Abstract
A series of new organic dyes, comprising a naphthyl moiety as a π-conjugated bridge, different amines as donors, and a cyanoacrylic acid group as an electron acceptor and anchoring group, have been designed and synthesized for applications in dye-sensitized solar cells (DSSCs). One of the compounds was also characterized by single-crystal X-ray structural analysis. All of the dyes exhibited maximum absorptions in the range of 371-441 nm. The short-circuit photocurrent density, open-circuit voltage, and fill factor (FF) values of the devices are in the range of 6.13-10.90 mA cm -2 , 0.62-0.69 V, and 0.62-0.67, respectively, corresponding to an overall conversion efficiency of 2.76-4.55 %. The conversion efficiency reached 38-62 % of that of a N719-based device (7.31 %) fabricated and measured under similar conditions. Steric congestion between the naphthyl and aromatic moieties jeopardizes charge transfer from the donor to the acceptor. Insertion of an alkenyl entity between the naphthyl entity and the aromatic ring alleviates steric congestion and leads to longer wavelength electronic absorption spectra.
| Original language | English |
|---|---|
| Pages (from-to) | 1074-1084 |
| Number of pages | 11 |
| Journal | Chemistry - An Asian Journal |
| Volume | 7 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2012 May 1 |
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Keywords
- donor-acceptor systems
- dyes/pigments
- sensitizers
- solar cells
ASJC Scopus subject areas
- Biochemistry
- Organic Chemistry
Cite this
Naphthyl and thienyl units as bridges for metal-free dye-sensitized solar cells. / Chen, Yung Chung; Chen, Yo Hua; Chou, Hsien Hsin; Chaurasia, Sumit; Wen, Yuh S.; Lin, Jiann T.; Yao, Ching-Fa.
In: Chemistry - An Asian Journal, Vol. 7, No. 5, 01.05.2012, p. 1074-1084.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Naphthyl and thienyl units as bridges for metal-free dye-sensitized solar cells
AU - Chen, Yung Chung
AU - Chen, Yo Hua
AU - Chou, Hsien Hsin
AU - Chaurasia, Sumit
AU - Wen, Yuh S.
AU - Lin, Jiann T.
AU - Yao, Ching-Fa
PY - 2012/5/1
Y1 - 2012/5/1
N2 - A series of new organic dyes, comprising a naphthyl moiety as a π-conjugated bridge, different amines as donors, and a cyanoacrylic acid group as an electron acceptor and anchoring group, have been designed and synthesized for applications in dye-sensitized solar cells (DSSCs). One of the compounds was also characterized by single-crystal X-ray structural analysis. All of the dyes exhibited maximum absorptions in the range of 371-441 nm. The short-circuit photocurrent density, open-circuit voltage, and fill factor (FF) values of the devices are in the range of 6.13-10.90 mA cm -2 , 0.62-0.69 V, and 0.62-0.67, respectively, corresponding to an overall conversion efficiency of 2.76-4.55 %. The conversion efficiency reached 38-62 % of that of a N719-based device (7.31 %) fabricated and measured under similar conditions. Steric congestion between the naphthyl and aromatic moieties jeopardizes charge transfer from the donor to the acceptor. Insertion of an alkenyl entity between the naphthyl entity and the aromatic ring alleviates steric congestion and leads to longer wavelength electronic absorption spectra.
AB - A series of new organic dyes, comprising a naphthyl moiety as a π-conjugated bridge, different amines as donors, and a cyanoacrylic acid group as an electron acceptor and anchoring group, have been designed and synthesized for applications in dye-sensitized solar cells (DSSCs). One of the compounds was also characterized by single-crystal X-ray structural analysis. All of the dyes exhibited maximum absorptions in the range of 371-441 nm. The short-circuit photocurrent density, open-circuit voltage, and fill factor (FF) values of the devices are in the range of 6.13-10.90 mA cm -2 , 0.62-0.69 V, and 0.62-0.67, respectively, corresponding to an overall conversion efficiency of 2.76-4.55 %. The conversion efficiency reached 38-62 % of that of a N719-based device (7.31 %) fabricated and measured under similar conditions. Steric congestion between the naphthyl and aromatic moieties jeopardizes charge transfer from the donor to the acceptor. Insertion of an alkenyl entity between the naphthyl entity and the aromatic ring alleviates steric congestion and leads to longer wavelength electronic absorption spectra.
KW - donor-acceptor systems
KW - dyes/pigments
KW - sensitizers
KW - solar cells
UR - http://www.scopus.com/inward/record.url?scp=84860484495&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84860484495&partnerID=8YFLogxK
U2 - 10.1002/asia.201100972
DO - 10.1002/asia.201100972
M3 - Article
C2 - 22383302
AN - SCOPUS:84860484495
VL - 7
SP - 1074
EP - 1084
JO - Chemistry - An Asian Journal
JF - Chemistry - An Asian Journal
SN - 1861-4728
IS - 5
ER -