Equal proportion of donor/acceptor active layer for reduced dark current in visible organic photodiode
The present study investigates a visible organic photodiode with low dark current of 0.002 mA/cm2. The active layer is a bulk heterojunction (BHJ) binary blended film composed of PolyN-9′-heptadecanyl-2,7-carbazole-alt-5,5-(4′,7′-di-2-thienyl-2′,1′,3′-benzothiadiazole) (PCDTBT) as a donor material a...
| Main Authors: | , , , , , , |
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| Format: | Article |
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Elsevier B.V.
2024
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| Online Access: | http://psasir.upm.edu.my/id/eprint/105840/ |
| _version_ | 1848864622140981248 |
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| author | Roslan, Suraya Annissa Md Sabri, Amirul Ashraf Roslan, Nur Adilah Bawazeer, Tahani M. Alsoufi, Mohammad S. Aziz, Fakhra Supangat, Azzuliani |
| author_facet | Roslan, Suraya Annissa Md Sabri, Amirul Ashraf Roslan, Nur Adilah Bawazeer, Tahani M. Alsoufi, Mohammad S. Aziz, Fakhra Supangat, Azzuliani |
| author_sort | Roslan, Suraya Annissa |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The present study investigates a visible organic photodiode with low dark current of 0.002 mA/cm2. The active layer is a bulk heterojunction (BHJ) binary blended film composed of PolyN-9′-heptadecanyl-2,7-carbazole-alt-5,5-(4′,7′-di-2-thienyl-2′,1′,3′-benzothiadiazole) (PCDTBT) as a donor material along with (6,6)-Phenyl C71 butyric acid methyl ester (PC71BM) as an acceptor material. The device was fabricated using a facile spin coating technique with the structure of ITO/PEDOT:PSS/PCDTBT:PC71BM/Al. The composition of PCDTBT and PC71BM has significantly improved the absorption of the UV–visible spectrum, especially between 300 and 650 nm. The optimized device of the blended film (1:1 blend ratio) showed a good photoresponsivity of 114 mA/W, with a fast response-recovery time of 733 ms and 597 ms, respectively. It is found that the specific detectivity obtained is 1.79×109 Jones and external quantum efficiency (EQE) is 29.13 %. The results manifested the optimized device can be employed in the fabrication of a cost-effective and highly sensitive visible organic photodiode. |
| first_indexed | 2025-11-15T13:51:44Z |
| format | Article |
| id | upm-105840 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T13:51:44Z |
| publishDate | 2024 |
| publisher | Elsevier B.V. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1058402024-05-08T23:27:03Z http://psasir.upm.edu.my/id/eprint/105840/ Equal proportion of donor/acceptor active layer for reduced dark current in visible organic photodiode Roslan, Suraya Annissa Md Sabri, Amirul Ashraf Roslan, Nur Adilah Bawazeer, Tahani M. Alsoufi, Mohammad S. Aziz, Fakhra Supangat, Azzuliani The present study investigates a visible organic photodiode with low dark current of 0.002 mA/cm2. The active layer is a bulk heterojunction (BHJ) binary blended film composed of PolyN-9′-heptadecanyl-2,7-carbazole-alt-5,5-(4′,7′-di-2-thienyl-2′,1′,3′-benzothiadiazole) (PCDTBT) as a donor material along with (6,6)-Phenyl C71 butyric acid methyl ester (PC71BM) as an acceptor material. The device was fabricated using a facile spin coating technique with the structure of ITO/PEDOT:PSS/PCDTBT:PC71BM/Al. The composition of PCDTBT and PC71BM has significantly improved the absorption of the UV–visible spectrum, especially between 300 and 650 nm. The optimized device of the blended film (1:1 blend ratio) showed a good photoresponsivity of 114 mA/W, with a fast response-recovery time of 733 ms and 597 ms, respectively. It is found that the specific detectivity obtained is 1.79×109 Jones and external quantum efficiency (EQE) is 29.13 %. The results manifested the optimized device can be employed in the fabrication of a cost-effective and highly sensitive visible organic photodiode. Elsevier B.V. 2024-01 Article PeerReviewed Roslan, Suraya Annissa and Md Sabri, Amirul Ashraf and Roslan, Nur Adilah and Bawazeer, Tahani M. and Alsoufi, Mohammad S. and Aziz, Fakhra and Supangat, Azzuliani (2024) Equal proportion of donor/acceptor active layer for reduced dark current in visible organic photodiode. Optical Materials, 147. art. no. 114781. pp. 1-8. ISSN 0925-3467; ESSN: 1873-1252 https://www.sciencedirect.com/science/article/pii/S0925346723013538 10.1016/j.optmat.2023.114781 |
| spellingShingle | Roslan, Suraya Annissa Md Sabri, Amirul Ashraf Roslan, Nur Adilah Bawazeer, Tahani M. Alsoufi, Mohammad S. Aziz, Fakhra Supangat, Azzuliani Equal proportion of donor/acceptor active layer for reduced dark current in visible organic photodiode |
| title | Equal proportion of donor/acceptor active layer for reduced dark current in visible organic photodiode |
| title_full | Equal proportion of donor/acceptor active layer for reduced dark current in visible organic photodiode |
| title_fullStr | Equal proportion of donor/acceptor active layer for reduced dark current in visible organic photodiode |
| title_full_unstemmed | Equal proportion of donor/acceptor active layer for reduced dark current in visible organic photodiode |
| title_short | Equal proportion of donor/acceptor active layer for reduced dark current in visible organic photodiode |
| title_sort | equal proportion of donor/acceptor active layer for reduced dark current in visible organic photodiode |
| url | http://psasir.upm.edu.my/id/eprint/105840/ http://psasir.upm.edu.my/id/eprint/105840/ http://psasir.upm.edu.my/id/eprint/105840/ |