| 학회 |
한국고분자학회 |
| 학술대회 |
2016년 봄 (04/06 ~ 04/08, 대전컨벤션센터) |
| 권호 |
41권 1호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
High Efficiency Colloidal Quantum Dot Photovoltaic Devices through Improved Charge Extraction |
| 초록 |
Colloidal Quantum Dot (CQD) have emerged as a promising photoactive material due to low production cost and solution processability. Recent advances in understanding the properties of CQDs and the operation issues improved the performance of CQD based photovoltaic devices (CQDPVs). In this work, room temperature solution-processed high-efficiency CQDPVs are developed by improving charge extraction properties at p-n heterojunctions. A unique conjugated polyelectrolyte, WPF-6-oxy-F, is used as an interface modification layer for ZnO/PbS-CQD heterojunctions. All of the device parameters are improved as a result of the enhanced built-in potential and the reduced interfacial charge recombination at the heterojunction. Finally, CQD photovoltaic devices with a power conversion efficiency of 9% are achievable, even by a solution process at room temperature in an air atmosphere. |
| 저자 |
장성연1, Randi Azmi2, Havid Aqoma2
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| 소속 |
1국민대, 2Kookmin Univ. |
| 키워드 |
colloidal quantum dot photovoltaic; charge extraction; heterojunction
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| E-Mail |
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