Synthesis and characterization of push-pull organic semiconductors with various acceptors for solution-processed small molecule organic solar cells
- Authors
- Cho, Nara; Kim, Jooyoung; Song, Kihyung; Lee, Jae Kwan; Ko, Jaejung
- Issue Date
- 27-5월-2012
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Bulk heterojunction; Intramolecular charge transfer; Electron-withdrawing acceptor; Organic solar cell; Organic semiconductor
- Citation
- TETRAHEDRON, v.68, no.21, pp.4029 - 4036
- Indexed
- SCIE
SCOPUS
- Journal Title
- TETRAHEDRON
- Volume
- 68
- Number
- 21
- Start Page
- 4029
- End Page
- 4036
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/108393
- DOI
- 10.1016/j.tet.2012.03.061
- ISSN
- 0040-4020
- Abstract
- New efficient push-pull organic semiconductors comprising of the bis(9,9-dimethyl-9H-fluoren-2-yl) aniline (bisDMFA) donor and the various acceptors such as NO2, DCBP, and TCF, which were linked with bithiophene or vinyl bithiophene pi-conjugation bridges, were synthesized, and their photovoltaic characteristics were investigated in solution-processed small molecule organic solar cells (SMOSCs). The intramolecular charge transfers of these materials were effectively appeared in between bisDMFA donor and acceptors, depending on the electron-withdrawing strength of acceptors. The organic semiconductors having NO2 and DCBP acceptors exhibited the most efficient photovoltaic performance, showing power conversion efficiency (PCE) of 1.98% (+/- 0.17) and 2.01% (+/- 0.21), respectively. When the TiOx thin layer was treated on photoactive layer, the organic semiconductor having NO2 showed the best PCE of 2.70% with short circuit current of 8.19 mA/cm(2), fill factor of 0.40, and open circuit voltage of 0.83 V in SMOSC devices. (C) 2012 Elsevier Ltd. All rights reserved.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Science and Technology > Department of Advanced Materials Chemistry > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.