Optoelectronic properties and stability of next-generation perovskite materials for solar cells
下一代太阳能电池钙钛矿材料的光电性能和稳定性
基本信息
- 批准号:2752067
- 负责人:
- 金额:--
- 依托单位:
- 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:
- 关键词:
项目摘要
Organic-inorganic metal halide perovskites (ABX3 stoichiometry) have made a remarkably successful entry into the field of next-generation photovoltaic cells. A rapidly intensifying research activity has since led to certified power conversion efficiencies now exceeding 25% for single-junction thin-film solar cells. While competing technologies currently exist for such devices, the world's growing need for energy supply, lighting and display technologies has created an increasing desire for low-cost, high-efficiency solutions. Continued advances in photovoltaic devices, in particular, are urgently required to address climate change and energy security, which are arguably the greatest challenges to be faced by mankind over the coming century.This Industrial CASE Studentship will focus on critical issues remaining to be resolved regarding the optoelectronic performance and stability of metal halide perovskites.Factors that influence the efficient operation of perovskite solar cells will be elucidated, including mechanisms for electron-phonon coupling, charge-carrier mobility and recombination, light emission and re-absorption. In addition, the stability of these materials will be enhanced through critical examination of factors such as ionic migration and chemical conversion, e.g. under atmospheric conditions. Fundamental photon-to-charge conversion processes will be explored using a combination of ultra-fast optical techniques, e.g. transient absorption, photoluminescence up-conversion and THz pump-probe spectroscopy, while chemical conversions and material instabilities will be examined with x-ray diffraction and electron microscopies. These studies will feed directly into collaborative efforts aimed at propelling forward the creation of commercially available perovskite solar cells, addressing stability, band-gap tunability, lead-free perovskites, trap-free materials, material morphology control and multi-junction device structures. The project will benefit from the complementary expertise of Prof Herz's group at the University of Oxford on fundamental materials analysis, and of the project partner, Oxford Photovoltaics, who are leaders in perovskite solar technology and are currently exploring their use, for example, integrated in tandem with standard silicon solar cells.The proposed research clearly fits within the EPSRC's portfolio, targeting identified Grand Challenges in Physics (Nanoscale Design of Functional Materials) and Chemistry (Directed Assembly of Extended Structures with Targeted Properties). The proposed programme also clearly falls into the EPSRC Themes of Physical Sciences, Energy & Manufacturing the Future; and the Areas of Materials for Energy Applications, Computational and Theoretical Chemistry and Solar Technology.
有机无机金属卤化物钙钛矿(ABX3化学计量计)已取得了非常成功的进入下一代光伏细胞领域的成功。此后,一项快速加强的研究活动已导致单连接薄膜太阳能电池的认证能量转换效率超过25%。尽管目前针对此类设备存在竞争性技术,但世界对能源供应,照明和展示技术的需求不断增长,对低成本,高效的解决方案产生了越来越多的渴望。尤其需要迫切需要在光伏设备的持续进展来解决气候变化和能源安全,这可以说是人类在未来世纪面临的最大挑战。该工业案例的学生将集中在关键问题上,将集中在尚待解决的关键问题上。包括电子 - 音波耦合,电荷载体迁移率和重组,光发射和重新吸收的机制。另外,通过对诸如离子迁移和化学转化等因素的批判性检查,将增强这些材料的稳定性,例如在大气条件下。将使用超快速光学技术的组合(例如瞬时吸收,光致发光上转换和THZ泵探测光谱,而化学转换和材料不稳定性将使用X射线衍射和电子显微镜检查。这些研究将直接介入旨在推动商业可用的钙钛矿太阳能电池创建的协作努力,以解决稳定性,带隙可调性,无铅钙钛矿,无陷阱材料,材料形态控制和多功能设备结构。该项目将受益于牛津大学在基本材料分析上的补充专业知识,以及项目合作伙伴牛津摄影学的牛津摄影技术,他们是佩洛维斯基特太阳能技术的领导者,目前正在探索其使用,例如,他们的使用,例如,与标准的硅细胞合作,与标准硅的构建中的良好质量构成了epsrio的定义,该质量是epsrio的质量构成的,该质量是epsrio的定义。功能材料)和化学(具有针对性特性的扩展结构的定向组装)。拟议的计划显然也属于EPSRC的物理科学,能源和制造未来的主题。以及能源应用,计算和理论化学和太阳能技术的材料领域。
项目成果
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