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학술지 A Near-Infrared Dye for Dye-Sensitized Solar Cell: Catecholate-Functionalized Zinc Phthalocyanine
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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
DOI
https://dx.doi.org/10.1016/j.dyepig.2011.07.002
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.
키워드
Anchoring groups, Catechol-functionalized zinc phthalocyanine, Dye-sensitized solar cell, NIR dyes, Photovoltaic windows
KSP 제안 키워드
Absorption tail, Anchoring group, Charge transfer complex(CTC), Conversion efficiency(C.E.), Dye-sensitized solar cells(DSCs), NIR dyes, Near-Infrared(NIR), Photovoltaic windows, Q-band, Zinc phthalocyanine, cell performance