Collaborative Research: Correlating Optoelectronic Properties with Defects in One-Dimensional Perovskite Nanocrystals

合作研究：将光电特性与一维钙钛矿纳米晶体的缺陷相关联

• 批准号: 1903990
• 负责人: Zhiqun Lin
• 金额: $ 22.98万
• 依托单位: Georgia Tech Research Corporation
• 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: 2019-09-01 至 2022-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1903990&HistoricalAwards=false
• 关键词: Collaborative; Research; Correlating; Optoelectronic; Properties

Recent research has witnessed rapid advances in metal halide perovskite materials for applications in solar cells, light-emitting diodes, photodetectors, lasers, and scintillators for spectroscopic gamma-ray detection and/or X-ray imaging due to their superior optoelectronic properties. Defects in perovskites can limit the transport of charge carriers and change the carrier concentrations. The ability to understand and recognize defects in perovskites is the key to control the performance in perovskite-based devices. This collaborative research aims to relate optoelectronic properties with defects in one-dimensional perovskite nanocrystals. These nanocrystals can be exploited either individually or as building blocks in the assembly of nanostructured materials and devices. These devices would be used in energy and biomedical applications, including optoelectronics, photonics, sensors, catalysis, nanotechnology, and biotechnology, among other emerging areas. As such, it transitions fundamental scientific discoveries into useful technologies that benefit society. This project offers opportunities for underrepresented female and minority undergraduate students as well as high school teachers and students to participate in nanomaterials research at both Georgia Tech and California State University-Bakersfield. In one-dimensional (1D) metal halide perovskites, defects, if present, are expected to exert a pronounced influence on the carrier transport behaviors and thus the electronic and optoelectronic properties. It is therefore of crucial importance to identify, understand, control, and possibly utilize defects in perovskite crystals. This collaborative research between Georgia Tech and California State University-Bakersfield seeks to craft 1D perovskite nanocrystals with precisely controlled dimensions, scrutinize their dimension-dependent optical properties, and correlate the resulting optoelectronic properties of these perovskite nanocrystals with defects via directly imaging defects and local transport barriers under optical excitations by capitalizing on a contactless dielectric force microscopy technique. The systematic investigation into the optical properties and defect characteristics of these monodisperse 1D perovskite nanocrystals enables the development of high-quality perovskite nanomaterials with desired optoelectronic properties and minimal deleterious defects, thereby rendering their use in a gamut of optoelectronic devices with improved performance.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.

最近的研究见证了金属卤化物钙钛矿材料由于其优异的光电特性而在太阳能电池、发光二极管、光电探测器、激光器和用于光谱伽马射线检测和/或X射线成像的闪烁体中的应用取得了快速进展。钙钛矿的缺陷会限制载流子的传输并改变载流子浓度。理解和识别钙钛矿缺陷的能力是控制钙钛矿器件性能的关键。这项合作研究旨在将光电特性与一维钙钛矿纳米晶体的缺陷联系起来。这些纳米晶体可以单独使用，也可以作为纳米结构材料和设备组装中的构建块。这些设备将用于能源和生物医学应用，包括光电子学、光子学、传感器、催化、纳米技术和生物技术以及其他新兴领域。因此，它将基础科学发现转化为造福社会的有用技术。该项目为代表性不足的女性和少数族裔本科生以及高中教师和学生提供参与佐治亚理工学院和加州州立大学贝克斯菲尔德分校纳米材料研究的机会。在一维（1D）金属卤化物钙钛矿中，缺陷（如果存在）预计会对载流子传输行为产生显着影响，从而对电子和光电性能产生显着影响。因此，识别、理解、控制并可能利用钙钛矿晶体中的缺陷至关重要。佐治亚理工学院和加州州立大学贝克斯菲尔德分校之间的这项合作研究旨在制造尺寸精确控制的一维钙钛矿纳米晶体，仔细检查其与尺寸相关的光学特性，并利用直接成像缺陷和光学激发下的局部传输势垒，将这些钙钛矿纳米晶体的光电特性与缺陷相关联。 非接触介电力显微镜技术。对这些单分散一维钙钛矿纳米晶体的光学性质和缺陷特征的系统研究使得能够开发出具有所需光电性质和最小有害缺陷的高质量钙钛矿纳米材料，从而使其在各种光电器件中的使用具有改进的性能。该奖项反映了 NSF 的法定使命，并具有 通过使用基金会的智力优点和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Synergistic Cascade Carrier Extraction via Dual Interfacial Positioning of Ambipolar Black Phosphorene for High‐Efficiency Perovskite Solar Cells

• DOI: 10.1002/adma.202000999
• 发表时间: 2020-05
• 期刊: Advanced Materials
• 影响因子: 29.4
• 作者: Meng Zhang;M. Ye;Wenlong Wang;Chunyuan Ma;Shun Wang;Qiliang Liu;T. Lian;Jinsong Huang

Multifunctional quantum dot materials for perovskite solar cells: Charge transport, efficiency and stability

• DOI: 10.1016/j.nantod.2021.101286
• 发表时间: 2021-10
• 期刊: Nano Today
• 影响因子: 17.4
• 作者: M. Ye;Gill M. Biesold;Meng Zhang;Weiguo Wang;Tian Bai;Zhiqun Lin

Rapid Capillary‐Assisted Solution Printing of Perovskite Nanowire Arrays Enables Scalable Production of Photodetectors

钙钛矿纳米线阵列的快速毛细管辅助溶液打印实现光电探测器的规模化生产

• DOI: 10.1002/ange.202004912
• 发表时间: 2020
• 期刊: Angewandte Chemie
• 作者: Pan, Shuang;Zou, Haiyang;Wang, Aurelia C.;Wang, Zewei;Yu, Jiwoo;Lan, Chuntao;Liu, Qiliang;Wang, Zhong Lin;Lian, Tianquan;Peng, Juan
• 通讯作者: Peng, Juan