Research of decomposition mechanism of mixed cation-anionic metal halide perovskite material

阴阳离子混合金属卤化物钙钛矿材料分解机理研究

• 批准号: 22KF0363
• 负责人: Qi Yabing
• 金额: $ 1.34万
• 依托单位: Okinawa Institute of Science and Technology Graduate University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2023
• 资助国家: 日本
• 起止时间: 2023-03-08 至 2024-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22KF0363/
• 关键词: Perovskite; self-assembly monolayers; perovskite solar modules; surface passivation; Perovskite passivation; bifacial solar cells

In FY2022 the fellow worked on several research projects and supervised two PhD students. In particular, she worked on three projects: the first focuses on the passivation of the perovskite layer using phenethyl ammonium-halide molecules with the aim to understand the mechanism of these molecules on the perovskite surface, specifically taking into account different perovskite compositions and the effect of different halides (iodine, bromine and chlorine). It is in fact well known in literature that these passivation molecules improve both stability and device performance, but there is no unanimous agreement on the chemical mechanism. The second project focuses on developing new deposition methods for the commonly used self-assembly molecule (2PACz), used as hole transporting material in p-i-n device configuration. This is usually spin-coated and this deposition methos has shown to be effective in making high performing devices but does not allow a uniform coverage on large area devices. We therefore show that alternative deposition methods can be employed, such as thermal evaporation and spray-coating techniques, with the latter being particularly effective for high or even higher device performances compared to the traditional spin-coating method. The fellow also tried to fabricate large area devices (area 22.4cm2) but the performances of control devices remain low due to difficulties in depositing part of the device on large area. The third project is at early stages and involves new electron transporting molecules to be used as self-assembly molecules.

2022 财年，该研究员开展了多个研究项目并指导了两名博士生。她特别从事三个项目：第一个项目侧重于使用苯乙基卤化铵分子对钙钛矿层进行钝化，旨在了解这些分子在钙钛矿表面上的作用机制，特别是考虑到不同的钙钛矿成分和效果不同的卤化物（碘、溴和氯）。事实上，文献中众所周知，这些钝化分子可以提高稳定性和器件性能，但其化学机制尚未达成一致。第二个项目重点是为常用的自组装分子 (2PACz) 开发新的沉积方法，用作 p-i-n 器件配置中的空穴传输材料。这通常是旋涂的，这种沉积方法已被证明可以有效地制造高性能器件，但不允许在大面积器件上均匀覆盖。因此，我们表明可以采用替代沉积方法，例如热蒸发和喷涂技术，与传统旋涂方法相比，后者对于高甚至更高的器件性能特别有效。该研究员还尝试制造大面积器件（面积22.4cm2），但由于在大面积上沉积部分器件的困难，控制器件的性能仍然较低。第三个项目处于早期阶段，涉及用作自组装分子的新电子传输分子。

项目成果

Local Built‐In Field at the Sub‐nanometric Heterointerface Mediates Cascade Electrochemical Conversion of Lithium?sulfur Batteries

亚纳米异质界面的局部内置场介导锂硫电池的级联电化学转化

• DOI: 10.1002/smll.202301755
• 发表时间: 2023
• 影响因子: 13.3
• 作者: Ding Chenfeng;Niu Mang;Cassidy Cathal;Kang Hyung‐Been;Ono Luis K.;Wang Hengyuan;Tong Guoqing;Zhang Congyang;Liu Yuan;Zhang Jiahao;Mariotti Silvia;Wu Tianhao;Qi Yabing
• 通讯作者: Qi Yabing

Holistic Strategies Lead to Enhanced Efficiency and Stability of Hybrid Chemical Vapor Deposition Based Perovskite Solar Cells and Modules

整体策略可提高基于混合化学气相沉积的钙钛矿太阳能电池和模块的效率和稳定性

• DOI: 10.1002/aenm.202300153
• 发表时间: 2023
• 影响因子: 27.8
• 作者: Tong Guoqing;Zhang Jiahao;Bu Tongle;Ono Luis K.;Zhang Congyang;Liu Yuqiang;Ding Chenfeng;Wu Tianhao;Mariotti Silvia;Kazaoui Said;Qi Yabing
• 通讯作者: Qi Yabing

A hole injection monolayer enables cost-effective perovskite light-emitting diodes

空穴注入单层可实现经​​济高效的钙钛矿发光二极管

• DOI: 10.1039/d2tc05491d
• 发表时间: 2023
• 影响因子: 6.4
• 作者: Zhang Congyang;Mariotti Silvia;Ono Luis K.;Ding Chenfeng;Mitrofanov Kirill;Zhang Caiyi;Yuan Shuai;Ji Penghui;Zhang Jiahao;Wu Tianhao;Kabe Ryota;Qi Yabing
• 通讯作者: Qi Yabing

Controllable Anion Exchange on Perovskite Nanocrystal Solid-State Thin Films

钙钛矿纳米晶固态薄膜上的可控阴离子交换

• DOI: 10.1021/acs.jpcc.3c02281
• 发表时间: 2023
• 作者: Zhang Congyang;Ding Chenfeng;Yuan Shuai;Ono Luis K.;Zhang Caiyi;Wu Tianhao;Mariotti Silvia;Ji Penghui;Li Tongtong;Zhang Jiahao;Qi Yabing
• 通讯作者: Qi Yabing

Graphene‐Like Conjugated Molecule as Hole‐Selective Contact for Operationally Stable Inverted Perovskite Solar Cells and Modules

类石墨烯共轭分子作为稳定运行的倒置钙钛矿太阳能电池和模块的空穴选择性接触

• DOI: 10.1002/adma.202300169
• 发表时间: 2023
• 影响因子: 29.4
• 作者: Wu Tianhao;Xu Xiushang;Ono Luis K.;Guo Ting;Mariotti Silvia;Ding Chenfeng;Yuan Shuai;Zhang Congyang;Zhang Jiahao;Mitrofanov Kirill;Zhang Qizheng;Raj Saurav;Liu Xiao;Segawa Hiroshi;Ji Penghui;Li Tongtong;Kabe Ryota;Han Liyuan;Narita Akimitsu;Qi Yabing
• 通讯作者: Qi Yabing