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Effect of Metal-Precursor Stacking Order on Volume-Defect Formation in CZTSSe Thin Film: Formation Mechanism of Blisters and Nanopores

Title
Effect of Metal-Precursor Stacking Order on Volume-Defect Formation in CZTSSe Thin Film: Formation Mechanism of Blisters and Nanopores
Author(s)
Kim, Se-YunKim, Seung-HyunSon, Dae-HoYoo, HyesunKim, SeongyeonKim, SammiKim, Young-IllPark, Si-NaeJeon, Dong-HwanLee, JaebaekJo, Hyo-JeongSung, Shi-JoonHwang, Dae-KueYang, Kee-JeongKim, Dae-HwanKang, Jin-Kyu
Issued Date
2022-06
Citation
ACS Applied Materials & Interfaces, v.14, no.27, pp.30649 - 30657
Type
Article
Author Keywords
blistermetal precursorCZTSSestacking ordernanopore
Keywords
PHOTOVOLTAIC PROPERTIESCU2ZNSNS4PERFORMANCEEVOLUTIONSELENIZATIONFABRICATIONQUALITYCUINSE2GRAIN-GROWTHSOLAR-CELLS
ISSN
1944-8244
Abstract
In this study, we investigated the effect of the stacking order of metal precursors on the formation of volume defects, such as blisters and nanopores, in CZTSSe thin-film solar cells. We fabricated CZTSSe thin films using three types of metal-precursor combinations, namely, Zn/Cu/Sn/Mo, Cu/Zn/Sn/Mo, and Sn/Cu/Zn/Mo, and studied the blister formation. The blister-formation mechanism was based on the delamination model, taking into consideration the compressive stress and adhesion properties. A compressive stress could be induced during the preferential formation of a ZnSSe shell. Under this stress, the adhesion between the ZnSSe film and the Mo substrate could be maintained by the surface tension of a metallic liquid phase with good wettability, or by the functioning of ZnSSe pillars as anchors, depending on the type of metal precursor used. Additionally, the nanopore formation near the back-contact side was found to be induced by the columnar microstructure of the metal precursor with the Cu/Zn/Mo stacking order and its dezincification. Based on the two volume-defect-formation mechanisms proposed herein, further development of volume-defect-formation suppression technology is expected to be made. © 2022 American Chemical Society.
URI
http://hdl.handle.net/20.500.11750/16963
DOI
10.1021/acsami.2c01892
Publisher
American Chemical Society
Related Researcher
  • 성시준 Sung, Shi-Joon
  • Research Interests Compound Semiconductor Materials & Processes
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Appears in Collections:
Division of Energy & Environmental Technology 1. Journal Articles
Division of AI, Big data and Block chain 1. Journal Articles
Research Center for Thin Film Solar Cells 1. Journal Articles

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