We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Benzothiadiazole Versus Thiophene: Influence of the Auxiliary Acceptor on the Photovoltaic Properties of Donor-Acceptor-Based Copolymers.
- Authors
Zongbo Li; Kangkang Weng; Aihua Chen; Xiaobo Sun; Donghui Wei; Mingming Yu; Lijun Huo; Yanming Sun
- Abstract
Two donor-acceptor (D-A) type conjugated copolymers, P1 and P2, are designed and synthesized. A classical benzothiadiazole acceptor is used to replace a thiophene unit in the polymer chain of P1 to obtain P2 terpolymer. Compared with P1, P2 exhibits broader absorption spectra, higher absorption coefficient, deeper lowest unoccupied molecular orbital level, and a relatively lower band gap. As a result, the P2-based solar cell exhibits a high power conversion efficiency (PCE) of 6.60%, with a short-circuit current (Jsc) of 12.43 mA cm-2, and a fill factor (FF) of 73.1%, which are higher than those of the P1-based device with a PCE of 4.70%, aJsc of 9.43 mA cm-2, and an FF of 61.6%.
- Subjects
THIADIAZOLES; THIOPHENES; PHOTOVOLTAIC power generation; COPOLYMERS; CHAIN scission; MOLECULAR orbitals
- Publication
Macromolecular Rapid Communications, 2018, Vol 39, Issue 2, p1
- ISSN
1022-1336
- Publication type
Article
- DOI
10.1002/marc.201700547