S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Material Science and Engineering (재료공학부) Journal Papers (저널논문_재료공학부)
태양전지 적용을 위한 poly(oligothiophene-alt-benzothiadiazole)s의 합성과 특성 분석
Synthesis and Characterization of Low-bandgap Poly(oligothiophene-altbenzothiadiazole)s for Photovoltaic Application
- 이윤규; 정재웅; 조원호
- Issue Date
- 한국섬유공학회지 Vol.50 No.1, pp. 16-24
- Two kinds of low-bandgap alternating copolymers composed of thiophene and benzothiadiazole were synthesized via the Stille coupling reaction. The effect of number of alkyl groups attached to oligothiophenes in the repeating unit of the copolymers on their optical, electrochemical, and photovoltaic properties was systematically investigated. One of the new polymers, poly(3,3"-dihexyl-2,2':5',2"-terthiophene-alt-2,1,3-benzothiadiazole) (P1), has better intermolecular packing than the other poly(3,3',3"-trihexyl-2,2':5',2"-terthiophene-alt-2,1,3-benzothiadiazole) (P2), and thus P1 is more beneficial for achieving high charge carrier mobility. P1-based device shows the power conversion efficiency as high as 2.19% when blended with [6,6]-phenyl--butyric acid methyl ester after thermal treatment at for 30 min.