Highly Stable and Enhanced Performance of p–i–n Perovskite Solar Cells via Cuprous Oxide Hole-Transport Layers

Tung-Han Chuang; Yin-Hung Chen; Shikha Sakalley; Wei-Chun Cheng; Choon Kit Chan; Chih-Ping Chen; Sheng-Chi Chen

doi:10.3390/nano13081363

Nanomaterials (Apr 2023)

Highly Stable and Enhanced Performance of p–i–n Perovskite Solar Cells via Cuprous Oxide Hole-Transport Layers

Tung-Han Chuang,
Yin-Hung Chen,
Shikha Sakalley,
Wei-Chun Cheng,
Choon Kit Chan,
Chih-Ping Chen,
Sheng-Chi Chen

Affiliations

Tung-Han Chuang: Institute of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan
Yin-Hung Chen: Institute of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan
Shikha Sakalley: Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
Wei-Chun Cheng: Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
Choon Kit Chan: Mechanical Engineering Department, Faculty of Engineering and Quantity Surveying, INTI International University, Nilai 71800, Negeri Sembilan, Malaysia
Chih-Ping Chen: Department of Materials Engineering and Center for Plasma and Thin Film Technologies, Ming Chi University of Technology, New Taipei City 243, Taiwan
Sheng-Chi Chen: Department of Materials Engineering and Center for Plasma and Thin Film Technologies, Ming Chi University of Technology, New Taipei City 243, Taiwan

DOI: https://doi.org/10.3390/nano13081363
Journal volume & issue: Vol. 13, no. 8
p. 1363

Abstract

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Solar light is a renewable source of energy that can be used and transformed into electricity using clean energy technology. In this study, we used direct current magnetron sputtering (DCMS) to sputter p-type cuprous oxide (Cu2O) films with different oxygen flow rates (fO2) as hole-transport layers (HTLs) for perovskite solar cells (PSCs). The PSC device with the structure of ITO/Cu2O/perovskite/[6,6]-phenyl-C61-butyric acid methyl ester (PC61BM)/bathocuproine (BCP)/Ag showed a power conversion efficiency (PCE) of 7.91%. Subsequently, a high-power impulse magnetron sputtering (HiPIMS) Cu2O film was embedded and promoted the device performance to 10.29%. As HiPIMS has a high ionization rate, it can create higher density films with low surface roughness, which passivates surface/interface defects and reduces the leakage current of PSCs. We further applied the superimposed high-power impulse magnetron sputtering (superimposed HiPIMS) derived Cu2O as the HTL, and we observed PCEs of 15.20% under one sun (AM1.5G, 1000 Wm−2) and 25.09% under indoor illumination (TL-84, 1000 lux). In addition, this PSC device outperformed by demonstrating remarkable long-term stability via retaining 97.6% (dark, Ar) of its performance for over 2000 h.

Published in Nanomaterials

ISSN: 2079-4991 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry
Website: https://www.mdpi.com/journal/nanomaterials

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