Highly crystalline bilayer electron transport layer for efficient conjugated polymer solar cells
Solution processed solar cells are a promising renewable energy technology due to the low fabrication costs. The most commonly used electron transport layer for solution processed organic solar cells is ZnO. However, sol-gel derived ZnO is amorphous, which limits interfacial charge transport. In thi...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/73998 |
| _version_ | 1848763153057316864 |
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| author | Xu, C. Wright, M. Elumalai, Naveen Kumar Mahmud, M. Wang, D. Upama, M. Haque, F. Uddin, A. |
| author_facet | Xu, C. Wright, M. Elumalai, Naveen Kumar Mahmud, M. Wang, D. Upama, M. Haque, F. Uddin, A. |
| author_sort | Xu, C. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Solution processed solar cells are a promising renewable energy technology due to the low fabrication costs. The most commonly used electron transport layer for solution processed organic solar cells is ZnO. However, sol-gel derived ZnO is amorphous, which limits interfacial charge transport. In this study, we demonstrate a ZnO bilayer, composed of a nanoparticle ZnO and sol-gel derived ZnO layer, as the electron transport layer in polymer solar cells incorporating the novel polymer poly [(5,6-difluoro-2,1,3-benzothiadiazol-4,7-diyl)-alt-(3,3‴-di (2-octyldodecyl)-2,2′; 5′,2″; 5″,2‴-quaterthiophen-5,5‴-diyl)] (PffBT4T-2OD). Compared with the single layer sol-gel ZnO, the bilayer displayed enhanced crystallinity. Consequently, the interfacial transport from the active layer was improved, as evidenced by dark J-V and PL spectroscopy measurements. Solar cells incorporating this bilayer ZnO layer achieved PCE values exceeding 10%, a relative improvement of 25% compared to the sol-gel ZnO devices. |
| first_indexed | 2025-11-14T10:58:56Z |
| format | Journal Article |
| id | curtin-20.500.11937-73998 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:58:56Z |
| publishDate | 2018 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-739982019-06-26T07:48:56Z Highly crystalline bilayer electron transport layer for efficient conjugated polymer solar cells Xu, C. Wright, M. Elumalai, Naveen Kumar Mahmud, M. Wang, D. Upama, M. Haque, F. Uddin, A. Solution processed solar cells are a promising renewable energy technology due to the low fabrication costs. The most commonly used electron transport layer for solution processed organic solar cells is ZnO. However, sol-gel derived ZnO is amorphous, which limits interfacial charge transport. In this study, we demonstrate a ZnO bilayer, composed of a nanoparticle ZnO and sol-gel derived ZnO layer, as the electron transport layer in polymer solar cells incorporating the novel polymer poly [(5,6-difluoro-2,1,3-benzothiadiazol-4,7-diyl)-alt-(3,3‴-di (2-octyldodecyl)-2,2′; 5′,2″; 5″,2‴-quaterthiophen-5,5‴-diyl)] (PffBT4T-2OD). Compared with the single layer sol-gel ZnO, the bilayer displayed enhanced crystallinity. Consequently, the interfacial transport from the active layer was improved, as evidenced by dark J-V and PL spectroscopy measurements. Solar cells incorporating this bilayer ZnO layer achieved PCE values exceeding 10%, a relative improvement of 25% compared to the sol-gel ZnO devices. 2018 Journal Article http://hdl.handle.net/20.500.11937/73998 10.1016/j.cap.2018.02.012 Elsevier restricted |
| spellingShingle | Xu, C. Wright, M. Elumalai, Naveen Kumar Mahmud, M. Wang, D. Upama, M. Haque, F. Uddin, A. Highly crystalline bilayer electron transport layer for efficient conjugated polymer solar cells |
| title | Highly crystalline bilayer electron transport layer for efficient conjugated polymer solar cells |
| title_full | Highly crystalline bilayer electron transport layer for efficient conjugated polymer solar cells |
| title_fullStr | Highly crystalline bilayer electron transport layer for efficient conjugated polymer solar cells |
| title_full_unstemmed | Highly crystalline bilayer electron transport layer for efficient conjugated polymer solar cells |
| title_short | Highly crystalline bilayer electron transport layer for efficient conjugated polymer solar cells |
| title_sort | highly crystalline bilayer electron transport layer for efficient conjugated polymer solar cells |
| url | http://hdl.handle.net/20.500.11937/73998 |