S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Materials Science and Engineering (재료공학부) Theses (Master's Degree_재료공학부)
Synthesis and Characterization of Semiconducting Conjugated Polymers Containing 2,7-Dibenzosilole for High Open-Circuit Voltage in Organic Solar Cells
높은 개방전압의 유기태양전지를 위한 2,7-Dibenzosilole 기반 전도성 고분자의 합성과 특성
- 공과대학 재료공학부(하이브리드 재료)
- Issue Date
- 서울대학교 대학원
- Benzo[c][1 ; 2 ; 5]oxadiazole ; Conjugated polymers ; High open circuit voltage ; Dibenzosilole ; Organic solar cells
- 학위논문 (석사)-- 서울대학교 대학원 : 재료공학부(하이브리드 재료), 2014. 2. 조원호.
- We synthesized a donor-acceptor (D–A) type conjugated polymer for organic solar cells composed of 2,7-dibenzosilole (DBS) as an electron-rich unit and benzo[c][1,2,5]oxadiazole (BO) as an electron-deficient unit by Suzuki coupling. We also synthesized dithienosilole based D–A type alternating copolymer, PDTSDTBO as reference. The HOMO energy levels of PDBSDTBO and PDTSDTBO were -5.52 eV and -5.23 eV, respectively.The solar cell device fabricated by blending with PDBSDTBO and PC71BM as the active layer has higher VOC than that of the PDTSDTBO-based device, mainly due to the deeper HOMO energy level. The device fabricated with PDBSDTBO and PC71BM exhibits a power conversion efficiency (PCE) of 2.34%, which is higher than that of PDTSDTBO-based device.