitransparent PSCs. The FACl amount in MAPbI3 (mg/mL) plays a critical role in controlling the crystallinity, growth orientations, and in situ strains, which modulate the charge carrier transport dynamics, thereby improving the efficiency of the PSC device. A photoconversion efficiency of 16.01% has been achieved from MAPbI3 with 20 mg/mL of FACl additive incorporation. The modification of the structural, electronic, and optical properties and the origin of strain in the as-synthesized MAPbI3 domains due to the addition of FACl are further validated with experimental findings in detail using density functional theory simulations.
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Affiliation(s)
- Tuhin Ghosh
- Materials Science Centre, Indian Institute of Technology, Kharagpur 721 302, India
| | - Pratap Mane
- Seismology Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Brahmananda Chakraborty
- High Pressure and Synchroton Radiation Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
- Homi Bhabha National Institute, Mumbai 400094, India
| | - Prasana Kumar Sahoo
- Materials Science Centre, Indian Institute of Technology, Kharagpur 721 302, India
| | - Debabrata Pradhan
- Materials Science Centre, Indian Institute of Technology, Kharagpur 721 302, India
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6
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Sun Q, Shang MH, Fang Z, Zheng Y, Hou X, Yang W. Improving Out-of-Plane Charge Mobility and Phase Stability of Dion-Jacobson Lead-Free Perovskites via Intercalating π-Conjugated Aromatic Spacers. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2207755. [PMID: 36932932 DOI: 10.1002/smll.202207755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 02/25/2023] [Indexed: 06/18/2023]
Abstract
The layered quasi-2D perovskites are recognized as one of the effective strategies to resolve the big problem of intrinsic phase instability of the perovskites. However, in such configurations, their performance is fundamentally limited due to the correspondingly weakened out-of-plane charge mobility. Herein, the π-conjugated p-phenylenediamine (PPDA) is introduced as organic ligand ions for rationally designing lead-free and tin-based 2D perovskites with the aid of theoretical computation. It is evidenced that both out-of-plane charge transport capacity and stability can be significantly enhanced within as-established quasi-2D Dion-Jacobson (DJ) (PPDA)Csn -1 Snn I3 n +1 perovskites. The obviously increased electrical conductivity and reduced carrier effective masses are attributed to the enhanced interlayer interactions, limited structural distortions of diamine cations, as well as improved orbital coupling between Sn2+ and I- ions of (PPDA)Csn -1 Snn I3 n +1 perovskites. Accordingly, by dimension engineering of the inorganic layer (n), the bandgap (Eg ) of quasi-2D perovskites can be linearly tailored toward the suitable Eg (1.387 eV) with optimal photoelectric conversion efficiency (PCE) of 18.52%, representing their great potential toward promising applications in advanced solar cells.
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Affiliation(s)
- Qian Sun
- Institute of Micro/Nano Materials and Devices, Ningbo University of Technology, Ningbo, 315211, P. R. China
- Innovation Research Institute for Carbon Neutrality, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Ming-Hui Shang
- Institute of Micro/Nano Materials and Devices, Ningbo University of Technology, Ningbo, 315211, P. R. China
| | - Zhi Fang
- Institute of Micro/Nano Materials and Devices, Ningbo University of Technology, Ningbo, 315211, P. R. China
- School of Materials Science and Engineering, Peking University, Beijing, 100091, P. R. China
| | - Yapeng Zheng
- Institute of Micro/Nano Materials and Devices, Ningbo University of Technology, Ningbo, 315211, P. R. China
- Innovation Research Institute for Carbon Neutrality, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Xinmei Hou
- Innovation Research Institute for Carbon Neutrality, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Weiyou Yang
- Institute of Micro/Nano Materials and Devices, Ningbo University of Technology, Ningbo, 315211, P. R. China
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7
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Liu X, Li J, Cui X, Wang X, Yang D. Strategies for the preparation of high-performance inorganic mixed-halide perovskite solar cells. RSC Adv 2022; 12:32925-32948. [PMID: 36425177 PMCID: PMC9667475 DOI: 10.1039/d2ra05535j] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 11/03/2022] [Indexed: 11/17/2022] Open
Abstract
Inorganic halide perovskites have attracted significant attention in the field of photovoltaics (PV) in recent years due to their superior intrinsic thermal stability and excellent theoretical power conversion efficiency (PCE). CsPbI3 with a bandgap of ∼1.7 eV is considered to be the most potential candidate for PV application. However, bulk CsPbI3 films exhibit poor phase stability. The substitution of some iodide ions with bromide/chloride in CsPbI3 results in the formation of mixed-halide CsPbX3 perovskites, which exhibit a good balance between phase stability and efficiency. The halogen-tunable mixed-halide inorganic perovskites have a bandgap matching the sunlight region and show great potential for application in multi-junction tandem and semitransparent solar cells. Herein, the progress of mixed-halide CsPbX3 PSCs is systematically reviewed, including CsPbI x Br y Cl3-x-y - and CsPbIBr2-based IPSCs. In the case of CsPbIBr2 IPSCs, we introduce the low-temperature deposition of CsPbIBr2 films, doping methods for the preparation of high-quality CsPbIBr2 films and strategies for improving the performance of solar cells. Furthermore, the mechanism of crystallization/interface engineering for the preparation of high-quality CsPbIBr2 films and efficient solar cells devices is emphasized. Finally, the development direction of further improving the PV performance and commercialization of mixed-halide IPSCs are summarized and prospected.
