Understanding polycarbazole-based polymer : CdSe hybrid solar cells
We report for the first time the fabrication and characterization of organic–inorganic bulk heterojunction (BHJ) hybrid solar cells made of poly[N-9''-hepta-decanyl-2,7-carbazole-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)] (PCDTBT) and pyridine-capped C...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Online Access: | https://hdl.handle.net/10356/97563 http://hdl.handle.net/10220/10656 |
| _version_ | 1826118576869736448 |
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| author | Lek, Jun Yan Lam, Yeng Ming Niziol, Jacek Marzec, Mateusz |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Lek, Jun Yan Lam, Yeng Ming Niziol, Jacek Marzec, Mateusz |
| author_sort | Lek, Jun Yan |
| collection | NTU |
| description | We report for the first time the fabrication and characterization of organic–inorganic bulk heterojunction (BHJ) hybrid solar cells made of poly[N-9''-hepta-decanyl-2,7-carbazole-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)] (PCDTBT) and pyridine-capped CdSe nanorods. By optimizing both CdSe loading and active layer film thickness, the power conversion efficiencies (PCEs) of PCDTBT:CdSe hybrid solar cells were able to reach 2%, with PCDTBT:CdSe devices displaying an open-circuit voltage (VOC ) that is 35% higher than P3HT:CdSe devices due to the deeper HOMO level of PCDTBT polymer. The performance of PCDTBT:CdSe devices is limited by its morphology and also its lower LUMO energy offset compared to P3HT:CdSe devices. Hence, the performance of PCDTBT:CdSe solar cells could be further improved by modifying the morphology of the films and also by including an interlayer to generate a built-in voltage to encourage exciton dissociation. Our results suggest that PCDTBT could be a viable alternative to P3HT as an electron donor in hybrid BHJ solar cells for high photovoltage application. |
| first_indexed | 2024-10-01T04:46:03Z |
| format | Journal Article |
| id | ntu-10356/97563 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:46:03Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/975632020-06-01T10:26:46Z Understanding polycarbazole-based polymer : CdSe hybrid solar cells Lek, Jun Yan Lam, Yeng Ming Niziol, Jacek Marzec, Mateusz School of Materials Science & Engineering We report for the first time the fabrication and characterization of organic–inorganic bulk heterojunction (BHJ) hybrid solar cells made of poly[N-9''-hepta-decanyl-2,7-carbazole-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)] (PCDTBT) and pyridine-capped CdSe nanorods. By optimizing both CdSe loading and active layer film thickness, the power conversion efficiencies (PCEs) of PCDTBT:CdSe hybrid solar cells were able to reach 2%, with PCDTBT:CdSe devices displaying an open-circuit voltage (VOC ) that is 35% higher than P3HT:CdSe devices due to the deeper HOMO level of PCDTBT polymer. The performance of PCDTBT:CdSe devices is limited by its morphology and also its lower LUMO energy offset compared to P3HT:CdSe devices. Hence, the performance of PCDTBT:CdSe solar cells could be further improved by modifying the morphology of the films and also by including an interlayer to generate a built-in voltage to encourage exciton dissociation. Our results suggest that PCDTBT could be a viable alternative to P3HT as an electron donor in hybrid BHJ solar cells for high photovoltage application. 2013-06-25T07:43:46Z 2019-12-06T19:44:06Z 2013-06-25T07:43:46Z 2019-12-06T19:44:06Z 2012 2012 Journal Article Lek, J. Y., Lam, Y. M., Niziol, J., & Marzec, M. (2012). Understanding polycarbazole-based polymer:CdSe hybrid solar cells. Nanotechnology, 23(31). 0957-4484 https://hdl.handle.net/10356/97563 http://hdl.handle.net/10220/10656 10.1088/0957-4484/23/31/315401 en Nanotechnology © 2012 IOP Publishing Ltd. |
| spellingShingle | Lek, Jun Yan Lam, Yeng Ming Niziol, Jacek Marzec, Mateusz Understanding polycarbazole-based polymer : CdSe hybrid solar cells |
| title | Understanding polycarbazole-based polymer : CdSe hybrid solar cells |
| title_full | Understanding polycarbazole-based polymer : CdSe hybrid solar cells |
| title_fullStr | Understanding polycarbazole-based polymer : CdSe hybrid solar cells |
| title_full_unstemmed | Understanding polycarbazole-based polymer : CdSe hybrid solar cells |
| title_short | Understanding polycarbazole-based polymer : CdSe hybrid solar cells |
| title_sort | understanding polycarbazole based polymer cdse hybrid solar cells |
| url | https://hdl.handle.net/10356/97563 http://hdl.handle.net/10220/10656 |
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