A double-acceptor as a superior organic dye design for p-type DSSCs: high photocurrents and the observed light soaking effect

Autor:	Kevin A. Click, Zhongjie Huang, Damian Beauchamp, Yiying Wu, Christopher M. Hadad, Benjamin R. Garrett
Rok vydání:	2014
Předmět:	Dye-sensitized solar cell chemistry.chemical_compound chemistry Extinction (optical mineralogy) Organic dye General Physics and Astronomy Structural principle Moiety Physical and Theoretical Chemistry Molar absorptivity Triphenylamine Photochemistry Acceptor
Zdroj:	Phys. Chem. Chem. Phys.. 16:26103-26111
ISSN:	1463-9084 1463-9076
DOI:	10.1039/c4cp04010d
Popis:	Herein, we report three novel single donor double acceptor dyes, BH2, 4, and 6, for use in p-type dye sensitized solar cells (DSSCs). BH4 yields one of the highest photocurrents, 7.4 mA cm(-2), to date. The high performance is achieved via a shorter synthetic route and no exotic materials or cell-building techniques. We suggest a structural principle when building dyes whereby one adopts a double acceptor/single anchor when a triphenylamine moiety is incorporated into a dye for p-type DSSCs. This strategy increases the molar extinction coefficient while simultaneously reducing the number of synthetic steps. The molar extinction coefficients (99 980 M(-1) cm(-1)) reported herein are among the highest reported. Finally, we report the first-ever-observed light soaking effect in p-type DSSCs.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::10fc4c3f91dfff7cef56e596b2c1937e https://doi.org/10.1039/c4cp04010d Zobrazit plný text záznamu