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Affiliation(s)
- Xin Liu
- a, College of Optoelectronic Engineering, Chengdu University of Information Technology Chengdu 610225 China
| | - Jie Li
- a, College of Optoelectronic Engineering, Chengdu University of Information Technology Chengdu 610225 China
| | - Xumei Cui
- a, College of Optoelectronic Engineering, Chengdu University of Information Technology Chengdu 610225 China
| | - Xiao Wang
- a, College of Optoelectronic Engineering, Chengdu University of Information Technology Chengdu 610225 China
| | - Dingyu Yang
- a, College of Optoelectronic Engineering, Chengdu University of Information Technology Chengdu 610225 China
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8
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Yuan Y, Yan G, Hong R, Liang Z, Kirchartz T. Quantifying Efficiency Limitations in All-Inorganic Halide Perovskite Solar Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2108132. [PMID: 35014106 DOI: 10.1002/adma.202108132] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 12/22/2021] [Indexed: 06/14/2023]
Abstract
While halide perovskites have excellent optoelectronic properties, their poor stability is a major obstacle toward commercialization. There is a strong interest to move away from organic A-site cations such as methylammonium and formamidinium toward Cs with the aim of improving thermal stability of the perovskite layers. While the optoelectronic properties and the device performance of Cs-based all-inorganic lead-halide perovskites are very good, they are still trailing behind those of perovskites that use organic cations. Here, the state-of-the-art of all-inorganic perovskites for photovoltaic applications is reviewed by performing detailed meta-analyses of key performance parameters on the cell and material level. Key material properties such as carrier mobilities, external photoluminescence quantum efficiency, and photoluminescence lifetime are discussed and what is known about defect tolerance in all-inorganic is compared relative to hybrid (organic-inorganic) perovskites. Subsequently, a unified approach is adopted for analyzing performance losses in perovskite solar cells based on breaking down the losses into several figures of merit representing recombination losses, resistive losses, and optical losses. Based on this detailed loss analysis, guidelines are eventually developed for future performance improvement of all-inorganic perovskite solar cells.
