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Issue 18, 2020
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A robust SiC nanoarray blue-light photodetector

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Silicon carbide (SiC) is recognized as one of the most important candidates of third generation semiconductors with totally superior physical/chemical properties and exciting applications in opto/electronic devices. In the present work, we report the exploration of high-performance blue-light photodetectors on both rigid and flexible substrates by using SiC nanoarrays, which are aligned by dielectrophoresis. The rise and decay times of the photodetector assembled on a rigid (i.e., SiO2/Si) substrate are ∼0.39 and 0.56 s, respectively, with an external quantum efficiency of 3394%, which suggested that the SiC nanoarray photodetector has high sensitivity, fast responsivity and excellent reproducibility to light irradiation with a wavelength of 445 nm. Meanwhile, 73% of the maximum photocurrent response can be maintained after 6 months. Furthermore, the as-constructed flexible photodetector based on the polyethylene terepthalate (PET) substrate was highly stable against repeated bending, demonstrating that the as-constructed SiC photodetector was robust with high flexibility and electrical stability.

Graphical abstract: A robust SiC nanoarray blue-light photodetector

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Article information

01 Feb 2020
20 Mar 2020
First published
23 Mar 2020

J. Mater. Chem. C, 2020,8, 6072-6078
Article type

A robust SiC nanoarray blue-light photodetector

J. Zheng, H. Chong, L. Wang, S. Chen, W. Yang, G. Wei and F. Gao, J. Mater. Chem. C, 2020, 8, 6072
DOI: 10.1039/D0TC00552E

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