| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 가을 (10/20 ~ 10/22, 경주컨벤션센터) |
| 권호 |
46권 2호 |
| 발표분야 |
분자전자 부문위원회 Ⅰ,Ⅱ |
| 제목 |
Effective Strategy For High-power Perovskite Solar Cells In Indoor Environments Using Quinoxaline-based Buffer Layer Materials |
| 초록 |
Organic-inorganic hybrid perovskite solar cells (PSCs) emerge as a good candidate for the next-generation solar cells due to its excellent photoelectric characteristics. In indoor environments, PSCs become sensitive to even low densities of defects or trap sites due to a very low light intensity. To achieve high photoelectric conversion efficiency, reduce defects inside PSCs is important. In this study, we introduced quinoxaline-phosphine oxide-based organic molecules (Qx) as buffer layer between electron transport layer and electrode of PSCs. Electrochemical impedance spectroscopy (EIS) showed Qx enabled faster charge transport and suppressed charge recombination. Also, Ultraviolet photoemission spectroscopy (UPS) measurements indicate that Qx improved electron extraction by interfacial energy level alignment. Adjusting interface characteristics and work function of the electrode, PCSs with Qx showed power density of 83.40μW/cm2 and PCE of 27.19% under LED 1000 lux illumination. |
| 저자 |
최민준1, 김준태2, 이민우3, 윤상은1, 신소정1, 윤재성3, 장동욱2, 김종현1
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| 소속 |
1아주대, 2부경대, 3UNSW |
| 키워드 |
indoor light; buffer layer materials; perovskite solar cells; organic small molecule
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| E-Mail |
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