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논문 기본 정보

자료유형
학술저널
저자정보
Shafket Rasool (Korea Research Institute of Chemical Technology (KRICT) Haoran Zhou (Korea University) Doan Van Vu (Korea Research Institute of Chemical Technology (KRICT) Muhammad Haris (Korea Research Institute of Chemical Technology (KRICT) Chang Eun Song (Korea Research Institute of Chemical Technology (KRICT) Hwan Kyu Kim (Korea University) Won Suk Shin (Korea Research Institute of Chemical Technology (KRICT)
저널정보
한국태양광발전학회 Current Photovoltaic Research Current Photovoltaic Research Vol.9 No.4
발행연도
2021.12
수록면
145 - 159 (15page)

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Light soaking (LS) stability in polymer solar cells (PSCs) has always been a challenge to achieve due to unstable photoactive layer-electrode interface. Especially, the electron transport layer (ETL) and photoactive layer interface limits the LS stability of PSCs. Herein, we have modified the most commonly used and robust zinc oxide (ZnO) ETL-interface using an organic dye molecule and a co-adsorbent. Power conversion efficiencies have been slightly improved but when these PSCs were subjected to long term LS stability chamber, equipped with heat and humidity (45°C and 85% relative humidity), an outstanding stability in the case of ZnO/dye+co-adsorbent ETL containing devices have been achieved. The enhanced LS stability occurred due to the suppressed interfacial defects and robust contact between the ZnO and photoactive layer. Current density as well as fill factors have been retained after LS with the modified ETL as compared to un-modified ETL, owing to their higher charge collection efficiencies which originated from higher electron mobilities. Moreover, the existence of less traps (as observed from light intensity-open circuit voltage measurements and dark currents at -2V) are also found to be one of the reasons for enhanced LS stability in the current study. We conclude that the mitigation ETL-surface traps using an organic dye with a co-adsorbent is an effective and robust approach to enhance the LS stability in PSCs.

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ABSTRACT
1. Introduction
2. Results and discussion
3. Conclusions
References

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