Event Details

Condensed Matter seminar

In recent years, with the rapid development of the ultraviolet (UV) LED technology, UV communication has gained attention due to its inherent advantages such as low-solar background noise, non-line-of-sight (NLOS) communication, low-power miniaturized transceiver, high power densities, high resistance to jamming and huge unlicensed bandwidth.1-4 However, the technology operating in deep-ultraviolet (DUV) range is still far from product realization due to the unavailability of efficient solar-blind photodetectors. In this talk, I will present an overview of different deployment scenarios of DUV solar-blind photodetectors for different applications.2-3 Device performance of DUV photodetectors based on solution-processed metal-oxide quantum dots and nanostructures will be discussed.2-3 Our results based on the optical properties and device performance studies show that Gallium oxide can be used as an alternative active material for DUV detection.2 Finally, I will highlight the record efficiency by any solution-processed DUV photodetector with excellent solar-blindness properties.

1. Xu, J. et al. J. Mater. Chem. C 7, 8753–8770 (2019).

2. Mitra, S. et al. ACS Appl. Mater. Interfaces 11, 38921–38928 (2019).

3. Mitra, S. et al. Adv. Opt. Mater. 1900801, 1900801 (2019).

4. Mitra, S. et al. Nano Energy 48, 551–559 (2018).

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