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Affiliation(s)
- Ye Yuan
- Institute for Solar Energy Systems, Guangdong Provincial Key Laboratory of Photovoltaic Technology, School of Physics, Sun Yat-sen University, Guangzhou, 510006, P. R. China
- IEK5-Photovoltaik, Forschungszentrum Jülich, 52425, Jülich, Germany
| | - Genghua Yan
- Institute for Solar Energy Systems, Guangdong Provincial Key Laboratory of Photovoltaic Technology, School of Physics, Sun Yat-sen University, Guangzhou, 510006, P. R. China
- IEK5-Photovoltaik, Forschungszentrum Jülich, 52425, Jülich, Germany
| | - Ruijiang Hong
- Institute for Solar Energy Systems, Guangdong Provincial Key Laboratory of Photovoltaic Technology, School of Physics, Sun Yat-sen University, Guangzhou, 510006, P. R. China
| | - Zongcun Liang
- Institute for Solar Energy Systems, Guangdong Provincial Key Laboratory of Photovoltaic Technology, School of Physics, Sun Yat-sen University, Guangzhou, 510006, P. R. China
| | - Thomas Kirchartz
- IEK5-Photovoltaik, Forschungszentrum Jülich, 52425, Jülich, Germany
- Faculty of Engineering and CENIDE, University of Duisburg-Essen, Carl-Benz-Str. 199, 47057, Duisburg, Germany
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9
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Faheem MB, Khan B, Feng C, Ahmed SB, Jiang J, Rehman MU, Subhani WS, Farooq MU, Nie J, Makhlouf MM, Qiao Q. Synergistic Approach toward Erbium-Passivated Triple-Anion Organic-Free Perovskite Solar Cells with Excellent Performance for Agrivoltaics Application. ACS APPLIED MATERIALS & INTERFACES 2022; 14:6894-6905. [PMID: 35099176 PMCID: PMC8832393 DOI: 10.1021/acsami.1c23476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Accepted: 01/21/2022] [Indexed: 06/14/2023]
Abstract
All-inorganic perovskite solar cells (IPSCs) have gained massive attention due to their less instability against common degradation factors (light, heat, and moisture) than their organic-inorganic hybrid counterparts. Inorganic perovskites bear a general formula of CsPbX3 (X = Cl, I, Br). The mixed halide CsPbIBr2 perovskite possesses an intermediate band gap of 2.03 eV with enhanced stability, which is still available for photovoltaic applications and the research focus of this work. We present a synergistic approach of pre-heated solution dropping with inorganic additive inclusion to deposit the organic-free triple anion CsPbIBr2 PSC. Erbium (Er)-passivated triple-anion CsI(PbBr2)0.97(ErCl3)0.03 IPSCs with inorganic carrier selective layers (CTLs), that is, organic-free, are fabricated with enhanced carrier diffusion length and crystalline grain size while lessening the grain boundaries near perovskite active layer (PAL)-bulk/carrier selective interfaces. As a result, the trap-state densities within the perovskite bulk were suppressed with stabilized CTL/PAL interfaces for smooth and enhanced carrier transportation. Therefore, for the first time, we contradict the common belief of VOC loss due to halide segregation, as a nice VOC of about 1.34 V is achieved for an organic-free IPSC through enriching initial radiative efficiency, even when halide segregation is present. The optimized organic-free IPSC yielded a power conversion efficiency of 11.61% and a stabilized power output of 10.72%, which provides the potential opportunity to integrate into agrivoltaics (AgV) projects.
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Affiliation(s)
- M. Bilal Faheem
- Institute
of Fundamental and Frontier Sciences, University
of Electronic Science and Technology of China (UESTC), Chengdu 610054, P.R. China
| | - Bilawal Khan
- Department
of Materials Science and Engineering, City
University of Hongkong, Hongkong
SAR 999077, China
| | - Chao Feng
- Institute
of Fundamental and Frontier Sciences, University
of Electronic Science and Technology of China (UESTC), Chengdu 610054, P.R. China
| | - Syed Bilal Ahmed
- Department
of Materials Science and Engineering, City
University of Hongkong, Hongkong
SAR 999077, China
| | - Jiexuan Jiang
- Institute
of Fundamental and Frontier Sciences, University
of Electronic Science and Technology of China (UESTC), Chengdu 610054, P.R. China
| | - Mutee-Ur Rehman
- Department
of Materials Science and Engineering, City
University of Hongkong, Hongkong
SAR 999077, China
| | - W. S. Subhani
- Department
of Materials Science and Engineering, City
University of Hongkong, Hongkong
SAR 999077, China
| | - M. U. Farooq
- Institute
of Fundamental and Frontier Sciences, University
of Electronic Science and Technology of China (UESTC), Chengdu 610054, P.R. China
| | - Jinlan Nie
- School
of Physics, University of Electronic Science
and Technology of China, Chengdu 610054, China
| | - M. M. Makhlouf
- Department
of Sciences and Technology, Ranyah University College, Taif University, P.O.
