| 학회 |
한국고분자학회 |
| 학술대회 |
2009년 봄 (04/09 ~ 04/10, 대전컨벤션센터) |
| 권호 |
34권 1호 |
| 발표분야 |
신재생에너지 기술현황(분자전자 부문위원회) |
| 제목 |
Enhancements of the Photocurrent and Open Circuit Voltage in Organic Photovoltaic Cells with a Phthalocyanine Interlayer |
| 초록 |
Organic photovoltaic (OPV) cells can be an essential component of future global energy production because of low cost, light weight, and mechanical flexibility. We improved short-circuit current density (Jsc) and open-circuit voltage (Voc) of the OPV cells by inserting a phthalocyanine thin layer between pentacene and C70 layers. The HOMO and LUMO levels of the three materials form a cascade energy band structure and the band offsets at all interfaces in the photoactive layer is larger. These can lead to efficient exciton dissociation and charge transfer at the interface between any two organic layers. In this energy band structure, additionally-generated excitons in the interlayer could contribute to photocurrent. Furthermore, higher ionization potential of the phthalocyanine materials compared to the donor increased the Voc. |
| 저자 |
심명선, 이지황, 김종수, 박종환, 김주현, 심치영, 조길원
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| 소속 |
포항공과대 |
| 키워드 |
organic photovoltaic; phthalocyanine; interlayer
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| E-Mail |
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