Zero-biased and visible-blind UV photodetectors based on nitrogen-doped ultrananocrystalline diamond nanowires
| Autor: | Elluz Pacheco, Peter Feng, Ali Aldalbahi, Andrew F. Zhou, Badi Zhou |
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| Rok vydání: | 2022 |
| Předmět: |
Photocurrent
Materials science business.industry Process Chemistry and Technology Photoconductivity Nanowire Diamond Photodetector engineering.material Ray Surfaces Coatings and Films Electronic Optical and Magnetic Materials Responsivity Materials Chemistry Ceramics and Composites engineering Optoelectronics Charge carrier business |
| Zdroj: | Ceramics International. 48:3757-3761 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2021.10.158 |
| Popis: | Taking advantage of the superflat surface of ultrananocrystalline diamond (UNCD), highly precise UNCD nanowire (NW) arrays were fabricated to develop high-performance UV photodetectors. The large surface-to-volume ratio of a nanowire significantly increases the number of surface trap states, and the reduced dimensionality effectively confines the active area of the charge carrier and shortens the transit time, which results in an enhanced photoconductivity and response speed. In this paper, the zero-biased UV photodetectors based on nitrogen-incorporated ultrananocrystalline diamond nanowire arrays have been demonstrated and characterized. The estimated responsivity was 2.0 A/W for 350 nm incident light when the device operated at room temperature. The UVA and UVB photocurrent signals from this visible blind photodetector were well defined with a rise and decay time of less than 1 s. |
| Databáze: | OpenAIRE |
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