| 학회 |
한국고분자학회 |
| 학술대회 |
2020년 가을 (10/05 ~ 10/08, 부산컨벤션센터(BEXCO)) |
| 권호 |
45권 1호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Air-processable and Stable Perovskite Planar Solar Cells with Base-Layered 2 Dimensional Perovskite |
| 초록 |
Despite having record efficiencies, moisture instability still presents a challenge for the commercialization of inverted planar perovskite solar cells. We overcome this by introducing extra ethylenediamine cations at the base of the 3D perovskite layer. A 2D/3D hybrid active layer is formed when the cations induce thin (2D) perovskite growth beneath the 3D perovskite layer. This 2D layer in turn acts as a template for the growth of relatively large grains compared to that of pure 3D perovskite films. This stems from the merging of grain boundaries. The hydrophobicity of the 2D/3D perovskite film consequently improves. Because of fewer defects sourced from grain boundaries, the 2D/3D devices yield a higher efficiency of 15.02%, compared to 13.10% from 3D devices. When stored in humid environment of 55% RH, the 2D/3D devices exhibit longer stabilities, with 75% of their efficiencies maintained after 150 hours, compared to a total loss in efficiency for 3D devices in the same time frame. |
| 저자 |
Pesi Mwitumwa Hangoma1, 김단비2, 정윤경1, 이보람3, 김주현4, 박성흠5
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| 소속 |
1Pukyong National Univ., 2Department of Physics, 3Busan, 448513, 5South Korea |
| 키워드 |
perovskite; solar cell
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| E-Mail |
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