Solution-Processed Bulk Heterojunction Solar Cells with Silyl End-Capped Sexithiophene
We fabricated solution-processed organic photovoltaic cells (OPVs) using substituted two sexithiophenes, a,w-bis(dimethyl-n-octylsilyl)sexithiophene (DSi-6T) and a,w-dihexylsexithiophene (DH-6T), as electron donors, and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) as an electron acceptor. Solut...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2013/843615 |
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| author | Jung Hei Choi Mohamed E. El-Khouly Taehee Kim Youn-Su Kim Ung Chan Yoon Shunichi Fukuzumi Kyungkon Kim |
| author_facet | Jung Hei Choi Mohamed E. El-Khouly Taehee Kim Youn-Su Kim Ung Chan Yoon Shunichi Fukuzumi Kyungkon Kim |
| author_sort | Jung Hei Choi |
| collection | DOAJ |
| description | We fabricated solution-processed organic photovoltaic cells (OPVs) using substituted two sexithiophenes, a,w-bis(dimethyl-n-octylsilyl)sexithiophene (DSi-6T) and a,w-dihexylsexithiophene (DH-6T), as electron donors, and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) as an electron acceptor. Solution-processed OPVs using DH-6T and DSi-6T showed good photovoltaic properties in spite of their poor solubility. The best performance was observed on DSi-6T : PCBM 1 : 5 (w/w) blend cell with an open circuit voltage (Voc) of 0.63 V, short circuit current density (Jsc) of 1.34 mA/cm2, fill factor (FF) of 55%, and power conversion efficiency of 0.44% under AM 1.5 G illumination. Although DH-6T has higher hole mobility than DSi-6T, the DSi-6T : PCBM blend cell showed higher hole mobility than DH-6T : PCBM cell. Therefore, DSi-6T cell showed higher device performance than DH-6T cell due to its silyl substitutions, which lead to the increase of the solubility. The incorporation of solution-processed TiO2 interfacial layer in the DSi-6T : PCBM devices significantly enhances FF due to the reduced charge recombination near active layer/Al interface. |
| format | Article |
| id | doaj-art-842d065316064ee7bb5a0fa6c19950cd |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-842d065316064ee7bb5a0fa6c19950cd2025-02-03T06:44:14ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2013-01-01201310.1155/2013/843615843615Solution-Processed Bulk Heterojunction Solar Cells with Silyl End-Capped SexithiopheneJung Hei Choi0Mohamed E. El-Khouly1Taehee Kim2Youn-Su Kim3Ung Chan Yoon4Shunichi Fukuzumi5Kyungkon Kim6Photo-Electronic Hybrids Research Center, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of KoreaDepartment of Chemistry, Faculty of Science, Kafrelsheikh University, Kafr ElSheikh 33516, EgyptPhoto-Electronic Hybrids Research Center, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of KoreaPhoto-Electronic Hybrids Research Center, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of KoreaDepartment of Chemistry, Pusan National University, Jangjeon-dong Kumjeong-gu, Busan 609-735, Republic of KoreaDepartment of Material and Life Science, Graduate School of Engineering, Osaka University, ALCA, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, JapanPhoto-Electronic Hybrids Research Center, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of KoreaWe fabricated solution-processed organic photovoltaic cells (OPVs) using substituted two sexithiophenes, a,w-bis(dimethyl-n-octylsilyl)sexithiophene (DSi-6T) and a,w-dihexylsexithiophene (DH-6T), as electron donors, and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) as an electron acceptor. Solution-processed OPVs using DH-6T and DSi-6T showed good photovoltaic properties in spite of their poor solubility. The best performance was observed on DSi-6T : PCBM 1 : 5 (w/w) blend cell with an open circuit voltage (Voc) of 0.63 V, short circuit current density (Jsc) of 1.34 mA/cm2, fill factor (FF) of 55%, and power conversion efficiency of 0.44% under AM 1.5 G illumination. Although DH-6T has higher hole mobility than DSi-6T, the DSi-6T : PCBM blend cell showed higher hole mobility than DH-6T : PCBM cell. Therefore, DSi-6T cell showed higher device performance than DH-6T cell due to its silyl substitutions, which lead to the increase of the solubility. The incorporation of solution-processed TiO2 interfacial layer in the DSi-6T : PCBM devices significantly enhances FF due to the reduced charge recombination near active layer/Al interface.http://dx.doi.org/10.1155/2013/843615 |
| spellingShingle | Jung Hei Choi Mohamed E. El-Khouly Taehee Kim Youn-Su Kim Ung Chan Yoon Shunichi Fukuzumi Kyungkon Kim Solution-Processed Bulk Heterojunction Solar Cells with Silyl End-Capped Sexithiophene International Journal of Photoenergy |
| title | Solution-Processed Bulk Heterojunction Solar Cells with Silyl End-Capped Sexithiophene |
| title_full | Solution-Processed Bulk Heterojunction Solar Cells with Silyl End-Capped Sexithiophene |
| title_fullStr | Solution-Processed Bulk Heterojunction Solar Cells with Silyl End-Capped Sexithiophene |
| title_full_unstemmed | Solution-Processed Bulk Heterojunction Solar Cells with Silyl End-Capped Sexithiophene |
| title_short | Solution-Processed Bulk Heterojunction Solar Cells with Silyl End-Capped Sexithiophene |
| title_sort | solution processed bulk heterojunction solar cells with silyl end capped sexithiophene |
| url | http://dx.doi.org/10.1155/2013/843615 |
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