| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 봄 (04/07 ~ 04/09, 대전컨벤션센터) |
| 권호 |
46권 1호 |
| 발표분야 |
콜로이드 및 분자조립 부문위원회 Ⅰ |
| 제목 |
The Role of Ethylene Diamine Catalyst in NiOx Sol-Gel for Accelerating Hole Extraction in Perovskite Photovoltaic Cells |
| 초록 |
In nickel oxide (NiOx) sol-gel synthesis, the use of an ethylene diamine (EDA, amine Lewis base) determines the coordination properties of metal ions (Lewis acid). The morphological and electrical characteristics were verified in NiOx with each EDA molar ratio. Specifically, this method induced the changes (NiOx particle sizes and affinity/crystallinity of MAPbI3 perovskite). Moreover, the deepest energy levels were demonstrated in the optimized condition via UPS analysis. This is due to enhanced coordination bond (Ni-O) in the critical condition. Further, the synthesized NiOx was applied as HTL in perovskite photovoltaics. Based on charge dynamics, higher cell parameters were observed in the optimized devices. This is attributed to the energy level balance between the active layer (MAPbI3) and NiOx (0.175 mol EDA), which are advantageous in hole transfer. Finally, this method represents specific roles and effects of EDA catalysts and insights for complex chemistry engineering. |
| 저자 |
김병기1, 장웅식1, 박유정2, 강주환2, 서정화2, 왕동환1
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| 소속 |
1중앙대, 2동아대 |
| 키워드 |
Nickel oxide sol-gel; cthylenediamine (EDA); crystal field thory; non-stoichiometric; perovskite phoyovoltaics
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| E-Mail |
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