TY - JOUR
T1 - Organic Photosensitizers Incorporating Rigid Benzo[1,2-b:6,5-b′]dithiophene Segment for High-Performance Dye-Sensitized Solar Cells
AU - Li, Chun Ting
AU - Wu, Feng Ling
AU - Lee, Bing Hsuan
AU - Yeh, Ming-Chang P.
AU - Lin, Jiann T.
N1 - Funding Information:
We acknowledge the Support (Technology Development for Deep Decarbonization: grant no. 106-0210-02-11-03) of the Academia Sinica (AS), the Ministry of Science and Technology of Taiwan, and Instrumental Center of Institute of Chemistry, AS. We are also grateful to the program “Technology Development for Deep Decarbonization” (grant no. 106-0210-02-11-03).
Publisher Copyright:
© 2017 American Chemical Society.
PY - 2017/12/20
Y1 - 2017/12/20
N2 - Benzo[1,2-b:6,5-b′]dithiophene (BDT) entity with rigid skeleton is introduced into the conjugated spacer of organic dyes, with triphenylamine as the electron donor and 2-cyanoacrylic acid as the acceptor, have been prepared for dye-sensitized solar cells. Inserting an aromatic entity between BDT and the anchor extends the absorption wavelength of the dyes and improves the dark current suppression efficiency, and consequently leads to better cell performance. Addition of chenodeoxycholic acid coadsorbent alleviates dye aggregation and results in better cell efficiency. The dye inserted with 4H-cyclopenta[2,1-b:3,4-b′]dithiophene entity achieves the best efficiency (9.11%) when I-/I3- was used as the electrolyte. When Co(phen)32+/3+ was used as the electrolyte, the efficiency further boosts to 9.88%.
AB - Benzo[1,2-b:6,5-b′]dithiophene (BDT) entity with rigid skeleton is introduced into the conjugated spacer of organic dyes, with triphenylamine as the electron donor and 2-cyanoacrylic acid as the acceptor, have been prepared for dye-sensitized solar cells. Inserting an aromatic entity between BDT and the anchor extends the absorption wavelength of the dyes and improves the dark current suppression efficiency, and consequently leads to better cell performance. Addition of chenodeoxycholic acid coadsorbent alleviates dye aggregation and results in better cell efficiency. The dye inserted with 4H-cyclopenta[2,1-b:3,4-b′]dithiophene entity achieves the best efficiency (9.11%) when I-/I3- was used as the electrolyte. When Co(phen)32+/3+ was used as the electrolyte, the efficiency further boosts to 9.88%.
KW - benzo[1,2-b:6,5-b′]dithiophene
KW - coadsorbent
KW - cobalt electrolyte
KW - dye-sensitized solar cell
KW - metal-free sensitizers
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U2 - 10.1021/acsami.7b15181
DO - 10.1021/acsami.7b15181
M3 - Article
C2 - 29182274
AN - SCOPUS:85038612084
VL - 9
SP - 43739
EP - 43746
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
SN - 1944-8244
IS - 50
ER -