Dual-mode narrowband organic photodetectors for self-aligned imaging in NIR-I and NIR-II
Abstract The ability to detect and image in the near-infrared (NIR) regions, specifically NIR-I (700–900 nm) and NIR-II (1000–1700 nm), is crucial for medical diagnostics and bioimaging due to their exceptional tissue penetration and absorption characteristics. Organic photodetectors (OPDs) present...
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Nature Portfolio
2025-08-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-62394-6 |
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| author | Yu Tang Zhuangmiao Wang Mingsheng Gao Jiayin Han Leiming Yuan Furong Zhu |
| author_facet | Yu Tang Zhuangmiao Wang Mingsheng Gao Jiayin Han Leiming Yuan Furong Zhu |
| author_sort | Yu Tang |
| collection | DOAJ |
| description | Abstract The ability to detect and image in the near-infrared (NIR) regions, specifically NIR-I (700–900 nm) and NIR-II (1000–1700 nm), is crucial for medical diagnostics and bioimaging due to their exceptional tissue penetration and absorption characteristics. Organic photodetectors (OPDs) present a promising solution for self-aligned imaging in these regions, due to their tunable optoelectronic properties and flexible fabrication processes. However, achieving high-performance dual-mode narrowband OPDs for NIR-I and NIR-II detection remains a significant challenge due to the inherently broadband nature of most organic semiconductor materials. In this study, we introduce a bias-switchable dual-mode narrowband OPD with a back-to-back stacked charge collection narrowing/photodiode-type double bulk heterojunction (BHJ) architecture. The dual-mode narrowband OPD exhibits excellent wavelength selectivity and enhanced imaging capabilities, facilitating self-aligned imaging in both NIR-I and NIR-II regions. Additionally, the double BHJ architecture provides design flexibility, allowing for the realization of dual-mode narrowband responses through various BHJ configurations. |
| format | Article |
| id | doaj-art-5a0f102107a9404c8d03e541bd2af6bc |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-5a0f102107a9404c8d03e541bd2af6bc2025-08-20T03:46:25ZengNature PortfolioNature Communications2041-17232025-08-011611810.1038/s41467-025-62394-6Dual-mode narrowband organic photodetectors for self-aligned imaging in NIR-I and NIR-IIYu Tang0Zhuangmiao Wang1Mingsheng Gao2Jiayin Han3Leiming Yuan4Furong Zhu5Department of Physics, Research Centre of Excellence for Organic Electronics and Institute of Advanced Materials, Hong Kong Baptist UniversityDepartment of Physics, Research Centre of Excellence for Organic Electronics and Institute of Advanced Materials, Hong Kong Baptist UniversityDepartment of Physics, Research Centre of Excellence for Organic Electronics and Institute of Advanced Materials, Hong Kong Baptist UniversityDepartment of Physics, Research Centre of Excellence for Organic Electronics and Institute of Advanced Materials, Hong Kong Baptist UniversityDepartment of Physics, Research Centre of Excellence for Organic Electronics and Institute of Advanced Materials, Hong Kong Baptist UniversityDepartment of Physics, Research Centre of Excellence for Organic Electronics and Institute of Advanced Materials, Hong Kong Baptist UniversityAbstract The ability to detect and image in the near-infrared (NIR) regions, specifically NIR-I (700–900 nm) and NIR-II (1000–1700 nm), is crucial for medical diagnostics and bioimaging due to their exceptional tissue penetration and absorption characteristics. Organic photodetectors (OPDs) present a promising solution for self-aligned imaging in these regions, due to their tunable optoelectronic properties and flexible fabrication processes. However, achieving high-performance dual-mode narrowband OPDs for NIR-I and NIR-II detection remains a significant challenge due to the inherently broadband nature of most organic semiconductor materials. In this study, we introduce a bias-switchable dual-mode narrowband OPD with a back-to-back stacked charge collection narrowing/photodiode-type double bulk heterojunction (BHJ) architecture. The dual-mode narrowband OPD exhibits excellent wavelength selectivity and enhanced imaging capabilities, facilitating self-aligned imaging in both NIR-I and NIR-II regions. Additionally, the double BHJ architecture provides design flexibility, allowing for the realization of dual-mode narrowband responses through various BHJ configurations.https://doi.org/10.1038/s41467-025-62394-6 |
| spellingShingle | Yu Tang Zhuangmiao Wang Mingsheng Gao Jiayin Han Leiming Yuan Furong Zhu Dual-mode narrowband organic photodetectors for self-aligned imaging in NIR-I and NIR-II Nature Communications |
| title | Dual-mode narrowband organic photodetectors for self-aligned imaging in NIR-I and NIR-II |
| title_full | Dual-mode narrowband organic photodetectors for self-aligned imaging in NIR-I and NIR-II |
| title_fullStr | Dual-mode narrowband organic photodetectors for self-aligned imaging in NIR-I and NIR-II |
| title_full_unstemmed | Dual-mode narrowband organic photodetectors for self-aligned imaging in NIR-I and NIR-II |
| title_short | Dual-mode narrowband organic photodetectors for self-aligned imaging in NIR-I and NIR-II |
| title_sort | dual mode narrowband organic photodetectors for self aligned imaging in nir i and nir ii |
| url | https://doi.org/10.1038/s41467-025-62394-6 |
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