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Synthesis and photovoltaic properties of novel PPV-derivatives tethered with spiro-bifluorene unit for polymer solar cells |
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| Authors: | Sung Chul Kim B. Vijaya Kumar Naidu Seng-Kue Lee Won-Suk Shin Sung-Ho Jin Seung-Jin Jung Young-Rae Cho Jong-Min Shim Jin Kook Lee Jae Wook Lee Ji Hyeon Kim Yeong-Soon Gal |
| Affiliation: | a Department of Chemistry Education and Interdisciplinary Program of Advanced Information and Display Materials, Pusan National University, Busan 609-735, Republic of Korea b Department of Materials Science and Engineering, Pusan National University, Busan 609-735, Republic of Korea c Department of Polymer Science and Engineering, Pusan National University, Busan 609-735, Republic of Korea d Department of Chemistry, Dong-A University, Busan 604-714, Republic of Korea e Department of Chemical and Biochemical Engineering, Dongguk University, Seoul 100-715, Republic of Korea f Polymer Chemistry Lab, College of General Education, Kyungil University, Hayang 712-701, Republic of Korea |
| Abstract: | New thermally robust photoactive arylenevinylene-based conjugated polymers, poly[3,6-bis(3,7-dimethyloctyloxy)-9,9-spirobifluorenyl-2,7-vinylene] [(OC10)2-spiro-PFV] and poly[{3,6-bis(3,7-dimethyloctyloxy)-9,9-spirobifluorenyl-2,7-vinylene}-co-2-{methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene}] [(OC10)2-spiro-PFV-co-MEH-PPV], were synthesized and used to fabricate polymer solar cells. Bulk heterojunction solar cells fabricated by blending the new copolymers, spiro-PFV and (OC10)2-spiro-PFV-co-MEH-PPV, as an electron donor with the fullerene derivative, [6,6]-phenyl C61 butyric acid methyl ester (PCBM) as an electron acceptor. The effects of electron donor to acceptor ratio, thickness of photoactive layer, and the cathode structures on the power conversion efficiency (PCE) in polymer solar cells were studied. The copolymer feed ratio was found to have a considerable effect on the PCE. The maximum PCE of 1.30% was achieved with (OC10)2-spiro-PFV-co-MEH-PPV. |
| Keywords: | Polymer solar cells Bulk heterojunction Spiro-PFV PPV PCBM |
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