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Thieno[3,4-c] pyrrole-4,6-dione-Based Small Molecules for Highly Efficient Solution-Processed Organic Solar Cells
- Authors
- Ha, Jong-jin; Kim, Yu Jin; Park, Jong-gwang; An, Tae Kyu; Kwon, Soon-Ki; Park, Chan Eon; Kim, Yun-Hi
- Issue Date
- Apr-2014
- Publisher
- Wiley - V C H Verlag GmbbH & Co.
- Keywords
- bulk heterojunction; charge transfer; energy conversion; solar cells; small molecules
- Citation
- Chemistry - An Asian Journal, v.9, no.4, pp 1045 - 1053
- Pages
- 9
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- Chemistry - An Asian Journal
- Volume
- 9
- Number
- 4
- Start Page
- 1045
- End Page
- 1053
- ISSN
- 1861-4728
1861-471X
- Abstract
- Two small molecules named BT-TPD and TBDT-TTPD with a thieno[3,4-c]pyrrole-4,6-dione (TPD) unit were designed and synthesized for solution-processed bulk-heterojunction solar cells. Their thermal, electrochemical, optical, charge-transport, and photovoltaic characteristics were investigated. These compounds exhibit strong absorption at 460-560nm and low highest occupied molecular orbital levels (-5.36eV). Field-effect hole mobilities of these compounds are 1.7-7.7x10(-3)cm(2)V(-1)s(-1). Small-molecule organic solar cells based on blends of these donor molecules and a acceptor display power conversion efficiencies as high as 4.62% under the illumination of AM 1.5G, 100mWcm(-2).
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