High-Hole-Mobility Metal–Organic Framework as Dopant-Free Hole Transport Layer for Perovskite Solar Cells

Ruonan Wang; Weikang Yu; Cheng Sun; Kashi Chiranjeevulu; Shuguang Deng; Jiang Wu; Feng Yan; Changsi Peng; Yanhui Lou; Gang Xu; Guifu Zou

doi:10.1186/s11671-021-03643-7

Nanoscale Research Letters (Jan 2022)

High-Hole-Mobility Metal–Organic Framework as Dopant-Free Hole Transport Layer for Perovskite Solar Cells

Ruonan Wang,
Weikang Yu,
Cheng Sun,
Kashi Chiranjeevulu,
Shuguang Deng,
Jiang Wu,
Feng Yan,
Changsi Peng,
Yanhui Lou,
Gang Xu,
Guifu Zou

Affiliations

Ruonan Wang: 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
Weikang Yu: 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
Cheng Sun: 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
Kashi Chiranjeevulu: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences
Shuguang Deng: School for Engineering of Matter, Transport and Energy, Arizona State University
Jiang Wu: Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China
Feng Yan: College of Chemistry, Chemical Engineering and Materials Science, Soochow Universit
Changsi Peng: School of Optoelectronic Science and Engineering and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University
Yanhui Lou: 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
Gang Xu: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences
Guifu Zou: 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

DOI: https://doi.org/10.1186/s11671-021-03643-7
Journal volume & issue: Vol. 17, no. 1
pp. 1 – 9

Abstract

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Abstract 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 Ni3(2,3,6,7,10,11-hexaiminotriphenylene)2 at the gas–liquid interface is transferred onto ITO-coated glass substrate. The Ni3(2,3,6,7,10,11-hexaiminotriphenylene)2 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 Ni3(HITP)2 film can effectively transfer holes from perovskite film to anode. The perovskite solar cells based on Ni3(HITP)2 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. Graphical Abstract

Published in Nanoscale Research Letters

ISSN: 1931-7573 (Print); 1556-276X (Online)
Publisher: SpringerOpen
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.springer.com/journal/11671

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