Journal
ORGANIC ELECTRONICS
Volume 15, Issue 9, Pages 2079-2090Publisher
ELSEVIER
DOI: 10.1016/j.orgel.2014.05.024
Keywords
Bodipy; Acceptor; Linker; Photovoltaic property; Electrochemical impedance spectroscopy
Funding
- Science Foundation of Anhui Province [1208085MB19]
- project of technology innovation China Academy of Sciences instrument function development [yg2012067]
Ask authors/readers for more resources
A series of novel 2,6-conjugated Bodipy metal-free organic dyes (UY5-8) with phenothiazine (PTZ) moiety as electron donor for the dye-sensitized solar cells (DSSCs) have been designed and synthesized. The optical, electrochemical properties and photovoltaic performances are extensively investigated. The structure-property relationship shows that the introduction of various auxiliary conjugated spacers and anchoring groups are favorable to changing the efficiency of DSSCs. Among these dyes, UY7 comprised of furan with lower resonance energy as linker and cyanoacetic acid unit as electron acceptor possesses a flatter structure and longer electron recombination lifetime. Hence, a DSSCs using UY7 showing best photovoltaic performance with a short-circuit photocurrent density (J(sc)) of 13.64 mA cm(-2), an open-circuit photovoltage (V-oc) of 590 mV and a fill factor (ff) of 0.66, corresponding to an overall conversion efficiency (g) of 5.31% under 100 mW cm(-2) simulated AM 1.5 G solar irradiation. This is the best reported result in the solar cell with a Bodipy dye as photosensitizer. (C) 2014 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available