1
|
Tailor NK, Senanayak SP, Abdi-Jalebi M, Satapathi S. Low-frequency carrier kinetics in triple cation perovskite solar cells probed by impedance and modulus spectroscopy. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138430] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
2
|
Abstract
Electric noise spectroscopy is a non-destructive and a very sensitive method for studying the dynamic behaviors of the charge carriers and the kinetic processes in several condensed matter systems, with no limitation on operating temperatures. This technique has been extensively used to investigate several perovskite compounds, manganese oxides (La1−xSrxMnO3, La0.7Ba0.3MnO3, and Pr0.7Ca0.3MnO3), and a double perovskite (Sr2FeMoO6), whose properties have recently attracted great attention. In this work are reported the results from a detailed electrical transport and noise characterizations for each of the above cited materials, and they are interpreted in terms of specific physical models, evidencing peculiar properties, such as quantum interference effects and charge density waves.
Collapse
|
3
|
Cao H, Dong Z, Qiu Y, Li J, Wang Y, Li Z, Yang L, Yin S. Precursor Engineering of Vapor-Exchange Processes for 20%-Efficient 1 cm 2 Inverted-Structure Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2020; 12:41303-41311. [PMID: 32797753 DOI: 10.1021/acsami.0c10379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Due to mass diffusion issues, it is challenging to prepare black-phase thick formamidinium-based perovskite (FAPbI3) films via vapor approaches. Precursor engineering is employed here to overcome the dilemma of thorough reaction and black-phase stabilization of FAPbI3 in a sequential vapor approach. For the first time, FAPbBr3 was used as an additive in the precursor to promote the formation of FAPbI3 perovskite. To balance off the increased crystallization degree of precursor films due to the addition of FAPbBr3, CsI dissolved in dimethyl sulfoxide (DMSO) was further added. It is indicated that the simultaneous incorporation of FAPbBr3 and CsI-DMSO successfully accelerated the formation rate of perovskite and inhibited the formation of FAPbI3 yellow phase. The power conversion efficiency of the as-prepared devices of different areas (0.1125 or 1 cm2) reached 20%, the first report of large-area 20%-efficiency PSCs based on a vapor approach, highlighting its applicability to large-area manufacture in the future. Furthermore, when blade coating is used in preparing the precursor film, the efficiency reached 19%. When the precursor film was prepared by dip coating, we could prepare conformal FAPbI3 coatings on carbon fibers, suggesting possible future applications in fabricating wearable PSCs.
Collapse
Affiliation(s)
- Huanqi Cao
- Key Laboratory of Display Materials and Photoelectric Devices (Ministry of Education), Tianjin Key Laboratory for Photoelectric Materials and Devices, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Zheng Dong
- Key Laboratory of Display Materials and Photoelectric Devices (Ministry of Education), Tianjin Key Laboratory for Photoelectric Materials and Devices, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Yuan Qiu
- Center for Electron Microscopy, Tianjin Key Lab of Advanced Functional Porous Materials, Institute for New Energy Materials and Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Jinzhao Li
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, HySPRINT Innovation Lab: Young Investigator Group Hybrid Materials Formation and Scaling, Kekuléststraße 5, Berlin 12489, Germany
| | - Yujie Wang
- Key Laboratory of Display Materials and Photoelectric Devices (Ministry of Education), Tianjin Key Laboratory for Photoelectric Materials and Devices, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Ziyi Li
- Key Laboratory of Display Materials and Photoelectric Devices (Ministry of Education), Tianjin Key Laboratory for Photoelectric Materials and Devices, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Liying Yang
- Key Laboratory of Display Materials and Photoelectric Devices (Ministry of Education), Tianjin Key Laboratory for Photoelectric Materials and Devices, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Shougen Yin
- Key Laboratory of Display Materials and Photoelectric Devices (Ministry of Education), Tianjin Key Laboratory for Photoelectric Materials and Devices, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
| |
Collapse
|
4
|
Kumar A, Bansode U, Ogale S, Rahman A. Understanding the thermal degradation mechanism of perovskite solar cells via dielectric and noise measurements. NANOTECHNOLOGY 2020; 31:365403. [PMID: 32470953 DOI: 10.1088/1361-6528/ab97d4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Long term stability is a major obstacle to the success of perovskite solar cell (PSC) photovoltaic technology. PSC performance deteriorates significantly in the presence of humidity, oxygen and exposure to UV light and heat. Here the change in charge transport properties of PSC with temperature and the associated significant drop in device performance at high temperature have been investigated. The latter is shown to be primarily due to an increase in charge carrier recombination, which impacts the open-circuit voltage. To understand the pathway of temperature-induced degradation, low-frequency 1/f noise characteristics, and the capacitance-frequency, as well as capacitance-voltage characteristics have been investigated under various conditions. The results show that at high operating temperature accumulation of ions and charge carriers at the interface increase the surface recombination. Aging experiments at different temperatures show high stability of PSCs up to temperature <70 °C, but a drastic, irreversible degradation occurs at higher temperature (≥80 °C). Low-frequency 1/f noise study revealed that the magnitude of normalized noise in degraded perovskite solar cells is four orders of magnitude higher than the pristine device. This study shows the power of low-frequency noise measurement technique as a highly sensitive non-invasive tool to study the degradation mechanism of PSCs.
