| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터) |
| 권호 |
43권 2호 |
| 발표분야 |
분자전자 부문위원회 II |
| 제목 |
Enhancing Efficiency of Perovskite Solar Cells with Side-Chain Liquid Crystalline Polymer-doped Perovskite Absorbers |
| 초록 |
In this study, we have incorporated a side-chain liquid crystalline polymer (SCLCP) as a dopant into the perovskite film to achieve perovskite solar cells (PSCs) with high efficiency and long-term stability. SCLCP doping increased the grain size in the crystalline perovskite film by controlled solvent evaporation and reduced grain boundaries, which slowed the material degradation and reduced the charge recombination. Using this approach, the PSC power conversion efficiency (PCE) was significantly boosted from 18.0% (non-doped) to 20.63% for the SCLCP-doped perovskite film with much improved air stability. Furthermore, the trap state density in the SCLCP-doped films was decreased because the SCLCP effectively passivated the perovskite grain surface. Notably, the SCLCP appeared to act as a bridge between grains for effective charge transfer from perovskite towards the electrode, which would partially explain the enhanced efficiency and stability. |
| 저자 |
비라 무루간 아리부니티1, 권하은1, 제갈영순2, 진성호1
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| 소속 |
1부산대, 2경일대 |
| 키워드 |
Perovskite solar cell; Polymer-doped
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| E-Mail |
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