| 학회 |
한국고분자학회 |
| 학술대회 |
2014년 봄 (04/10 ~ 04/11, 대전 컨벤션센터) |
| 권호 |
39권 1호 |
| 발표분야 |
고분자합성 |
| 제목 |
A Novel Silicon-Naphthalocyanine-based Low Band-Gap Dye for Ternary Blend Bulk Heterojunction Solar Cells |
| 초록 |
There are many parallel methods to increase the efficiency of bulk heterojunction organic solar cells. One method is to increase the photocurrent by broadening the spectral absorption of the solar cell through the incorporation of additional absorbing materials with non-overlapping absorption spectra in a ternary blend cell. We have shown that the formation of a ternary blend bulk heterojunction cell made from regioregular P3HT, PCBM, and tert-butyl functionalized silicon naphthalocyanine results in increased NIR absorption. This absorption yields an increase of up to 40% in the Jsc and up to 19% in the PCE in photovoltaic devices. 2-D GIWAXS experiments show that compared to the unfunctionalized dye, the tert-butyl functionalization enables an increase in the volume fraction of dye molecule that can be incorporated before the device performance decreases. This simple approach may be generally applicable for use in other BHJ systems towards increasing PCEs beyond current record levels. |
| 저자 |
임보규1, Jason T. Bloking2, George Margulis2, Michael D. McGehee2, Alan Sellinger2
|
| 소속 |
1LG화학기술(연), 2Stanford Univ. |
| 키워드 |
Naphthalocyanine; Solar Cells; Dye
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| E-Mail |
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