SCAPS-1D 시뮬레이션을 이용한 n-i-p 구조 페로브스카이트 태양전지의 열적 열화 원인 분석

• Published in: Current Photovoltaic Research Vol. 10; no. 1; pp. 16 - 22
• Main Authors: 김성탁(Seongtak Kim), 배수현(Soohyun Bae), 정영훈(Younghun Jeong), 한동운(Dong-Woon Han), 김동환(Donghwan Kim), 모찬빈(Chan Bin Mo)
• Format: Journal Article
• Language: Korean
• Published: 한국태양광발전학회 2022
• Subjects: 기타공학; Spiro-OMeTAD; Perovskite solar cell; Lifetime; Methyl ammonium lead iodide; Thermal-induced degradation; SCAPS-1D; Recombination velocity; Ion migration; Doping density; Long-term stability; Metyl ammonium lead iodide
• ISSN: 2288-3274; 2508-125X
• DOI: 10.21218/CPR.2022.10.1.016

The long-term stability of PSCs against visual and UV light, moisture, electrical bias and high temperature is an important issue for commercialization. In particular, since the operation temperature of solar cell can rise above 85℃, a study on thermal stability is required. In this study, the cause of thermal-induced degradation of PSCs was investigated using the SCAPS-1D simulation tool. First, PSCs of TiO2/CH3NH3PbI3/Spiro-OMeTAD/Au structure were exposed to a constant temperature of 85℃ to observe changes in conversion efficiency and quantum efficiency. Because the EQE reduction above 500 nm was remarkable, we simulated PSCs performance as a function of lifetime, doping density of perovskite and spiro-OMeTAD. Consequently, the main cause of thermal-induced degradation is considered to be the change in the perovskite doping concentration and lifetime due to ion migration of perovskite.