Molecular engineering of push-pull chromophore for efficient bulk-heterojunction morphology in solution processed small molecule organic photovoltaics
- Authors
- Ko, Haye Min; Choi, Hyunbong; Paek, Sanghyun; Kim, Kyungjun; Song, Kihyung; Lee, Jae Kwan; Ko, Jaejung
- Issue Date
- 2011
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- JOURNAL OF MATERIALS CHEMISTRY, v.21, no.20, pp.7248 - 7253
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF MATERIALS CHEMISTRY
- Volume
- 21
- Number
- 20
- Start Page
- 7248
- End Page
- 7253
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/114887
- DOI
- 10.1039/c1jm10667h
- ISSN
- 0959-9428
- Abstract
- The synthesis and characterization of new push-pull chromophores, bisDMFA-diTh-CA, bisDMFA-diTh-MMN, and bisDMFA-diTh-MIMN from 5'-(4-(bis(9,9-dimethyl-9H-fluoren-2-yl) aniline (bisDMFA) electron donating, dithiophene bridging, and various electron withdrawing moieties, cyanoacrylic acid (CA), methylene malononitrile (MMN), and methylene indenylidene malononitrile (MIMN), were demonstrated for efficient solution processed BHJ solar cells. The photophysical properties, the hole mobilities from the space charge limitation of current (SCLC) J-V characteristics, and surface morphologies of these materials/PCBM bulk-heterojunction films were also investigated. The best power conversion efficiency of 3.66% (+/- 0.12) with J(sc) = 11.82 m Lambda/cm(2), FF = 0.35, and V-oc = 0.90 V was observed in the BHJ film fabricated with the bisDMFA-diTh-MMN/C-71-PCBM composite with 3% 1-chloronaphthalene (CN), which is an efficiency similar to 82% and similar to 49% higher than before and after post-annealing without treatment of CN, respectively.
- 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
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholar.korea.ac.kr/handle/2021.sw.korea/114887)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.