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Wang J, Liu S, Guan X, Wang K, Shen S, Cong C, Chen CC, Xie F. Enhancing the Efficiency and Stability of Inverted Formamidinium-Cesium Lead-Triiodide Perovskite Solar Cells through Lewis Base Pretreatment of Buried Interfaces. ACS APPLIED MATERIALS & INTERFACES 2024; 16:35732-35739. [PMID: 38924757 DOI: 10.1021/acsami.4c04901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
Mixed components of formamidinium(FA) and cesium (Cs)-based perovskite solar cells are the most hopeful for commercialization owing to their excellent operational and phase stabilities, especially for devices with inverted structure. The nonradiative recombination of carriers can be effectively suppressed through interface optimization, therefore, the performance of devices can be improved. Notably, the buried interface emerges as critical aspects such as charge transport, charge recombination kinetics, and morphology of perovskite films. This study focuses on a straightforward yet effective approach to overcome buried interface challenges between organic polymers (poly(-triarylamine) (PTAA) and FACs-based perovskite films. The PTAA substrate is pretreated with a Lewis base known as 2-butynoic acid (BA) with a C═O functional group. First, it can be an interfacial buffering layer, harmonizing stress mismatch between the perovskite and PTAA layers, consequently optimizing crystallization and improving perovskite film quality. Second, Pb2+ defect can be passivated at the buried interface of the perovskite film through binding with the C═O group of the BA molecule. This dual-function strategy leads to a substantial enhancement in both photoelectric conversion efficiency (PCE) and stability of devices. Finally, the PCE of the device-modified buried interface with BA reaches an impressive 23.33%. Furthermore, unencapsulated devices with BA treatment maintain approximately 94% of their initial efficiency after aging at maximum power point tracking for 1000 h.
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Affiliation(s)
- Jing Wang
- Institute for Electric Light Sources, School of Information Science and Technology, Fudan University, Shanghai 200433, China
- Shanghai Engineering Research Center for Artificial Intelligence and Integrated Energy System, Fudan University, Shanghai 200433, China
| | - Siyu Liu
- Institute for Electric Light Sources, School of Information Science and Technology, Fudan University, Shanghai 200433, China
| | - Xiang Guan
- Institute for Electric Light Sources, School of Information Science and Technology, Fudan University, Shanghai 200433, China
- Shanghai Engineering Research Center for Artificial Intelligence and Integrated Energy System, Fudan University, Shanghai 200433, China
| | - Kongxiang Wang
- Institute for Electric Light Sources, School of Information Science and Technology, Fudan University, Shanghai 200433, China
- Shanghai Engineering Research Center for Artificial Intelligence and Integrated Energy System, Fudan University, Shanghai 200433, China
| | - Shuwen Shen
- State Key Laboratory ASIC&System, School of Information Science and Technology, Fudan University, Shanghai 200433, China
| | - Chunxiao Cong
- State Key Laboratory ASIC&System, School of Information Science and Technology, Fudan University, Shanghai 200433, China
- Yiwu Research Institute of Fudan University, Yiwu City, Zhejiang 322000, China
| | - Chun-Chao Chen
- School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 20024, China
| | - Fengxian Xie
- Institute for Electric Light Sources, School of Information Science and Technology, Fudan University, Shanghai 200433, China
- Shanghai Engineering Research Center for Artificial Intelligence and Integrated Energy System, Fudan University, Shanghai 200433, China
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Mohamad Noh MF, Arzaee NA, Harif MN, Mat Teridi MA, Mohd Yusoff ARB, Mahmood Zuhdi AW. Defect Engineering at Buried Interface of Perovskite Solar Cells. SMALL METHODS 2024:e2400385. [PMID: 39031619 DOI: 10.1002/smtd.202400385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Revised: 05/31/2024] [Indexed: 07/22/2024]
Abstract
Perovskite solar cells (PSC) have developed rapidly since the past decade with the aim to produce highly efficient photovoltaic technology at a low cost. Recently, physical and chemical defects at the buried interface of PSC including vacancies, impurities, lattice strain, and voids are identified as the next formidable hurdle to the further advancement of the performance of devices. The presence of these defects has unfavorably impacted many optoelectronic properties in the PSC, such as band alignment, charge extraction/recombination dynamics, ion migration behavior, and hydrophobicity. Herein, a broad but critical discussion on various essential aspects related to defects at the buried interface is provided. In particular, the defects existing at the surface of the underlying charge transporting layer (CTL) and the bottom surface of the perovskite film are initially elaborated. In situ and ex situ characterization approaches adopted to unveil hidden defects are elucidated to determine their influence on the efficiency, operational stability, and photocurrent-voltage hysteresis of PSC. A myriad of innovative strategies including defect management in CTL, the introduction of passivation materials, strain engineering, and morphological control used to address defects are also systematically elucidated to catalyze the further development of more efficient, reliable, and commercially viable photovoltaic devices.
