Interfaces, Stability and Energy Efficiency: Photo-chemical Characterisation of Perovskites for Printable Photovoltaics

该项目旨在研究钙钛矿的光化学，以更好地了解它们的性能和降解行为，特别是在可印刷的钙钛矿设备中。评估铅基钙钛矿对环境的影响，并研究减少这种影响的方法。减少铅影响的主要重点是考虑到寿命结束时的所有铅，因此该项目旨在系统地确定设备在制造前后和多次再制造循环之后的铅含量，使用紫外/可见光谱、荧光光谱和微波等离子体原子发射光谱。这项工作还包括调整钙钛矿材料的沉积，以了解沉积（即一步沉积与两步沉积）对降解和随后的再制造的影响，以确定设备的“可再制造性”。最终目标是了解再制造循环如何影响钙钛矿材料的基本特性，材料可以循环多少次，并确定标准化的方案，同时考虑到系统中的所有铅，并确保不会从设备中漏出铅。为了研究再制造，采用紫外/可见、稳态和时间分辨荧光测量研究了薄膜的光物理性质，并用XRD监测了薄膜的形貌。

This project aims to investigate the photochemistry of perovskites to better understand their performance and degradation behaviour, particularly in printable perovskite devices. To assess the environmental impact of lead-based perovskites and investigate methods to reduce this impact. The main focus of reducing the lead impact is to account for all the lead at end-of-life and thus the project is aiming to systematically determine the lead content of devices before and after manufacturing and after multiple re-manufacturing cycles with UV/Vis, fluorescence spectroscopy and microwave plasma-atomic emission spectroscopy. The work also involving tuning the deposition of the perovskite material to understand the effect of deposition (i.e. 1 step vs 2-step deposition) on the degradation and the subsequent re-manufacture to determine the "re-manufacturability" of devices. The ultimate aim is to understand how re-manufacturing cycles affects the fundamental properties of the perovskite material, how many times the material can by cycled and to determine standardised protocol for doing so with accounting for all the lead in the system and ensuring no lead leeching from devices. For the studies on remanufacturing the photophysical properties of the film are studied with UV/Vis and steady state and time resolved fluorescence measurements and the morphology is monitored with XRD.