BOX 11099, Taif 21944, Saudi Arabia
| | - Quinn Qiao
- Energy
Generation and Storage Lab, Department of Mechanical and Aerospace
Engineering, Syracuse University, Syracuse, New York 13244, United States
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10
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Hu L, Duan L, Yao Y, Chen W, Zhou Z, Cazorla C, Lin C, Guan X, Geng X, Wang F, Wan T, Wu S, Cheong S, Tilley RD, Liu S, Yuan J, Chu D, Wu T, Huang S. Quantum Dot Passivation of Halide Perovskite Films with Reduced Defects, Suppressed Phase Segregation, and Enhanced Stability. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2102258. [PMID: 34845861 PMCID: PMC8805552 DOI: 10.1002/advs.202102258] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 10/18/2021] [Indexed: 05/04/2023]
Abstract
Structural defects are ubiquitous for polycrystalline perovskite films, compromising device performance and stability. Herein, a universal method is developed to overcome this issue by incorporating halide perovskite quantum dots (QDs) into perovskite polycrystalline films. CsPbBr3 QDs are deposited on four types of halide perovskite films (CsPbBr3 , CsPbIBr2 , CsPbBrI2 , and MAPbI3 ) and the interactions are triggered by annealing. The ions in the CsPbBr3 QDs are released into the thin films to passivate defects, and concurrently the hydrophobic ligands of QDs self-assemble on the film surfaces and grain boundaries to reduce the defect density and enhance the film stability. For all QD-treated films, PL emission intensity and carrier lifetime are significantly improved, and surface morphology and composition uniformity are also optimized. Furthermore, after the QD treatment, light-induced phase segregation and degradation in mixed-halide perovskite films are suppressed, and the efficiency of mixed-halide CsPbIBr2 solar cells is remarkably improved to over 11% from 8.7%. Overall, this work provides a general approach to achieving high-quality halide perovskite films with suppressed phase segregation, reduced defects, and enhanced stability for optoelectronic applications.
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Affiliation(s)
- Long Hu
- School of EngineeringMacquarie University Sustainable Energy Research CentreMacquarie UniversitySydneyNSW2109Australia
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Leiping Duan
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Yuchen Yao
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Weijian Chen
- School of Photovoltaic and Renewable Energy EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Zizhen Zhou
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Claudio Cazorla
- Departament de FísicaUniversitat Politècnica de CatalunyaCampus Nord B4‐B5BarcelonaE‐08034Spain
| | - Chun‐Ho Lin
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Xinwei Guan
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Xun Geng
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Fei Wang
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Tao Wan
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Shuying Wu
- School of EngineeringMacquarie University Sustainable Energy Research CentreMacquarie UniversitySydneyNSW2109Australia
| | - Soshan Cheong
- Electron Microscope UnitMark Wainwright Analytical CentreUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Richard D. Tilley
- Electron Microscope UnitMark Wainwright Analytical CentreUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Shanqin Liu
- School of Chemistry and Chemical EngineeringHenan Institute of Science and TechnologyXinxiangHenan453003P. R. China
| | - Jianyu Yuan
- Institute of Functional Nano & Soft Materials (FUNSOM)Jiangsu Key Laboratory for Carbon‐Based Functional Materials and DevicesJoint International Research Laboratory of Carbon‐Based Functional Materials and DevicesSoochow University199 Ren‐Ai Road, Suzhou Industrial ParkSuzhouJiangsu215123P. R. China
| | - Dewei Chu
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Tom Wu
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Shujuan Huang
- School of EngineeringMacquarie University Sustainable Energy Research CentreMacquarie UniversitySydneyNSW2109Australia
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11
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Li J, Zhang G, Zhang Z, Li J, Uddin Z, Zheng Y, Shao Y, Yuan Y, Yang B. Defect Passivation via Additive Engineering to Improve Photodetection Performance in CsPbI 2Br Perovskite Photodetectors. ACS APPLIED MATERIALS & INTERFACES 2021; 13:56358-56365. [PMID: 34788529 DOI: 10.1021/acsami.1c19323] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Solution-processable all-inorganic lead halide perovskites are under intensive attention due to their potential applications in low-cost high-performance optoelectronic devices such as photodetectors. However, solution processing usually generates structural and chemical defects which are detrimental to the photodetection performance of photodetectors. Here, a polymer additive of polyethylene glycol (PEG) was employed to passivate the localized defects in CsPbI2Br films through the Lewis acid-base interaction. The interfacial defects were passivated efficiently by introducing a trace amount of a PEG additive with a concentration of 0.4 mg mL-1 into the CsPbI2Br precursor solution, as suggested by the significantly reduced trap density of state, which was revealed using thermal admittance spectroscopy. Fourier transform infrared spectrum characterization showed that rather than Cs+ or I-, a Lewis acid-base interaction was established between Pb2+ and PEG to passivate the defects in the CsPbI2Br perovskite, which leads to large suppression of noise current. Both specific detectivity and linear dynamic range improved from 4.1 × 109 Jones and 73 dB to 2.2 × 1011 Jones and 116 dB, respectively. Our work demonstrates the feasibility of employing an environmentally stable polymeric additive PEG to passivate defects for high photodetection performance in all-inorganic perovskite photodetectors.