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Affiliation(s)
- Mohamad Firdaus Mohamad Noh
- Institute of Sustainable Energy (ISE), Universiti Tenaga Nasional (UNITEN), Jalan IKRAM-UNITEN, Kajang, Selangor, 43000, Malaysia
| | - Nurul Affiqah Arzaee
- Institute of Sustainable Energy (ISE), Universiti Tenaga Nasional (UNITEN), Jalan IKRAM-UNITEN, Kajang, Selangor, 43000, Malaysia
| | - Muhammad Najib Harif
- Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM), Cawangan Negeri Sembilan, Kuala Pilah, Negeri Sembilan, 72000, Malaysia
| | - Mohd Asri Mat Teridi
- Solar Energy Research Institute, Universiti Kebangsaan Malaysia, Bangi, Selangor, 43600, Malaysia
| | - Abd Rashid Bin Mohd Yusoff
- Physics Department, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru, Johor, 81310, Malaysia
| | - Ahmad Wafi Mahmood Zuhdi
- Institute of Sustainable Energy (ISE), Universiti Tenaga Nasional (UNITEN), Jalan IKRAM-UNITEN, Kajang, Selangor, 43000, Malaysia
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Li Y, Yao D, Tang Z, Jiang B, Li C, Gao Y, Tian N, Wang J, Zheng G, Long F. SnO 2-Perovskite Interface Engineering Based on Bifacial Passivation via Multifunctional N-(2-Acetamido)-2-aminoethanesulfonic Acid toward Efficient and Stable Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2024; 16:9388-9399. [PMID: 38324460 DOI: 10.1021/acsami.3c16025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Bifacial passivation on both electron transport materials and perovskite light-absorbing layers as a straightforward technique is used for gaining efficient and stable perovskite solar cells (PSCs). To develop this strategy, organic molecules containing multiple functional groups can maximize the effect of defect suppression. Based on this, we introduce N-(2-acetamido)-2-aminoethanesulfonic acid (ACES) at the interface between tin oxide (SnO2) and perovskite. The synergistic effect of multiple functional groups in ACES, including amino, carbonyl (C═O), and sulfonic acid (S═O) groups, promotes charge extraction of SnO2 and provides an improved energy level alignment for charge transfer. Furthermore, S═O in ACES effectively passivates the defects of uncoordinated Pb2+ in perovskite films, resulting in enhanced crystallinity and decreased nonradiative recombination at the buried interface. The power conversion efficiency (PCE) of related PSCs increases from 20.21% to 22.65% with reduced J-V hysteresis after interface modification with ACES. Notably, upon being stored at a low relative humidity of 40 ± 5% over 2000 h and high relative humidity of 80 ± 5% over 1000 h, the unencapsulated ACES-modified device retains up to 90% and 80% of their initial PCE, respectively. This study deepens defect passivation engineering on the buried interface of perovskites for realizing efficient and stable solar cells.
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Affiliation(s)
- Ying Li
- Guangxi Key Laboratory of Optical and Electronic Materials and Devices, School of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Disheng Yao
- Guangxi Key Laboratory of Optical and Electronic Materials and Devices, School of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, People's Republic of China
- Collaborative Innovation Center for Exploration of Nonferrous Metal Deposits and Efficient Utilization of Resources, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Ziqi Tang
- Guangxi Key Laboratory of Optical and Electronic Materials and Devices, School of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Bo Jiang
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, People's Republic of China
| | - Chao Li
- Guangxi Key Laboratory of Optical and Electronic Materials and Devices, School of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Yihua Gao
- Guangxi Key Laboratory of Optical and Electronic Materials and Devices, School of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, People's Republic of China
- Center for Nanoscale Characterization & Devices (CNCD), School of Physics and Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology (HUST), Wuhan 430074, People's Republic of China
| | - Nan Tian
- Guangxi Key Laboratory of Optical and Electronic Materials and Devices, School of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Jilin Wang
- Guangxi Key Laboratory of Optical and Electronic Materials and Devices, School of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, People's Republic of China
- Collaborative Innovation Center for Exploration of Nonferrous Metal Deposits and Efficient Utilization of Resources, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Guoyuan Zheng
- Guangxi Key Laboratory of Optical and Electronic Materials and Devices, School of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, People's Republic of China
- Collaborative Innovation Center for Exploration of Nonferrous Metal Deposits and Efficient Utilization of Resources, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Fei Long
- Guangxi Key Laboratory of Optical and Electronic Materials and Devices, School of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, People's Republic of China
- Collaborative Innovation Center for Exploration of Nonferrous Metal Deposits and Efficient Utilization of Resources, Guilin University of Technology, Guilin 541004, People's Republic of China
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