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Chen C, Zhang Z, Wang C, Geng T, Feng Y, Ding J, Ma Q, Gao W, Li M, Chen J, Tang JX. Synchronous Regulation Strategy of Pyrrolidinium Thiocyanate Enables Efficient Perovskite Solar Cells and Self-Powered Photodetectors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2311377. [PMID: 38299746 DOI: 10.1002/smll.202311377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 01/12/2024] [Indexed: 02/02/2024]
Abstract
Developing inventive approaches to control crystallization and suppress trap defects in perovskite films is crucial for achieving efficient perovskite photovoltaics. Here, a synchronous regulation strategy is developed that involves the infusion of a zwitterionic ionic liquid additive, pyrrolidinium thiocyanate (PySCN), into the perovskite precursor to optimize the subsequent crystallization and defects. PySCN modification not only orchestrates the crystallization process but also deftly addresses trap defects in perovskite films. Within this, SCN- compensates for positively charged defects, while Py+ plays the role of passivating negatively charged defects. Based on the vacuum flash evaporation without anti-solvent, the air-processed perovskite solar cells (PSCs) with PySCN modification can achieve an extraordinary champion efficiency of 22.46% (0.1 cm2) and 21.15% (1.0 cm2) with exceptional stability surpassing 1200 h. Further, the self-powered photodetector goes above and beyond, showcasing an ultra-low dark current of 2.13 × 10-10 A·cm-2, a specific detection rate of 6.12 × 1013 Jones, and an expansive linear dynamic range reaching an astonishing 122.49 dB. PySCN modification not only signifies high efficiency but also ushers in a new era for crystallization regulation, promising a transformative impact on the optoelectronic performance of perovskite-based devices.
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Affiliation(s)
- Cong Chen
- Macao Institute of Materials Science and Engineering (MIMSE), Faculty of Innovation Engineering, Macau University of Science and Technology, Taipa, Macau, 999078, China
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300401, China
| | - Zuolin Zhang
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300401, China
| | - Chen Wang
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300401, China
| | - Taoran Geng
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300401, China
| | - Yinsu Feng
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300401, China
| | - Jike Ding
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300401, China
| | - Quanxing Ma
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300401, China
| | - Wenhuan Gao
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300401, China
| | - Mengjia Li
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300401, China
| | - Jiangzhao Chen
- Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, China
| | - Jian-Xin Tang
- Macao Institute of Materials Science and Engineering (MIMSE), Faculty of Innovation Engineering, Macau University of Science and Technology, Taipa, Macau, 999078, China
- Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, 215123, P. R. China
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Guan N, Zhang Y, Chen W, Jiang Z, Gu L, Zhu R, Yadav D, Li D, Xu B, Cao L, Gao X, Chen Y, Song L. Deciphering the Morphology Change and Performance Enhancement for Perovskite Solar Cells Induced by Surface Modification. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2205342. [PMID: 36453563 PMCID: PMC9875650 DOI: 10.1002/advs.202205342] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 11/15/2022] [Indexed: 05/27/2023]
Abstract
Organic-inorganic perovskite solar cells (PSCs) have achieved great attention due to their expressive power conversion efficiency (PCE) up to 25.7%. To improve the photovoltaic performance of PSCs, interface engineering between the perovskite and hole transport layer (HTL) is a widely used strategy. Following this concept, benzyl trimethyl ammonium chlorides (BTACls) are used to modify the wet chemical processed perovskite film in this work. The BTACl-induced low dimensional perovskite is found to have a bilayer structure, which efficiently decreases the trap density and improves the energy level alignment at the perovskite/HTL interface. As a result, the BTACl-modified PSCs show an improved PCE compared to the control devices. From device modeling, the reduced charge carrier recombination and promoted charge carrier transfer at the perovskite/HTL interface are the cause of the open-circuit (Voc ) and fill factor (FF) improvement, respectively. This study gives a deep understanding for surface modification of perovskite films from a perspective of the morphology and the function of enhancing photovoltaic performance.
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Affiliation(s)
- Nianci Guan
- Frontiers Science Center for Flexible ElectronicsInstitute of Flexible Electronics (IFE)Northwestern Polytechnical University (NPU)Xi'an710072P. R. China
| | - Yuezhou Zhang
- Frontiers Science Center for Flexible ElectronicsInstitute of Flexible Electronics (IFE)Northwestern Polytechnical University (NPU)Xi'an710072P. R. China
| | - Wei Chen
- Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology, Center for Advanced Material Diagnostic Technology, and College of EngineeringPhysicsShenzhen Technology University (SZTU)Lantian Road 3002Shenzhen518118China
| | - Zhengyan Jiang
- Department of Materials Science and EngineeringSouthern University of Science and TechnologyShenzhen518055China
| | - Lei Gu
- Frontiers Science Center for Flexible ElectronicsInstitute of Flexible Electronics (IFE)Northwestern Polytechnical University (NPU)Xi'an710072P. R. China
| | - Ruixue Zhu
- Frontiers Science Center for Flexible ElectronicsInstitute of Flexible Electronics (IFE)Northwestern Polytechnical University (NPU)Xi'an710072P. R. China
| | - Deependra Yadav
- Frontiers Science Center for Flexible ElectronicsInstitute of Flexible Electronics (IFE)Northwestern Polytechnical University (NPU)Xi'an710072P. R. China
- Pharmaceutical Sciences LaboratoryFaculty of Science and EngineeringÅbo Akademi UniversityTurkuFI‐00520Finland
| | - Deli Li
- Fujian Cross Strait Institute of Flexible Electronics (Future Technologies)Fujian Normal UniversityFuzhou350117China
| | - Baomin Xu
- Department of Materials Science and EngineeringSouthern University of Science and TechnologyShenzhen518055China
| | - Leifeng Cao
- Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology, Center for Advanced Material Diagnostic Technology, and College of EngineeringPhysicsShenzhen Technology University (SZTU)Lantian Road 3002Shenzhen518118China
| | - Xingyu Gao
- Country Shanghai Synchrotron Radiation Facility (SSRF)Zhangjiang LabShanghai Advanced Research InstituteChinese Academy of SciencesShanghai201204China
| | - Yonghua Chen
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM)Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)Nanjing Tech University (NanjingTech)30 South Puzhu RoadNanjingJiangsu211816China
| | - Lin Song
- Frontiers Science Center for Flexible ElectronicsInstitute of Flexible Electronics (IFE)Northwestern Polytechnical University (NPU)Xi'an710072P. R. China
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