Deposition and I-V hysteresis of CH3NH3PbI3 perovskite on planar heterojunctioned solar cells

• Main Authors: MulongYang, 楊牧龍
• Other Authors: Jyh-Ming Ting
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/99136657590306569918

碩士 === 國立成功大學 === 材料科學及工程學系 === 103 === The alkyl-ammonium metal trihalide perovskites are an exciting new class of solar absorber materials and have exhibited a rapid increase in solar cell efficiencies throughout the past three years to over 20%. Good quality and high orientation perovskite crystalline films were expected to less recombination and faster electron flux. Two common deposition method is utilized to assemble planar heterojunctioned perovskite solar cells, one-step solution method and two-step sequential solution method. Spin-coating is the most common depositing process of perovskite. In this work, we used a novel method to synthesized modified PbI2 film which could be used for intramolecular exchange in two-step method. And discussed the influence of different one-step recipe to perovskite thin film formation. I-V hysteresis was also investigated, finding that hysteresis phenomena fitting theoretical assumption. Intensity modulated photovoltage spectroscopy (IMVS) measurement was introduced into perovskite solar cells for carrier life time calculating. This work preliminarily discussed the impact factor of perovskite thin film deposition, I-V hysteresis and carrier life time.