The effect of additive on growth of poly(3-hexylthiophene) nanofibers and its organic photovoltaics application
Organic photovoltaic (OPV) with power conversion efficiency (PCE) of 7% has been demonstrated in literature and has since attracted a lot of interest within the scientific community. One of the best OPVs are based on bulk heterojunctions (BHJ) of poly(3-hexylthiophene): [6,6]-phenyl C61-butyric acid...
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| 格式: | Final Year Project (FYP) |
| 语言: | English |
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2010
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| 在线阅读: | http://hdl.handle.net/10356/35663 |
| _version_ | 1826114571976310784 |
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| author | Khaw, Lina. |
| author2 | Lam Yeng Ming |
| author_facet | Lam Yeng Ming Khaw, Lina. |
| author_sort | Khaw, Lina. |
| collection | NTU |
| description | Organic photovoltaic (OPV) with power conversion efficiency (PCE) of 7% has been demonstrated in literature and has since attracted a lot of interest within the scientific community. One of the best OPVs are based on bulk heterojunctions (BHJ) of poly(3-hexylthiophene): [6,6]-phenyl C61-butyric acid methyl ester (P3HT:PCBM). However, to achieve this PCE, heat treatment was needed to improve the π-π stacking of P3HT. Thus, thermal-free method is preferable to obtain higher PCE. Approaches such as incorporation of additive and preassembling P3HT into nanofiber have been adopted as thermal-free methods in modifying blend morphology. In this project, we studied the effect of addition of regio-random P3HT (rra-P3HT) and monomer 3HT in the growth of P3HT-nanofiber following its applications in OPV devices based on its blend with PCBM (P3HT-nf:PCBM).
For the system with rra-P3HT additions, UV-vis and AFM characterization techniques confirmed the ordered structures of P3HT. However, the rra-P3HT based devices did not show improvement in PCE. This could be due to the reduction in photocurrent which caused by the decrease in hole mobility. However, 3HT-based devices showed an enhancement in photocurrent but a lower open-circuit voltage. However, the overall PCE improved to around 2.6% by adding ratio of 3:10 P3HT:3HT. The enhancement in short-circuit current was due to the increase in crystallinity of P3HT. |
| first_indexed | 2024-10-01T03:41:17Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/35663 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:41:17Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | ntu-10356/356632023-03-04T15:35:27Z The effect of additive on growth of poly(3-hexylthiophene) nanofibers and its organic photovoltaics application Khaw, Lina. Lam Yeng Ming School of Materials Science and Engineering DRNTU::Engineering Organic photovoltaic (OPV) with power conversion efficiency (PCE) of 7% has been demonstrated in literature and has since attracted a lot of interest within the scientific community. One of the best OPVs are based on bulk heterojunctions (BHJ) of poly(3-hexylthiophene): [6,6]-phenyl C61-butyric acid methyl ester (P3HT:PCBM). However, to achieve this PCE, heat treatment was needed to improve the π-π stacking of P3HT. Thus, thermal-free method is preferable to obtain higher PCE. Approaches such as incorporation of additive and preassembling P3HT into nanofiber have been adopted as thermal-free methods in modifying blend morphology. In this project, we studied the effect of addition of regio-random P3HT (rra-P3HT) and monomer 3HT in the growth of P3HT-nanofiber following its applications in OPV devices based on its blend with PCBM (P3HT-nf:PCBM). For the system with rra-P3HT additions, UV-vis and AFM characterization techniques confirmed the ordered structures of P3HT. However, the rra-P3HT based devices did not show improvement in PCE. This could be due to the reduction in photocurrent which caused by the decrease in hole mobility. However, 3HT-based devices showed an enhancement in photocurrent but a lower open-circuit voltage. However, the overall PCE improved to around 2.6% by adding ratio of 3:10 P3HT:3HT. The enhancement in short-circuit current was due to the increase in crystallinity of P3HT. Bachelor of Engineering (Materials Engineering) 2010-04-22T06:28:20Z 2010-04-22T06:28:20Z 2010 2010 Final Year Project (FYP) http://hdl.handle.net/10356/35663 en Nanyang Technological University 51 p. application/pdf |
| spellingShingle | DRNTU::Engineering Khaw, Lina. The effect of additive on growth of poly(3-hexylthiophene) nanofibers and its organic photovoltaics application |
| title | The effect of additive on growth of poly(3-hexylthiophene) nanofibers and its organic photovoltaics application |
| title_full | The effect of additive on growth of poly(3-hexylthiophene) nanofibers and its organic photovoltaics application |
| title_fullStr | The effect of additive on growth of poly(3-hexylthiophene) nanofibers and its organic photovoltaics application |
| title_full_unstemmed | The effect of additive on growth of poly(3-hexylthiophene) nanofibers and its organic photovoltaics application |
| title_short | The effect of additive on growth of poly(3-hexylthiophene) nanofibers and its organic photovoltaics application |
| title_sort | effect of additive on growth of poly 3 hexylthiophene nanofibers and its organic photovoltaics application |
| topic | DRNTU::Engineering |
| url | http://hdl.handle.net/10356/35663 |
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