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초록
Three organic sensitizers JK-87, JK-88, and JK-89 containing a bulky spirobifluorene unit in the bridged group are designed and synthesized. Under standard global A.M. 1.5 solar condition, the JK-89 sensitized cell gave a short-circuit photocurrent density (J(sc)) of 13.02 mA cm(-2), an open-circuit voltage (V-oc) of 0.75 V, and a fill factor of 0.70, corresponding to an overall conversion efficiency 77 of 6.83%. The eta of JK-89 is higher than those of other two cells due to the larger J(sc). The improved J(sc) value is mainly attributed to the broad and red-shifted absorption band. (C) 2009 Elsevier Ltd. All rights reserved.
키워드
BIS-DIMETHYLFLUORENYL AMINO; NANOCRYSTALLINE TIO2; SPECTRAL SENSITIZATION; CONVERSION-EFFICIENCY; ELECTRON-INJECTION; COUMARIN-DYE; PHOTOCURRENT; AGGREGATION; DYNAMICS; FILMS
- 제목
- Novel organic sensitizers containing a bulky spirobifluorene unit for solar cell
- 저자
- Cho, Nara; Choi, Hyunbong; Kim, Duckhyun; Song, Kihyung; Kang, Moon-sung; Kang, Sang Ook; Ko, Jaejung
- 발행일
- 2009-08-01
- 유형
- Article
- 저널명
- Tetrahedron
- 권
- 65
- 호
- 31
- 페이지
- 6236 ~ 6243