Wang Ruonan, Yu Weikang, Sun Cheng, Chiranjeevulu Kashi, Deng Shuguang, Wu Jiang, Yan Feng, Peng Changsi, Lou Yanhui, Xu Gang, Zou Guifu
College of Energy, Soochow Institute for Energy and Materials Innovations, and Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215123, People's Republic of China.
School of Resources Environmental and Chemical Engineering, Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China.
Nanoscale Res Lett. 2022 Jan 4;17(1):6. doi: 10.1186/s11671-021-03643-7.
A dopant-free hole transport layer with high mobility and a low-temperature process is desired for optoelectronic devices. Here, we study a metal-organic framework material with high hole mobility and strong hole extraction capability as an ideal hole transport layer for perovskite solar cells. By utilizing lifting-up method, the thickness controllable floating film of Ni(2,3,6,7,10,11-hexaiminotriphenylene) at the gas-liquid interface is transferred onto ITO-coated glass substrate. The Ni(2,3,6,7,10,11-hexaiminotriphenylene) film demonstrates high compactness and uniformity. The root-mean-square roughness of the film is 5.5 nm. The ultraviolet photoelectron spectroscopy and the steady-state photoluminescence spectra exhibit the Ni(HITP) film can effectively transfer holes from perovskite film to anode. The perovskite solar cells based on Ni(HITP) as a dopant-free hole transport layer achieve a champion power conversion efficiency of 10.3%. This work broadens the application of metal-organic frameworks in the field of perovskite solar cells.
光电器件需要一种具有高迁移率和低温工艺的无掺杂空穴传输层。在此，我们研究了一种具有高空穴迁移率和强空穴提取能力的金属有机框架材料，作为钙钛矿太阳能电池的理想空穴传输层。通过提拉法，将气液界面处厚度可控的Ni(2,3,6,7,10,11-六亚氨基三亚苯)漂浮膜转移到涂有ITO的玻璃基板上。Ni(2,3,6,7,10,11-六亚氨基三亚苯)膜表现出高致密性和均匀性。该膜的均方根粗糙度为5.5 nm。紫外光电子能谱和稳态光致发光光谱表明，Ni(HITP)膜能有效地将空穴从钙钛矿膜转移到阳极。基于Ni(HITP)作为无掺杂空穴传输层的钙钛矿太阳能电池的最高功率转换效率达到10.3%。这项工作拓宽了金属有机框架在钙钛矿太阳能电池领域的应用。
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