Abstract
A series of organic dyes containing oligo-phenothiazine were synthesized and used effectively on the fabrication of dye-sensitized solar cells (DSSCs). In these compounds the phenothiazine moiety functions both as an electron donor and as a π-bridge. These materials exhibit considerably high values of open-circuit voltage (V oc) ranging from 0.78-0.83 V under an AM1.5 solar condition (100 mW cm -2). Two kinds of substituents, i.e., hexyl and hexyloxyphenyl groups, were added onto the N(10) of phenothiazine for comparison. The best device displayed a short-circuit current (J sc) of 14.3 mA cm -2, an open-circuit voltage (V oc) of 0.83 V, a fill factor (FF) of 0.65, corresponding to an overall conversion efficiency of 7.78%. Their photophysical properties were analyzed with the aid of a time-dependent density functional theory (TDDFT) model with the B3LYP functional. The electronic nature of the devices was further elucidated by using electrochemical impedance spectroscopy.
| Original language | English |
|---|---|
| Pages (from-to) | 21704-21712 |
| Number of pages | 9 |
| Journal | Journal of Materials Chemistry |
| Volume | 22 |
| Issue number | 40 |
| DOIs | |
| Publication status | Published - Oct 28 2012 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Materials Chemistry
Cite this
Organic dyes containing oligo-phenothiazine for dye-sensitized solar cells. / Chang, Yuan Jay; Chou, Po Ting; Lin, Yan Zuo; Watanabe, Motonori; Yang, Chih Jen; Chin, Tsung Mei; Chow, Tahsin J.
In: Journal of Materials Chemistry, Vol. 22, No. 40, 28.10.2012, p. 21704-21712.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Organic dyes containing oligo-phenothiazine for dye-sensitized solar cells
AU - Chang, Yuan Jay
AU - Chou, Po Ting
AU - Lin, Yan Zuo
AU - Watanabe, Motonori
AU - Yang, Chih Jen
AU - Chin, Tsung Mei
AU - Chow, Tahsin J.
PY - 2012/10/28
Y1 - 2012/10/28
N2 - A series of organic dyes containing oligo-phenothiazine were synthesized and used effectively on the fabrication of dye-sensitized solar cells (DSSCs). In these compounds the phenothiazine moiety functions both as an electron donor and as a π-bridge. These materials exhibit considerably high values of open-circuit voltage (V oc) ranging from 0.78-0.83 V under an AM1.5 solar condition (100 mW cm -2). Two kinds of substituents, i.e., hexyl and hexyloxyphenyl groups, were added onto the N(10) of phenothiazine for comparison. The best device displayed a short-circuit current (J sc) of 14.3 mA cm -2, an open-circuit voltage (V oc) of 0.83 V, a fill factor (FF) of 0.65, corresponding to an overall conversion efficiency of 7.78%. Their photophysical properties were analyzed with the aid of a time-dependent density functional theory (TDDFT) model with the B3LYP functional. The electronic nature of the devices was further elucidated by using electrochemical impedance spectroscopy.
AB - A series of organic dyes containing oligo-phenothiazine were synthesized and used effectively on the fabrication of dye-sensitized solar cells (DSSCs). In these compounds the phenothiazine moiety functions both as an electron donor and as a π-bridge. These materials exhibit considerably high values of open-circuit voltage (V oc) ranging from 0.78-0.83 V under an AM1.5 solar condition (100 mW cm -2). Two kinds of substituents, i.e., hexyl and hexyloxyphenyl groups, were added onto the N(10) of phenothiazine for comparison. The best device displayed a short-circuit current (J sc) of 14.3 mA cm -2, an open-circuit voltage (V oc) of 0.83 V, a fill factor (FF) of 0.65, corresponding to an overall conversion efficiency of 7.78%. Their photophysical properties were analyzed with the aid of a time-dependent density functional theory (TDDFT) model with the B3LYP functional. The electronic nature of the devices was further elucidated by using electrochemical impedance spectroscopy.
UR - http://www.scopus.com/inward/record.url?scp=84867006326&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84867006326&partnerID=8YFLogxK
U2 - 10.1039/c2jm35556f
DO - 10.1039/c2jm35556f
M3 - Article
AN - SCOPUS:84867006326
VL - 22
SP - 21704
EP - 21712
JO - Journal of Materials Chemistry
JF - Journal of Materials Chemistry
SN - 0959-9428
IS - 40
ER -