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Affiliation(s)
- Jia Li
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Guodong Zhang
- Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Zihan Zhang
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Junchi Li
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Zaheen Uddin
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Yifan Zheng
- Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Yuchuan Shao
- Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Yongbo Yuan
- Hunan Key Laboratory of Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha, Hunan 410083, China
| | - Bin Yang
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China
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12
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Qi X, Wang J, Tan F, Dong C, Liu K, Li X, Zhang L, Wu H, Wang HL, Qu S, Wang Z, Wang Z. Quantum Dot Interface-Mediated CsPbIBr 2 Film Growth and Passivation for Efficient Carbon-Based Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2021; 13:55349-55357. [PMID: 34762401 DOI: 10.1021/acsami.1c16290] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
CsPbIxBry-based all-inorganic perovskite materials are a potential candidate for stable semitransparent and tandem structured photovoltaic devices. However, poor film (morphological and crystalline) quality and interfacial recombination lead consequently to a decline in the photoelectric conversion performance of the applied solar cells. In this work, we incorporated PbS quantum dots (QDs) at the interface of electron transporting layer (ETL) SnO2 and perovskite to modulate the crystallization of CsPbIBr2 and the interfacial charge dynamics in carbon-based solar cells. The as-casted PbS QDs behave as seeds for lattice-matching the epitaxial growth of pinhole-free CsPbIBr2 films. The modified films with reduced defect density exhibit facilitated carrier transfer and suppressed charge recombination at the ETL/perovskite interface, contributing to an enhanced device efficiency from 7.00 to 9.09% and increased reproducibility and ambient stability. This strategic method of QD-assisted lattice-matched epitaxial growth is promising to prepare high-quality perovskite films for efficient perovskite solar cells.
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Affiliation(s)
- Xingnan Qi
- Key Laboratory of Photovoltaic Materials, Henan University, Kaifeng, Henan 475004, P. R. China
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University, Beijing 100048, P. R. China
- Department of Materials Science and Engineering, Southern University of Science and Technology, Xueyuan Avenue 1088, Shenzhen, Guangdong 518055, P. R. China
- Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology, Xueyuan Avenue 1088, Shenzhen, Guangdong 518055, P. R. China
| | - Jiantao Wang
- Department of Materials Science and Engineering, Southern University of Science and Technology, Xueyuan Avenue 1088, Shenzhen, Guangdong 518055, P. R. China
- Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology, Xueyuan Avenue 1088, Shenzhen, Guangdong 518055, P. R. China
- Department of Chemistry, Hong Kong University of Science and Technology, Clear Water Bay Road, Hong Kong 999077, P. R. China
| | - Furui Tan
- Key Laboratory of Photovoltaic Materials, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Chen Dong
- Key Laboratory of Photovoltaic Materials, Henan University, Kaifeng, Henan 475004, P. R. 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, P. R. China
| | - Xiaobao Li
- School of Civil Engineering, Hefei University of Technology, Hefei, Anhui 230009, P. R. China
| | - Lisheng Zhang
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University, Beijing 100048, P. R. China
| | - Hongkai Wu
- Department of Chemistry, Hong Kong University of Science and Technology, Clear Water Bay Road, Hong Kong 999077, P. R. China
| | - Hsing-Lin Wang
- Department of Materials Science and Engineering, Southern University of Science and Technology, Xueyuan Avenue 1088, Shenzhen, Guangdong 518055, P. R. China
- Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology, Xueyuan Avenue 1088, Shenzhen, Guangdong 518055, P. R. China
| | - 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, P. R. 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, P. R. 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, P. R. China
