High Performance Nanoplasmonic UV/VIS/NIR Photodetector Fabricated in Ambient Condition
crossref(2021)
Abstract
Abstract Surface plasmon based techniques are widely used to promote the exciton generation and light absorption in solar cells and photodetectors. In this work, a feasible approach for UV-VIS-NIR photodetection using plasmon induced silicon nanowires (SiNWs) and amorphous TiO2 heterostructure is presented. The photodetector shows excellent photoresponse up to 3.5 orders of magnitude enhancement with a rise/decay time constants of 0.75/0.5 µs. Under small bias (1V), the photodetector exhibits very high responsivity up to 49 A/W at 532 nm irradiation over a broadband wavelength range from 300–1100 nm. These figures of merits represent the excellent performance over the reported heterojunction based photodetectors. Our finding offers new opportunities to engineer plasmon-based nanostructures in different fields like chemical sensors, optoelectronics and nanophotonics applications.
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