Quantum-Assisted Photoelectric Effects in Perovskite Solar Cells

钙钛矿太阳能电池中的量子辅助光电效应

基本信息

批准号：
20K15135
负责人：
王映樵
金额：
$ 2.66万
依托单位：
National Institute for Materials Science
依托单位国家：
日本
项目类别：
Grant-in-Aid for Early-Career Scientists
财政年份：
2020
资助国家：
日本
起止时间：
2020-04-01 至 2022-03-31
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-20K15135/
关键词：
perovskite solar cell 2D/3D perovskite Interface Band mapping STM photodetector quantum dot nanosheet Photovoltaics Energy conversion UV stability Perovskite solar cell Quantum dot 2D nanosheet Photovoltaic

项目摘要

Graded 2D perovskite capping shells with continuously upshifting valence bands, produced by tailored dimensional engineering, can effectively extract holes from 3D perovskite cores. Real-space observation of electronic structures will fully reveal the operating mechanisms of 2D/3D hybrid perovskite solar cells (PSCs). In this financial year, the light-modulated scanning tunneling microscopy visualizes the cross-sectional band alignment across 2D (C4H9NH3)2(CH3NH3)n-1PbnI3n+1/3D CH3NH3PbI3 stacked perovskites. By systematically analyzing their electronic configuration, the mixed-dimensional perovskite band structure along the vertical 3D-to-2D direction can be spatially resolved. Remarkably, the electric field in the 2D perovskite is larger under light illumination than under dark conditions, resulting in an increase in the concentration of holes and electrons distributed in the 2D and 3D perovskites, respectively. Benefiting from this electronic reconstruction, charge recombination is suppressed, thereby significantly promoting the 2D/3D PSC performance. Moreover, our method opens an avenue for direct, local mapping of optoelectronic device energy levels. (Nano Energy, 2021, 89, 106362)

由定制的尺寸工程产生的，具有连续上升的价带的2D钙钛矿上限壳可以有效地从3D钙钛矿核心提取孔。对电子结构的真实空间观察将充分揭示2D/3D混合钙钛矿太阳能电池（PSC）的工作机制。在这个财政年度，轻度调制的扫描隧道显微镜可视化2D（C4H9NH3）2（CH3NH3）N-1PBNI3N+1/3D CH3NH3PBI3堆叠perovskites的横截面带对齐。通过系统地分析其电子构型，可以在空间上解析沿垂直3D到2D方向的混合尺寸钙钛矿带结构。值得注意的是，在光照明下，二维钙钛矿中的电场比在黑暗条件下大，导致分布在2d和3d perovskites中的孔和电子的浓度增加。受益于这种电子重建，抑制了电荷重组，从而显着促进了2D/3D PSC性能。此外，我们的方法开辟了一条直接的光电设备能量局部局部映射的途径。（Nano Energy，2021，89，106362）

项目成果

期刊论文数量（14）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Quantum-assisted photoelectric gain effects

量子辅助光电增益效应

DOI：
发表时间：
期刊：
影响因子：
0
作者：
通讯作者：

Visualizing band alignment across 2D/3D perovskite heterointerfaces of solar cells with light-modulated scanning tunneling microscopy

DOI：
10.1016/j.nanoen.2021.106362
发表时间：
2021-11
期刊：
Nano Energy
影响因子：
17.6
作者：
Po‐Cheng Huang;Shao-Ku Huang;Tingrun Lai;M. Shih;H. Hsu;Chun-Hsiang Chen;Cheng‐Chieh Lin;Chun-Hao Chiang;Chi Ying Lin;K. Tsukagoshi;Chun‐Wei Chen;Y. Chiu;S. Tsay;Ying-Chiao Wang
通讯作者：
Po‐Cheng Huang;Shao-Ku Huang;Tingrun Lai;M. Shih;H. Hsu;Chun-Hsiang Chen;Cheng‐Chieh Lin;Chun-Hao Chiang;Chi Ying Lin;K. Tsukagoshi;Chun‐Wei Chen;Y. Chiu;S. Tsay;Ying-Chiao Wang

Self-powered UV photodetectors with ultrahigh air stability based on a 2D coordination nanosheet

基于二维配位纳米片的具有超高空气稳定性的自供电紫外光电探测器