钙钛矿的超快载流子动力学研究进展  

Research progress of perovskite ultrafast carrier dynamics

作　　者：牛鑫淼 NIU Xinmiao(Sinopec(Beijing)Research Institute of Chemical Industry Co.,Ltd.,Beijing 100013,China)

机构地区：[1]中石化(北京)化工研究院有限公司,北京100013

出　　处：《石油化工》2024年第6期912-918,共7页Petrochemical Technology

摘　　要：在第三代太阳能电池中,钙钛矿太阳能电池最具应用前景。钙钛矿中的载流子动力学行为,包括载流子的生成、转移与复合,与太阳能电池的性能密切相关。由于载流子的动力学过程通常发生在亚皮秒到纳秒的尺度上,因此飞秒瞬态吸收光谱是研究这一瞬态过程的最有力技术。通过分析钙钛矿的飞秒瞬态吸收光谱,综述了钙钛矿的超快载流子动力学的研究进展,包括热载流子的探测、缺陷态捕获以及电荷转移过程,并对飞秒瞬态吸收光谱的发展前景进行了展望。Perovskite solar cells are the most promising candidate for the third-generation solar cells.The carrier dynamics behaviors in perovskite,including the carrier generation,transfer,and recombination,are closely related to the performance of the solar cell.Since the carrier dynamics behaviors usually occur on sub-picosecond to nanosecond timescales,femtosecond transient absorption spectroscopy is a powerful technique to investigate this transient dynamic process.By analyzing the femtosecond transient absorption spectra of perovskite,the investigations of ultrafast carrier dynamics of perovskite are reviewed,including the monitoring of hot carriers,trapping of defect states and charge transfer process.Finally,the development of femtosecond transient absorption spectra is prospected.

关 键 词：钙钛矿 太阳能电池 飞秒瞬态吸收光谱 

分 类 号：TM914.4[电气工程—电力电子与电力传动]