DataVXSolar RRLPaper
journal article·2020-04

Low‐Temperature‐Processed WOx as Electron Transfer Layer for Planar Perovskite Solar Cells Exceeding 20% Efficiency

Cong Chen, Yue Jiang, Yehui Wu, Jiali Guo, Xiangyu Kong, Xiayan Wu, Yuzhu Li, Dongfeng Zheng, Sujuan Wu, Xingsen Gao, Zhipeng Hou, Guofu Zhou, Yiwang Chen, Jun-Ming Liu, Krzysztof Kempa, Jinwei Gao

Solar RRL· Volume 4· Issue 4
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Source abstract

Abstract

Low‐temperature, solution‐processed metal oxides are of great interest as alternative materials for electron transport layers in perovskite solar cells. WOx is a promising candidate that could truly enable low‐temperature (<100 °C) processing. However, its amorphous‐state form typically obtained with the solution process suffers from high defect density. This causes large charge recombination, and consequently significant deterioration of the solar cell efficiency. Herein, an ultra‐low‐temperature processed (50 °C) nanocrystalline WOx as the electron transport layer, free of this problem, is demonstrated. This material is obtained by the reaction of tungsten chloride with hexanol, which induces transformation of the precursor solution into stable colloidal particles. The best solar cell, with the WOx electron transport layer, achieved an efficiency of 20.77%, which is a record performance for this class of perovskite solar cells.
Source: crossref · Quality: baseline

Research context

NanomaterialsElectronic materials

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

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

Affiliations

Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Optical Information Materials and Technology Academy of Advanced Optoelectronics South China Normal University Guangzhou 510006 China

Guangdong Provincial Key Laboratory of Optical Information Materials and Technology and Institute of Electronic Paper Displays South China Academy of Advanced Optoelectronics South China Normal University Guangzhou 510006 China

Institute of Polymers and Energy Chemistry College of Chemistry Nanchang University Nanchang 330031 China

Laboratory of Solid State Microstructures Nanjing University Nanjing 210093 China

Department of Physics Boston College Chestnut Hill MA 02467 USA

Funding

National Natural Science Foundation of China · Guangdong Medical Research Foundation

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