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저자정보
Awet Mana Amare (Korea Institute of Energy Research (KIER)) Inchan Hwang (Korea Institute of Energy Research (KIER)) Inyoung Jeong (Korea Institute of Energy Research (KIER)) Joo Hyung Park (Korea Institute of Energy Research (KIER)) Jin Gi An (Korea Institute of Energy Research (KIER)) Soomin Song (Korea Institute of Energy Research (KIER)) Young-Joo Eo (Korea Institute of Energy Research (KIER)) Ara Cho (Korea Institute of Energy Research (KIER)) Jun-Sik Cho (Korea Institute of Energy Research (KIER)) Seung Kyu Ahn (Korea Institute of Energy Research (KIER)) Jinsu Yoo (Korea Institute of Energy Research (KIER)) SeJin Ahn (Korea Institute of Energy Research (KIER)) Jihye Gwak (Korea Institute of Energy Research (KIER)) Hyun-wook Park (Korea Institute of Energy Technology) Jae Ho Yun (Korea Institute of Energy Technology) Kihwan Kim (Korea Institute of Energy Research (KIER)) Donghyeop Shin (Korea Institute of Energy Research (KIER))
저널정보
한국태양광발전학회 Current Photovoltaic Research Current Photovoltaic Research Vol.11 No.1
발행연도
2023.3
수록면
8 - 12 (5page)

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In this work, we investigated the thickness of Ag precursor layer to improve the performance of flexible CIGSe solar cells grown on stainless steel (STS) substrates through three-stage co-evaporation with Ga grading followed by alkali treatments. The small amount of incorporated Ag in CIGSe films showed enhancement in the grain size and device efficiency. With an optimal 6 nm-thick Ag layer, the best cell on the STS substrate yielded more than 16%, which is comparable to the soda-lime glass (SLG) substrate. Thus, the addition of controlled Ag combined with alkali post-deposition treatment (PDT) led to increased open-circuit voltage (VOC), accompanied by the increased built-in potential as confirmed by capacitance-voltage (C-V) measurements. It is related to a reduction of charge recombination at the depletion region. The results suggest that Ag alloying and alkali PDT are essential for producing highly efficient flexible CIGSe solar cells.

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ABSTRACT
1. Introduction
2. Experimental method
3. Result and discussion
4. Conclusions
References

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