상세정보
학술지
A Near-Infrared Dye for Dye-Sensitized Solar Cell: Catecholate-Functionalized Zinc Phthalocyanine
- 저자
- Ashis K. Sarker, 강만구, Jong-Dal Hong
- 발행일
- 201203
- 출처
- Dyes and Pigments, v.92 no.3, pp.1160-1165
- ISSN
- 0143-7208
- 출판사
- Elsevier
- 초록
- The design and synthesis of an asymmetrical zinc phthalocyanine sensitizer modified with a catechol anchoring group is reported. The performance of this sensitizer was evaluated in a dye-sensitized solar cell. A strong interaction between the catechol dye and TiO2 (with the formation of a five-membered charge-transfer complex) was evidenced by a strong shift in the Q-band of the ZnPc-Cat from 680 nm in solution to 750 nm on TiO2, along with an appreciable absorption tail extending to ~1000 nm. The fabricated solar cell containing the phthalocyanine sensitizer showed relatively high light-to-electron conversion efficiency (η = 0.92%), considering that few catechol dyes exceed η = 0.7% in dye-sensitized solar cells. Values of Isc = 2.53 mA cm-2 and Voc = 540 mV were obtained, referring to a standard N719 cell (η = 6.46%). A comparison of zinc phthalocyanine sensitizers bearing different anchoring groups affirmed the superiority of carboxylate groups relative to those bearing catechol groups in terms of cell performance. © 2011 Elsevier Ltd. All rights reserved.
- KSP 제안 키워드
- Absorption tail, Anchoring group, Charge transfer complex(CTC), Conversion efficiency(C.E.), Dye-sensitized solar cells(DSCs), Near-Infrared(NIR), Q-band, Zinc phthalocyanine, cell performance, high light, near-infrared dye