| 학회 |
한국고분자학회 |
| 학술대회 |
2013년 봄 (04/11 ~ 04/12, 대전컨벤션센터) |
| 권호 |
38권 1호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
High efficiency and high photo-stability zinc-phthalocyanine based planar heterojunction solar cells with a double interfacial layer |
| 초록 |
We report that the use of MoO3 and CuI as a double interfacial layer improves the power conversion efficiency and the photo-stability in ZnPc based solar cells. The device without the interfacial layer results in low efficiency and low photo-stability. The absorption of the ZnPc film is enhanced 1.6 times by insertion of CuI as a template layer. Resultingly, the OPV with a CuI interfacial layer increases the efficiency significantly to 3.3%. However, the photo-stability is lowered even further. The TOF-SIMS analysis reveals that the decomposition of CuI and the diffusion of Cu is the origin of the photo-degradation of the device. Insertion of the MoO3 layer between the ITO and CuI prevents the decomposition of CuI to Cu and the diffusion of Cu under UV illumination. Our results indicate that the selection of materials for anode engineering and the combination of interfacial layers are important to improve the efficiency and stability of the planar heterojunction solar cells. |
| 저자 |
김태민, 김지환, 심현섭, 김장주
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| 소속 |
서울대 |
| 키워드 |
organic solar cell; molecular orientation; TOF-SIMS
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| E-Mail |
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