Collapse
Affiliation(s)
- Ankit Kumar
- Department of Physics and Centre for Energy Science, Indian Institute of Science Education and Research (IISER)-Pune, Pune, Maharashtra 411008 India
| | | | | | | |
Collapse
|
5
|
Sangwan VK, Zhu M, Clark S, Luck KA, Marks TJ, Kanatzidis MG, Hersam MC. Low-Frequency Carrier Kinetics in Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2019; 11:14166-14174. [PMID: 30896169 DOI: 10.1021/acsami.9b03884] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Hybrid organic-inorganic halide perovskite solar cells have emerged as leading candidates for third-generation photovoltaic technology. Despite the rapid improvement in power conversion efficiency (PCE) for perovskite solar cells in recent years, the low-frequency carrier kinetics that underlie practical roadblocks such as hysteresis and degradation remain relatively poorly understood. In an effort to bridge this knowledge gap, we perform here correlated low-frequency noise (LFN) and impedance spectroscopy (IS) characterization that elucidates carrier kinetics in operating perovskite solar cells. Specifically, we focus on planar cell geometries with a SnO2 electron transport layer and two different hole transport layers-namely, poly(triarylamine) (PTAA) and spiro-OMeTAD. PTAA and spiro-OMeTAD cells with moderate PCEs of 5-12% possess a Lorentzian feature at ∼200 Hz in LFN measurements that corresponds to a crossover from electrode to dielectric polarization. In comparison, spiro-OMeTAD cells with high PCEs (>15%) show 4 orders of magnitude lower LFN amplitude and are accompanied by a cyclostationary process. Through a systematic study of more than a dozen solar cells, we establish a correlation with noise amplitude, PCE, and fill factor. Overall, this work establishes correlated LFN and IS as an effective methodology for quantifying low-frequency carrier kinetics in perovskite solar cells, thereby providing new physical insights that can rationally guide ongoing efforts to improve device performance, reproducibility, and stability.
Collapse
Affiliation(s)
| | - Menghua Zhu
- Wuhan National Laboratory for Optoelectronics (WNLO) , Huazhong University of Science and Technology (HUST) , Wuhan 430074 , China
| | | | | | | | | | | |
Collapse
|
6
|
Ng A, Ren Z, Hu H, Fong PWK, Shen Q, Cheung SH, Qin P, Lee JW, Djurišić AB, So SK, Li G, Yang Y, Surya C. A Cryogenic Process for Antisolvent-Free High-Performance Perovskite Solar Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1804402. [PMID: 30277609 DOI: 10.1002/adma.201804402] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 08/04/2018] [Indexed: 06/08/2023]
Abstract
A cryogenic process is introduced to control the crystallization of perovskite layers, eliminating the need for the use of environmentally harmful antisolvents. This process enables decoupling of the nucleation and the crystallization phases by inhibiting chemical reactions in as-cast precursor films rapidly cooled down by immersion in liquid nitrogen. The cooling is followed by blow-drying with nitrogen gas, which induces uniform precipitation of precursors due to the supersaturation of precursors in the residual solvents at very low temperature, while at the same time enhancing the evaporation of the residual solvents and preventing the ordered precursors/perovskite from redissolving into the residual solvents. Using the proposed techniques, the crystallization process can be initiated after the formation of a uniform precursor seed layer. The process is generally applicable to improve the performance of solar cells using perovskite films with different compositions, as demonstrated on three different types of mixed halide perovskites. A champion power conversion efficiency (PCE) of 21.4% with open-circuit voltage (VOC ) = 1.14 V, short-circuit current density ( JSC ) = 23.5 mA cm-2 , and fill factor (FF) = 0.80 is achieved using the proposed cryogenic process.
Collapse
Affiliation(s)
- Annie Ng
- Department of Electrical and Computer Engineering, School of Engineering, Nazarbayev University, Astana, 010000, Kazakhstan
| | - Zhiwei Ren
- Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hong Kong S.A.R
| | - Hanlin Hu
- Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hong Kong S.A.R
| | - Patrick W K Fong
- Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hong Kong S.A.R
| | - Qian Shen
- Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hong Kong S.A.R
| | - Sin Hang Cheung
- Department of Physics, Hong Kong Baptist University, Hong Kong S.A.R
| | - Pingli Qin
- Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hong Kong S.A.R
| | - Jin-Wook Lee
- Department of Materials Science and Engineering, University of California, Los Angeles, CA, 90095-9000, USA
| | | | - Shu Kong So
- Department of Physics, Hong Kong Baptist University, Hong Kong S.A.R
| | - Gang Li
- Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hong Kong S.A.R
| | - Yang Yang
- Department of Materials Science and Engineering, University of California, Los Angeles, CA, 90095-9000, USA
| | - Charles Surya
- School of Engineering, Nazarbayev University, Astana, Kazakhstan
| |
Collapse
|