RII Track-4: Novel Electrochemistry in Hybrid Organic-Inorganic Perovskite Materials

RII Track-4：有机-无机杂化钙钛矿材料中的新型电化学

• 批准号: 1929019
• 负责人: Yuanyuan Zhou
• 金额: $ 23.71万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-12-01 至 2020-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1929019&HistoricalAwards=false
• 关键词: RII; Track; Novel; Electrochemistry; Hybrid

Fundamental understandings of new semiconductor materials are key to the development of future functional electronics for various smart applications. Hybrid organic-inorganic halide perovskites (HOIP) have recently emerged as a new family of semiconductor materials with exceptional promise for various functional electronics such as solar cells and light-emitting devices. However, the fundamental solid-state electrochemistry of HOIPs has been less understood, which retards the progress of perovskite technologies. This project addresses this challenge by combining the unique expertise and capacity from Brown University and National Renewable Energy Laboratory. Through the collaborative activities, a novel research platform for exploring the HOIP electrochemistry will be established, which will lead to decisive answers to many long-standing mysteries in the perovskite field and thus have great impacts on the development of clean-energy technologies. Furthermore, this project will contribute to significant enhancement in the PI's research capacity and overall research infrastructure in Rhode Island. It will also provide opportunities for undergraduate and graduate students at Brown University and other institutes in Rhode Island to explore more science subjects in the future. The goal of this project is to elucidate the key electrochemistry phenomena in hybrid organic-inorganic halide perovskite (HOIP) materials and their correlation to the performance of perovskite solar cells (PSCs). Attainment of this goal will be of vital importance for understanding many exceptional behaviors (e.g. giant switchable photovoltaic effects, photocurrent hysteresis) that have been observed in HOIPs. It will also have strong implication for extending the applications of HOIPs to new electronics and iontronics. A new research platform for clarifying the intrinsic electrochemical properties of HOIPs will be established by combining classical electrochemistry methods (based on Tubandt cell) and advanced materials-characterization approaches. This will contribute to the determination of exact migrating ion types, ion-migration tolerance mechanisms, and ion reactivity of HOIPs with other related device contact materials. Further, the effect of microstructures on the electrochemistry of HOIPs will be investigated, which will be correlated to the performance of PSCs. Based on all these fundamental understandings, engineered microstructures of HOIPs will be synthesized for controlled electrochemical behavior and enhanced PSC performance. The established methodology based on this research will have far-reaching impacts on understanding the broad family of mixed ion-electronic semiconductors and their device applications.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

对新半导体材料的基本理解是为各种智能应用开发未来功能电子产品的关键。杂交有机无机卤化物钙钛矿（HOIP）最近已成为一个新的半导体材料家族，对各种功能电子设备（例如太阳能电池和发光设备）具有非凡的希望。但是，HOIP的基本固态电化学的理解较低，这阻碍了钙钛矿技术的进步。该项目通过结合布朗大学和国家可再生能源实验室的独特专业知识和能力来解决这一挑战。通过协作活动，将建立一个新型的研究平台，用于探索HOIP电化学，这将为钙钛矿领域中许多长期存在的谜团提供果断的答案，从而对清洁能源技术的发展产生重大影响。此外，该项目将有助于大幅提高罗德岛州PI的研究能力和整体研究基础设施。它还将为布朗大学和罗德岛州其他学院的本科生和研究生提供机会，以探索将来更多的科学学科。该项目的目的是阐明混合有机盐盐钙钛矿（HOIP）材料中的关键电化学现象及其与钙钛矿太阳能电池（PSC）性能的相关性。实现这一目标对于理解许多在HOIP中观察到的许多特殊行为（例如，巨型可切换光伏效应，光电流滞后）至关重要。这也将对扩展HOIP的应用到新的电子和电离基质技术方面有很大的影响。通过将经典的电化学方法（基于图班特细胞）和先进的材料 - 特征化方法相结合，将建立一个新的研究平台，用于阐明HOIP的内在电化学特性。这将有助于确定精确的离子类型，离子迁移耐受性机制和HOIP与其他相关设备接触材料的离子反应性。此外，将研究微结构对HOIP电化学的影响，这将与PSC的性能相关。基于所有这些基本理解，将合成HOIP的工程微观结构，以进行控制的电化学行为和增强的PSC性能。基于这项研究的既定方法将对理解广泛的混合电子半导体及其设备应用的广泛家庭产生深远的影响。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的智力优点和更广泛的审查标准通过评估来进行评估的。

项目成果

Perovskite Solar Cells with Enhanced Fill Factors Using Polymer-Capped Solvent Annealing

• DOI: 10.1021/acsaem.0c00854
• 发表时间: 2020-08-24
• 期刊: ACS APPLIED ENERGY MATERIALS
• 影响因子: 6.4
• 作者: Kong, Jaemin;Wang, Hanyu;Taylor, Andre D.
• 通讯作者: Taylor, Andre D.

Anomalous 3D nanoscale photoconduction in hybrid perovskite semiconductors revealed by tomographic atomic force microscopy

• DOI: 10.1038/s41467-020-17012-y
• 发表时间: 2020-07-03
• 期刊: NATURE COMMUNICATIONS
• 影响因子: 16.6
• 作者: Song, Jingfeng;Zhou, Yuanyuan;Huey, Bryan D.
• 通讯作者: Huey, Bryan D.

Sub-1.4eV bandgap inorganic perovskite solar cells with long-term stability

• DOI: 10.1038/s41467-019-13908-6
• 发表时间: 2020-01-09
• 期刊: NATURE COMMUNICATIONS
• 影响因子: 16.6
• 作者: Hu, Mingyu;Chen, Min;Zhou, Yuanyuan
• 通讯作者: Zhou, Yuanyuan

Mechanisms of exceptional grain growth and stability in formamidinium lead triiodide thin films for perovskite solar cells

• DOI: 10.1016/j.actamat.2020.03.036
• 发表时间: 2020-07
• 期刊: Acta Materialia
• 影响因子: 9.4
• 作者: Srinivas K. Yadavalli;Zhenghong Dai;Mingyu Hu;Qingshun Dong;Wenhao Li;Yuanyuan Zhou;R. Zia;N. Padtur

Effect of Grain Size on the Fracture Behavior of Organic-Inorganic Halide Perovskite Thin Films for Solar Cells

• DOI: 10.1016/j.scriptamat.2020.03.044
• 发表时间: 2020-08-01
• 期刊: SCRIPTA MATERIALIA
• 影响因子: 6
• 作者: Dai, Zhenghong;Yadavalli, Srinivas K.;Padture, Nitin P.
• 通讯作者: Padture, Nitin P.