Functional characterization of lead-free hybrid perovskite materials and solar cells

该项目的目的是阐明存在于新型TiN钙钛矿型光活性薄膜中的定量结构-功能关系，然后将其用于形成制造高效太阳能电池吸波材料的设计标准。他将使用一系列先进的光学和结构表征技术来探测作为材料和界面形态函数的界面电荷转移过程。具体地说，基于激光的瞬时吸收、时间相关的单光子计数和飞秒上转换光谱等光学探针将被用来直接(实时)询问电荷分离和复合的动力学。这些研究将得到电子显微镜和XPS的补充，以探测膜的形态和膜内缺陷的性质。他希望主要发展基于溶液的制造技能，以及在使用这里讨论的光学和结构探头方面的实践经验。

Project aim is to elucidate of quantitative structure-function relationships that exist in novel tin perovskite photoactive layers, which can then be used to form a design criteria to fabricate absorbers for high efficiency solar cells. He will use a range of advanced optical and structural characterization techniques to probe interfacial charge transfer processes as a function of materials and interface morphology. Specifically, optical probes such as laser-based transient absorption, time-correlated single photon counting and femtosecond upconversion spectroscopy will be used to directly interrogate (in real time) the kinetics of charge separation and recombination. These studies will be complemented by electron microscopy and XPS to probe film morphology and the nature of defects within the films. He hopes to principally develop skills in solution-based fabrication as well hands-on experience in using optical and structural probes discussed herein.