Organic dyes incorporating low-band-gap chromophores based on pi-extended benzothiadiazole for dye-sensitized solar cells
- Authors
- Lee, Dong Hyun; Lee, Myung Jun; Song, Hae Min; Song, Bok Joo; Seo, Kang Deuk; Pastore, Mariachiara; Anselmi, Chiara; Fantacci, Simona; De Angelis, Filippo; Nazeeruddin, Mohammad K.; Graeetzel, Michael; Kim, Hwan Kyu
- Issue Date
- 11월-2011
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Metal-free organic dyes; Low band-gap chromophore; Benzothiadiazole unit; Triphenylamine (TPA) unit; pi-Bridge units; Dye-sensitized solar cells
- Citation
- DYES AND PIGMENTS, v.91, no.2, pp.192 - 198
- Indexed
- SCIE
SCOPUS
- Journal Title
- DYES AND PIGMENTS
- Volume
- 91
- Number
- 2
- Start Page
- 192
- End Page
- 198
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/111315
- DOI
- 10.1016/j.dyepig.2011.03.015
- ISSN
- 0143-7208
- Abstract
- A series of new it-conjugated organic dyes (HKK-BTZ1, HKK-BTZ2, HKK-BTZ3 and HKK-BTZ4), comprising triphenylamine (TPA) moieties as the electron donor and benzothiadiazole moieties as the electron acceptor/anchoring groups, was synthesized for the use in dye-sensitized solar cells (DSSCs). TPA units are bridged to benzothiadiazole with single(S), double(D) and triple bonds(T) in different derivatives. And HKK-BTZ1 was modified by introducing alkoxy group of TPA unit, because the bulky alkoxy group is a strong donating group for the more red shift and for reducing aggregation of dyes in TiO(2) film. The structure-property relationship was investigated. Under standard global AM 1.5 G illumination, a maximum photo-to-electron conversion efficiency of 7.30% was achieved with the DSSC based on dye HKK-BTZ4 (J(SC) = 17.9 mA/cm(-2). V(OC) = 0.62 V, FF = 0.66), while the Ru dye N719-sensitized DSSC showed an efficiency of 7.82% with a J(SC) of 17.5 mA/cm(-2), a V(OC) of 0.62 V, and a FF of 0.72. (C) 2011 Elsevier Ltd. All rights reserved.
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Collections - Graduate School > Department of Material Chemistry > 1. Journal Articles
- Graduate School > Department of Advanced Materials Chemistry > 1. Journal Articles
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