Surface and interface properties of next generation solar cells

下一代太阳能电池的表面和界面特性

• 批准号: 2297406
• 金额: --
• 依托单位: University of Manchester
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2297406
• 关键词: Surface; interface; properties; next; generation

Organometal halide perovskite quantum dots (PQDs) are considered one of the most promising materials for use in next-generation solar cells. With tunable bandgaps, strong light-absorption coefficients, high defect tolerance and low non-radiative recombination rates, PQDs could help revolutionize photovoltaics in a world where the demand for renewable energy has never been greater. However, the stability of PQDs in ambient conditions is poor; thus, understanding the degradation mechanisms involved and investigating passivation methods such as encapsulation is of paramount importance if PQD solar cells are to make their way into commercial devices. It is necessary, therefore, to study the reactions of the topmost few atomic layers of PQD films with the atmosphere. During this project, various passivation techniques will be investigated, with emphasis on encapsulation methods, and the materials produced will be characterized using a range of advanced surface spectroscopies, including hard X-ray photoelectron spectroscopy (HAXPES) and near-ambient pressure X-ray photoelectron spectroscopy (NAP-XPS). The work falls under the EPSRC energy theme, and is relevant to condensed matter: electronic structure, materials for energy applications, solar technology and surface science research areas.

有机金属卤化物钙钛矿量子点(PQD)被认为是下一代太阳能电池最有前途的材料之一。PQD具有可调的带隙、强的光吸收系数、高的缺陷容忍度和低的非辐射复合率，可以帮助在对可再生能源的需求从未像现在这样大的世界里为光伏领域带来革命性的变化。然而，PQD在环境条件下的稳定性很差；因此，如果PQD太阳能电池要进入商业设备，了解其退化机理并研究封装等钝化方法是至关重要的。因此，有必要研究PQD薄膜最顶层的几个原子层与大气的反应。在这个项目中，将研究各种钝化技术，重点是封装方法，并将使用一系列先进的表面光谱对所生产的材料进行表征，包括硬X射线光电子能谱(HAXPES)和近环境压力X射线光电子能谱(NAP-XPS)。这项工作属于EPSRC能源主题，涉及凝聚态物质：电子结构、能源应用材料、太阳能技术和表面科学研究领域。