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13
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Yue Y, Zhou J, Cheng Q, Zhang X, Wang B, Li Y, Li S, Cao R, Wang K, Wang H, Zhou H, Zhang Y. Peculiar Steric Hindrance Assists Monoclinic Phase Formation toward High-Quality All-Inorganic Perovskites. J Phys Chem Lett 2021; 12:11228-11237. [PMID: 34762444 DOI: 10.1021/acs.jpclett.1c03021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Bromine-containing metal halide all-inorganic perovskite CsPbI2Br exhibits excellent photoelectric performance and supreme thermal and structural stabilities; it is thus attractive for use as photoabsorbing layers in perovskite solar cells (PSCs). However, when steric hindrance molecules are introduced, the complicated phase transition mechanism and the difficult-to-control crystallization process in CsPbI2Br are not well understood. Here, we introduce a class of sterically hindered cesium naphthenate small molecules to control the crystallization process of CsPbI2Br films. Of interest, a new intermediate monoclinic phase has been discovered which leads to formation of dense and nonporous polycrystalline perovskite films. This phenomenon was also explained by density functional theory. The residues of steric hindrance molecules inside the CsPbI2Br film also improve its stability. We further show that as the ring number of cycloalkanes increases, the hindrance for the crystallization becomes more significant. Thus, by choosing the suitable steric hindrance, the optimal photovoltaic efficiency is 15.45%.
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Affiliation(s)
- Yaochang Yue
- Heeger Research and Development Center, School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, P. R. China
| | - Jiyu Zhou
- Heeger Research and Development Center, School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, P. R. China
| | - Qian Cheng
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Xuning Zhang
- Heeger Research and Development Center, School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, P. R. China
| | - Boxin Wang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Yanxun Li
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Shilin Li
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Ruiqi Cao
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Kaiyuan Wang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Hui Wang
- Laboratory of Theoretical and Computational Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing 100190, China
| | - Huiqiong Zhou
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Yuan Zhang
- Heeger Research and Development Center, School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, P. R. China
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14
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Chai W, Ma J, Zhu W, Chen D, Xi H, Zhang J, Zhang C, Hao Y. Suppressing Halide Phase Segregation in CsPbIBr 2 Films by Polymer Modification for Hysteresis-Less All-Inorganic Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2021; 13:2868-2878. [PMID: 33426867 DOI: 10.1021/acsami.0c20135] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
All-inorganic perovskite CsPbIBr2 materials are promising for optoelectronics, owing to their upgraded ambient stability and suitable bandgap. Unfortunately, they generally undergo severe halide phase segregation under illumination, which creates many iodide-rich and bromide-rich domains coupled with significant deterioration of their optical/electrical properties. Herein, we propose a facile and effective strategy to overcome the halide phase segregation in the CsPbIBr2 film by modifying its crystalline grains with poly(methyl methacrylate) (PMMA) for the first time. Such a strategy is proceeded by covering a PMMA layer on the substrate before deposition of the CsPbIBr2 film. Further investigations manifest that the CsPbIBr2 film with PMMA possesses larger grains, better crystallinity, and fewer traps than the one without any modification. Moreover, it holds the nearly eliminated halide phase segregation. Therefore, the carbon-based, all-inorganic CsPbIBr2 perovskite solar cell exhibits the much suppressed photocurrent hysteresis, coupled with an outstanding efficiency of 9.21% and a high photovoltage of 1.307 V.
