New synthetic routes for the preparation of chalcogenide perovskite materials

制备硫系钙钛矿材料的新合成路线

• 批准号: 2742681
• 金额: --
• 依托单位: Northumbria University
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2742681
• 关键词: New; synthetic; routes; preparation; chalcogenide

Photovoltaic cells are devices that transform light in electricity through a "solar absorber", the material that absorbs photons and transforms it into excited charges, generating electricity. Lead-based perovskites (e.g. MAPbI3) are one of the newest and most promising absorbers: they have high efficiency, are easy to make and based on abundant and cheap materials, even if they suffer poor stability in air.Many other types of perovskites exist, and currently several branches of that family tree are being explored both to overcome stability issues affecting lead-based perovskites and to explore new compositions and different applications. Chalcogenide perovskites (e.g. BaZrS3) have attractive features for their use as photon absorbers, but are difficult to synthesize, especially as thin-films, due high temperature processing requirements. This project will explore new and alternative synthetic routes for the preparation of chalcogenide perovskites and deposit these materials in thin-film form. Fabricating chalcogenide perovskites in both bulk and thin-films will allow thorough characterization of the optoelectronic properties and the implementation of these materials in photovoltaic devices. To achieve this goal, different techniques will be employed, but particular relevance will be given to "dry methods" that do not require solvents. Importantly, this will allow to develop a green, solvent-free method of preparation of materials and devices, with even lower environmental impact of the photovoltaic technology.

光伏电池是一种通过“太阳能吸收器”将光转化为电能的装置，这种材料吸收光子并将其转化为激发态电荷，从而发电。铅基钙钛矿（例如MAPbI3）是最新和最有前途的吸收剂之一：它们效率高，易于制造，并且基于丰富和廉价的材料，即使它们在空气中稳定性差。存在许多其他类型的钙钛矿，目前正在探索该家族树的几个分支，以克服影响铅基钙钛矿的稳定性问题，并探索新的成分和不同的应用。硫系钙钛矿（如BaZrS3）作为光子吸收剂具有吸引人的特性，但由于高温加工要求，难以合成，特别是薄膜。该项目将探索新的和替代的合成路线来制备硫系钙钛矿，并将这些材料沉积成薄膜形式。在散装和薄膜中制造硫系钙钛矿将允许彻底表征光电特性并在光伏器件中实现这些材料。为了实现这一目标，将采用不同的技术，但将特别关注不需要溶剂的“干法”。重要的是，这将允许开发一种绿色，无溶剂的材料和器件制备方法，光伏技术对环境的影响甚至更小。