journal article·2025-01-10

Inert Interlayer Secures Flexible Monolithic Perovskite/CIGS Tandem Solar Cells with Efficiency Beyond 21%

Weizhong Tian, Libing Yao, Enbing Bi, Shaochen Zhang, Yuan Tian, Jingjing Zhou, Xiaonan Wang, Mustafa Haider, Jingjing Xue, Rui Wang

ACS Energy Letters· Volume 10· Issue 1
Publisher page

Abstract

Since mature CIGS products inherently bear an aluminum-doped ZnO (AZO) transparent conductive layer, whether it is necessary to deposit another transparent conductive thin layer using other materials such as indium tin oxide (ITO), indium zinc oxide (IZO) still remains a basic open question. Here we demonstrate that deposition of an inert interlayer preceding fabrication of the perovskite top cell is essentially warranted because the AZO layer is shown to be destructive toward the perovskite thin films. Flexible monolithic perovskite/CIGS tandem photovoltaics with an IZO interlayer achieved a high-performing efficiency of 21.24% with substantially improved stability at elevated temperatures. The unencapsulated target tandem solar cell retained 80% of its initial efficiency after 120 min of continuous maximum power (MPP) point operation at ∼90 °C in ambient air, while the control tandem device without the IZO interlayer failed after ∼25 min of operation under the same conditions.
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Research context

OpenAlex topics: Perovskite Materials and Applications · Chalcogenide Semiconductor Thin Films · Quantum Dots Synthesis And Properties

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

Affiliations

State Key Laboratory of Silicon Materials and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

School of Engineering and Westlake Institute for Advanced Study, Westlake University, Hangzhou 310024, China

Advanced Photovoltaic Technology Research Institute of Xuancheng, Xuancheng 310000, China

Shangyu Institute of Semiconductor Materials, Shaoxing 312300, China

Research Center for Industries of the Future, Westlake University, Hangzhou 310024, China

Division of Solar Energy Conversion and Catalysis at Westlake University, Zhejiang Baima Lake Laboratory Co., Ltd., Hangzhou 310024, China

Funding

National Natural Science Foundation of China · Natural Science Foundation of Zhejiang Province · Anhui Province major industrial innovation project

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