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Affiliation(s)
- Wenming Chai
- State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology & Shaanxi Joint Key Laboratory of Graphene, School of Microelectronics, Xidian University, Xi'an 710071, China
| | - Junxiao Ma
- State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology & Shaanxi Joint Key Laboratory of Graphene, School of Microelectronics, Xidian University, Xi'an 710071, China
| | - Weidong Zhu
- State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology & Shaanxi Joint Key Laboratory of Graphene, School of Microelectronics, Xidian University, Xi'an 710071, China
| | - Dazheng Chen
- State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology & Shaanxi Joint Key Laboratory of Graphene, School of Microelectronics, Xidian University, Xi'an 710071, China
| | - He Xi
- State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology & Shaanxi Joint Key Laboratory of Graphene, School of Microelectronics, Xidian University, Xi'an 710071, China
| | - Jincheng Zhang
- State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology & Shaanxi Joint Key Laboratory of Graphene, School of Microelectronics, Xidian University, Xi'an 710071, China
| | - Chunfu Zhang
- State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology & Shaanxi Joint Key Laboratory of Graphene, School of Microelectronics, Xidian University, Xi'an 710071, China
| | - Yue Hao
- State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology & Shaanxi Joint Key Laboratory of Graphene, School of Microelectronics, Xidian University, Xi'an 710071, China
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15
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Kausar A, Sattar A, Xu C, Zhang S, Kang Z, Zhang Y. Advent of alkali metal doping: a roadmap for the evolution of perovskite solar cells. Chem Soc Rev 2021; 50:2696-2736. [DOI: 10.1039/d0cs01316a] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Metal–halide hybrid perovskites have prompted the prosperity of the sustainable energy field and simultaneously demonstrated their great potential in meeting both the growing consumption of energy and the increasing social development requirements.
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Affiliation(s)
- Ammarah Kausar
- Beijing Advanced Innovation Center for Materials Genome Engineering
- Beijing Key Laboratory for Advanced Energy Materials and Technologies
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | - Abdul Sattar
- Beijing Advanced Innovation Center for Materials Genome Engineering
- Beijing Key Laboratory for Advanced Energy Materials and Technologies
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | - Chenzhe Xu
- Beijing Advanced Innovation Center for Materials Genome Engineering
- Beijing Key Laboratory for Advanced Energy Materials and Technologies
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | - Suicai Zhang
- Beijing Advanced Innovation Center for Materials Genome Engineering
- Beijing Key Laboratory for Advanced Energy Materials and Technologies
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | - Zhuo Kang
- Beijing Advanced Innovation Center for Materials Genome Engineering
- Beijing Key Laboratory for Advanced Energy Materials and Technologies
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | - Yue Zhang
- Beijing Advanced Innovation Center for Materials Genome Engineering
- Beijing Key Laboratory for Advanced Energy Materials and Technologies
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
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16
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Liu X, Wu J, Yang Y, Wang D, Li G, Wang X, Sun W, Wei Y, Huang Y, Huang M, Fan L, Lan Z, Lin J, Ho KC. Additive Engineering by Bifunctional Guanidine Sulfamate for Highly Efficient and Stable Perovskites Solar Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2004877. [PMID: 33136349 DOI: 10.1002/smll.202004877] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 09/16/2020] [Indexed: 06/11/2023]
Abstract
High efficiency and good stability are the challenges for perovskite solar cells (PSCs) toward commercialization. However, the intrinsic high defect density and internal nonradiative recombination of perovskite (PVK) limit its development. In this work, a facile additive strategy is devised by introducing bifunctional guanidine sulfamate (GuaSM; CH6 N3 + , Gua+ ; H2 N-SO3 - , SM- ) into PVK. The size of Gua+ ion is suitable with Pb(BrI)2 cavity relatively, so it can participate in the formation of low-dimensional PVK when mixed with Pb(BrI)2 . The O and N atoms of SM- can coordinate with Pb2+ . The synergistic effect of the anions and cations effectively reduces the trap density and the recombination in PVK, so that it can improve the efficiency and stability of PSCs. At an optimal concentration of GuaSM (2 mol%), the PSC presents a champion power conversion efficiency of 21.66% and a remarkably improved stability and hysteresis. The results provide a novel strategy for highly efficient and stable PSCs by bifunctional additive.
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Affiliation(s)
- Xuping Liu
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, 361021, China
| | - Jihuai Wu
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, 361021, China
| | - Yuqian Yang
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, 361021, China
| | - Deng Wang
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, 361021, China
| | - Guodong Li
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, 361021, China
| | - Xiaobing Wang
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, 361021, China
| | - Weihai Sun
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, 361021, China
| | - Yuelin Wei
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, 361021, China
| | - Yunfang Huang
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, 361021, China
| | - Miaoliang Huang
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, 361021, China
| | - Leqing Fan
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, 361021, China
| | - Zhang Lan
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, 361021, China
| | - Jianming Lin
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, 361021, China
| | - Kuo-Chuan Ho
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
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