| 학회 |
한국고분자학회 |
| 학술대회 |
2022년 봄 (04/06 ~ 04/08, 대전컨벤션센터) |
| 권호 |
47권 1호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
Interface Modification by Quinoxaline-based Materials an Effective Strategy for Suppression Recombination of Perovskite Solar Cells in Indoor Environments |
| 초록 |
In low light conditions, perovskite solar cells (PSCs) become sensitive to even low densities of defects due to a very low light intensity. To achieve high power conversion efficiency, reducing defects inside PSCs is important. Here, we introduced quinoxaline-phosphine oxide-based organic molecules (QxTTPO2) as buffer layer between electron transport layer and electrode to reduce interfacial defects. Atomic force microscope and kelvin probe force microscopy results indicated QxTTPO2 showed homogeneous chemical and electrical properties of the surface, suppressing charge recombination. PCSs with QxTTPO2 showed indoor power conversion efficiency of 27.19% with high FF of 0.81 under LED 1000 lux. Using QxTPPO2, we fabricated an indoor perovskite module with 7 devices integrated, demonstrating maximum power of 2,418 μW at Halogen 1000 lux. These results show that suppression of non-radiative recombination is an effective strategy to enhance PSCs performance in low light conditions. |
| 저자 |
최민준1, 김준태2, 이민우3, 윤상은1, 신소정1, 전경국4, 윤재성3, 장동욱2, 김종현1
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| 소속 |
1아주대, 2부경대, 3뉴사우스웨일스대, 4한국전자기술(연) |
| 키워드 |
indoor light; buffer layer materials; perovskite solar cells; organic small molecule; recombination
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| E-Mail |
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