Bilayer chlorophyll-based bio-photodetector based on Z-type charge transfer process.
In: Journal of Materials Chemistry C, Jg. 11 (2023-07-07), Heft 25, S. 8438-8445
academicJournal
Zugriff:
We have successfully prepared a bio-photodetector based on chlorophyll derivatives as all photosensitive materials. Zinc methyl 3-devinyl-3-hydroxymethyl-pyropheophorbide-a (Chl-A) and methyl 13 1 -deoxo-13 1 -dicyanomethylene-pyropheophorbide-a (Chl-D) were used as electron acceptor and donor, respectively, where the two formed a heterojunction. Although the energy alignment of the photoactive layers of the device studied here is different from that of traditional photodetectors, the device can work well in a self-driven mode. The device has an optimized configuration, i.e., indium tin oxide (ITO)/ZnO/Chl-A/Chl-D/MoO 3 /Ag, and exhibited excellent performance at self-biasing. When ZnO was applied as the electron transport layer in the ITO/ZnO/Chl-A/Chl-D/MoO 3 /Ag bio-photodetector device, the dark current density reduced significantly. Besides, the responsivity of the device reached 92.66 mA W −1 , which is an increase by ~34 times compared to the ITO/Chl-A/Chl-D/MoO 3 /Ag device, and the specific detectivity reached 2.48 × 10 11 Jones. [ABSTRACT FROM AUTHOR]
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Titel: |
Bilayer chlorophyll-based bio-photodetector based on Z-type charge transfer process.
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Autor/in / Beteiligte Person: | Sun, Yuting ; Liu, Ziyan ; Li, Yuanlin ; Xiang, Tianfu ; Li, Aijun ; He, Yuhong ; Wei, Haotong ; Sasaki, Shin-ichi ; Tamiaki, Hitoshi ; Wang, Xiao-Feng |
Zeitschrift: | Journal of Materials Chemistry C, Jg. 11 (2023-07-07), Heft 25, S. 8438-8445 |
Veröffentlichung: | 2023 |
Medientyp: | academicJournal |
ISSN: | 2050-7526 (print) |
DOI: | 10.1039/d3tc01521a |
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