为如期实现碳达峰、碳中和的全国经济发展战略目标，在能源转化领域，加快钙钛矿太阳能电池（PSCs）的发展变得十分迫切。钙钛矿（PVK）薄膜结晶质量差而产生内部缺陷导致器件的不稳定是当下PSCs最需要解决的问题之一。但主要影响PVK薄膜结晶质量的制备过程背后的机理仍鲜有人知。本项目拟基于“一步法” PVK薄膜制备工艺，引入辉光放电发射光谱检测技术，探究4种不同体系的PVK及相应10种有无添加剂的前驱体溶液在制备PVK薄膜过程中的机理。首先，在薄膜制备的旋涂过程中，研究旋涂时间与反溶剂对相形成的影响；其次，在薄膜制备的热退火过程中，通过探究薄膜内残余溶剂的蒸发速率来确定薄膜生长参数，构建生长参数与薄膜结晶质量的关系。最后，基于所得到不同的薄膜生长参数，本项目将提出具有普适性的PVK薄膜生长模型，为突破因薄膜结晶质量差而导致PSC稳定性缺失所遭遇的技术瓶颈提供新的解决思路。

In order to realize the national economic development strategy of peak carbon and carbon neutrality as planned, it is very urgent to accelerate the development of perovskite solar cells (PSCs) in the field of energy conversion. The poor crystalline quality of perovskite(PVK) thin films, which leads to internal defects and thus device instability, is one of the most pressing problems for PSCs today. However, the mechanism behind the preparation process, which mainly affects the crystalline quality of PVK films, is still not well understood. Based on the "one-step" PVK film preparation, this project aims to introduce the detection technology of glow discharge optical emission spectroscopy to investigate the mechanism of 4 different PVK systems and the corresponding 10 kinds of precursor solutions with or without additives in the preparation of PVK films. First, the effects of spin coating time and anti-solvent on phase formation during the spin coating process of thin-film preparation were investigated. Secondly, during the thermal annealing process of thin-film preparation, the film growth parameters were determined by studying the evaporation rate of the residual solvent in the thin film. The relationship between the growth parameters and the crystalline quality of the films was constructed. Finally, based on the obtained various film growth parameters, this project will propose a universal PVK film growth model, which will provide new solutions to overcome the technical bottleneck caused by the lack of PSC stability due to the poor crystalline quality of the films.