Anti-solvent mixture-mediated reduction of photocurrent hysteresis in high-impurity perovskite precursor based MAPbI3 solar cells
| Autor: | Yuan-Liang Zhong, Diksha Thakur, Ji-Lin Shen, Yin-Song Liao, Chia-Lung Tsai, Chun-Chuen Yang, Sheng Hsiung Chang, Chung-Yu Li, Anjali Chandel, Shou-En Chiang, Po-Han Lee, Jia-Ren Wu |
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| Rok vydání: | 2021 |
| Předmět: |
Photocurrent
Photoluminescence Materials science Spectrometer Renewable Energy Sustainability and the Environment 020209 energy Analytical chemistry Nucleation 02 engineering and technology 021001 nanoscience & nanotechnology Impurity 0202 electrical engineering electronic engineering information engineering General Materials Science Thin film 0210 nano-technology Perovskite (structure) Diffractometer |
| Zdroj: | Solar Energy. 214:86-92 |
| ISSN: | 0038-092X |
| DOI: | 10.1016/j.solener.2020.11.062 |
| Popis: | High-impurity precursor based CH3NH3PbI3 (MAPbI3) perovskite thin films are fabricated by using the one-step spin-coating method with an anti-solvent mixture-mediated nucleation (ASMEN) process under various dropping times. The structural, optical and excitonic properties of the resultant perovskite thin films are characterized through the X-ray diffractometer, absorbance spectrometer, photoluminescence spectrometer and Raman scattering spectrometer. The experimental results show that the dropping time and the use of 10% dicloromethane (DCM) in the ASMEN process strongly influences the formation of point defects in the resultant MAPbI3 thin film, which dominates the current-hysteresis behavior in the current density-voltage curves of solar cells. In addition, this investigation helps further understand the effects of toluene/DCM anti-solvent mixture on the formation of point defect-free MAPbI3 thin films. |
| Databáze: | OpenAIRE |
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