New benzodithiophene fused electron acceptors for benzodithiophene-based polymer
- Authors
- Sun, Cheng; Lee, Sanseong; Kim, Myeong-Jong; Kim, Jaeyoung; Oh, Juhui; Park, Byoungwook; Cheon, Hyung Jin; Ryu, Jong Min; Kang, Hongkyu; Jang, Soo-Young; Kim, Kihyun; Lee, Kwanghee; Kim, Yun-Hi
- Issue Date
- Dec-2021
- Publisher
- Elsevier BV
- Keywords
- Benzodithiophene fused acceptor; Nonfullerene acceptor; Film morphology; Surface energy; Organic solar cell
- Citation
- Dyes and Pigments, v.196
- Indexed
- SCIE
SCOPUS
- Journal Title
- Dyes and Pigments
- Volume
- 196
- URI
- https://scholarworks.gnu.ac.kr/handle/sw.gnu/2885
- DOI
- 10.1016/j.dyepig.2021.109756
- ISSN
- 0143-7208
1873-3743
- Abstract
- We designed and synthesised two fused electron acceptors based on 6,6,12,12-tetrakis (3-hexylphenyl)-indacenobis (benzodithiophene) with two-dimensional alkylthiophene or alkylthiothiophene substituents, named ETBDTIC and ESTBDTIC, respectively. ESTBDTIC exhibited red-shift absorption and deeper the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) levels compared with ETBDTIC. The ESTBDTIC based device exhibited slightly lower open-circuit voltage (V-oc) because of its deeper LUMO level that originated from the electron-withdrawing thioalkyl group, while short-circuit current density (J(sc)) and fill factor (FF) of ESTBDTIC were much higher than the J(sc) and FF of ETBDTIC. The ETBDTIC-based device displayed power conversion efficiency (PCE) of 5.11% with a Voc of 0.96 V, J(sc) of 11.24 mA/cm(2), and FF of 47.30%; the corresponding values of ESTBDTIC-based device were 7.78%, 0.92 V, 13.92 mA/cm(2), and 60.50%. The electronic properties, charge transport, crystallinity, film morphology, and surface energy, and photovoltaic characteristics were studied.
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Collections - 자연과학대학 > 화학과 > Journal Articles
- 공학계열 > Dept.of Materials Engineering and Convergence Technology > Journal Articles
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