TY - JOUR
T1 - New pyran dyes for dye-sensitized solar cells
AU - Awuah, Samuel G.
AU - Polreis, Jason
AU - Prakash, Joshi
AU - Qiao, Qiquan
AU - You, Youngjae
N1 - Funding Information:
This project is based upon work supported by the National Science Foundation (NSF) /EPSCoR Grant #EPS-0554609, NSF ECCS-0950731, and NASA EPSCoR grant #NNX09AP67A. Use of the Center for Nanoscale Materials was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. We are grateful to Dr. Brian Logue for his assistance in the electrochemical aspects, Drs. Brian Moore and Seth Darling for their helpful computational input and to Dr. Mahdi Farrokh Baroughi for his assistance in the I – V and IPCE measurement. A technical assist from Mr. Sudeep Karanjit is also appreciated.
PY - 2011/11/15
Y1 - 2011/11/15
N2 - Although ruthenium-based dyes have been extensively used in dye-sensitized solar cells (DSSCs) as photosensitizers, they have several shortcomings such as high costs and potential environmental toxicities. This has stimulated the development of highly efficient organic dyes as photosensitizers. We report the synthesis and photophysical, electrochemical and theoretical properties of novel pyran-based organic dyes (D1, D2, and D3) as well as their applications in DSSCs for the first time. The designed dyes possess a cyanoacrylic acid group as an acceptor and arylamine group as a donor group in a D-π-A configuration. The introduction of varying donor groups resulted in correspondingly different photophysical and electrochemical properties. The DSSCs fabricated using dye D1 showed the highest photovoltaic performance: a maximum incident photon-to-current conversion efficiency (IPCE) of 42%, a short-circuit current density (Jsc) of 4.76 mA cm-2, an open circuit voltage (Voc) of 0.68 V, and a fill factor (FF) of 0.67, corresponding to an overall conversion efficiency of 2.17% under 100 mW cm-2 irradiation. The synthesized dyes with a pyran chromophore and arylamine donor groups showed potentials for applications in DSSCs.
AB - Although ruthenium-based dyes have been extensively used in dye-sensitized solar cells (DSSCs) as photosensitizers, they have several shortcomings such as high costs and potential environmental toxicities. This has stimulated the development of highly efficient organic dyes as photosensitizers. We report the synthesis and photophysical, electrochemical and theoretical properties of novel pyran-based organic dyes (D1, D2, and D3) as well as their applications in DSSCs for the first time. The designed dyes possess a cyanoacrylic acid group as an acceptor and arylamine group as a donor group in a D-π-A configuration. The introduction of varying donor groups resulted in correspondingly different photophysical and electrochemical properties. The DSSCs fabricated using dye D1 showed the highest photovoltaic performance: a maximum incident photon-to-current conversion efficiency (IPCE) of 42%, a short-circuit current density (Jsc) of 4.76 mA cm-2, an open circuit voltage (Voc) of 0.68 V, and a fill factor (FF) of 0.67, corresponding to an overall conversion efficiency of 2.17% under 100 mW cm-2 irradiation. The synthesized dyes with a pyran chromophore and arylamine donor groups showed potentials for applications in DSSCs.
KW - Dye-sensitized solar cells (DSSCs)
KW - Photosensitizer
KW - Pyran
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U2 - 10.1016/j.jphotochem.2011.09.014
DO - 10.1016/j.jphotochem.2011.09.014
M3 - Article
AN - SCOPUS:80054981875
SN - 1010-6030
VL - 224
SP - 116
EP - 122
JO - Journal of Photochemistry and Photobiology A: Chemistry
JF - Journal of Photochemistry and Photobiology A: Chemistry
IS - 1
ER -