DataVXACS Applied Materials & InterfacesPaper
journal article·2016-05-04

Low-Temperature TiOx Compact Layer for Planar Heterojunction Perovskite Solar Cells

Zonghao Liu, Qi Chen, Ziruo Hong, Huanping Zhou, Xiaobao Xu, Nicholas De Marco, Pengyu Sun, Zhixin Zhao, Yi-Bing Cheng, Yang Yang

ACS Applied Materials & Interfaces· Volume 8· Issue 17
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Source abstract

Abstract

Here, we demonstrate an effective low-temperature approach to fabricate a uniform and pinhole-free compact TiO2 layer for enhancing photovoltaic performance of perovskite solar cells. TiCl4 was used to modify TiO2 for efficient charge generation and significantly reduced recombination loss. We found that a TiO2 layer with an appropriate TiCl4 treatment possesses a smooth surface with full coverage of the conductive electrode. Further studies on charge carrier dynamics confirmed that the TiCl4 treatment improves the contact of the TiO2/perovskite interface, facilitating charge extraction and suppressing charge recombination. On the basis of the treatment, we improved the open circuit voltage from 1.01 V of the reference cell to 1.08 V, and achieved a power conversion efficiency of 16.4%.
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Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Chalcogenide Semiconductor Thin Films

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P.R. China

Department of Materials Science and Engineering, University of California, Los Angeles, California 90095, United States

Department of Materials Engineering, Monash University, Melbourne, Australia

Funding

Ministry of Education of the People's Republic of China · Ministry of Science and Technology of the People's Republic of China · Air Force Office of Scientific Research · Office of Naval Research · Huazhong University of Science and Technology · Division of Electrical, Communications and Cyber Systems · Director Fund, Wuhan National Laboratory for Optoelectronics

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