DataVXACS Energy LettersPaper
journal article·2025-12-12

Boosting Perovskite/Silicon Tandem Solar Cells with Dual-Gradient Tungsten-Doped Indium Oxide (IWO) Interlayers

Yutao Wang, Pengxu Chen, Fei Wang, Shuangbiao Xia, Yuhui Ji, Yunren Luo, Jianliang Wang, Zhenzhu Zhao, Junlin Du, Na Wang, FanYing Meng, Chen Yang, Hanlin Hu, Jian Yu, Jingjing Xu, Hongjun Cao, Honghai Xiao, Sijie Wei, Ke Xin Yao, Jiakai Liu, Zhengxin Liu, Wenzhu Liu, Liping Zhang

ACS Energy Letters· Volume 10· Issue 12
Publisher page
Source abstract

Abstract

The alignment of work function between transparent conducting oxides and charge transport layers is critical for the fill factor in perovskite/silicon tandem solar cells. Silvaco TCAD simulations show that a higher work function in tungsten-doped indium oxide (IWO) improves hole extraction in the perovskite subcell. In comparison, a lower work function enhances electron transport in the silicon subcell. To address this, a dual IWO interlayer with a graded work function is engineered via reactive plasma deposition by tuning the oxygen-to-argon flow rate ratio. This resolves interfacial mismatches and promotes carrier recombination. Furthermore, the optimized IWO surface facilitates improved anchoring with [4-(3,6-dimethoxy-9H-carbazol-9-yl)butyl]phosphonic acid (MeO-4PACz), thereby enhancing the quality of the perovskite layer. As a result, the optimized device achieved a power conversion efficiency (PCE) of 31.91%. This silicon-centric approach offers a scalable fabrication route for high-efficiency tandem solar cells.
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materialsMaterials processing

OpenAlex topics: Perovskite Materials and Applications · Silicon and Solar Cell Technologies · Organic Light-Emitting Diodes Research

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

Affiliations

Research Center for New Energy Technology (RCNET), National Key Laboratory of Materials for Integrated Circuits, Shanghai Institute of Microsystem and Information Technology (SIMIT)

Chinese Academy of Sciences (CAS)

College of Materials Science and Opto-Electronic Technology

University of Chinese Academy of Sciences (UCAS)

School of New Energy and Materials

Southwest Petroleum University

Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments

Chinese Academy of Sciences

Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic University, 7098 Liuxian Boulevard, Shenzhen 518055, China

School of Mechatronic Engineering and Automation

Shanghai University

Shanghai Science and Technology Exchange Center

Shanghai Nagamori Machinery Company

Morimatsu (Jiangsu) Heavy Industry Company

Multiscale Porous Materials Centre, Institute of Advanced Interdisciplinary Studies, State Key Laboratory of Coal Mine Disaster Dynamics and Control

Chongqing University

Funding

the National Key Research and Development Program of China

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