José P B Silva, Eliana M F Vieira, Katarzyna Gwozdz, Nuno E Silva, Adrian Kaim, Marian C Istrate, Corneliu Ghica, José H Correia, Mario Pereira, Luís Marques, Judith L MacManus-Driscoll, Robert L Z Hoye, Maria J M Gomes
In this work, we demonstrate, for the first time, that coupling together the pyroelectric effect, the photovoltaic effect and the plasmonic effect is a novel method to significantly enhance the performance of self-powered photodetectors in the visible region. Photodetectors based on tri-layered heterojunction of n-Si/p-SnO/n-ZnO through the inclusion of silver (Ag) nanoparticles (NPs) at the SnO/ZnO interface were fabricated. The photo-response of the device, with excitation from a chopped 650 nm wavelength laser, was carefully investigated, and it was shown that the photodetector performance is enhanced the most with the inclusion of spheroidal Ag NPs with ∼70 nm diameter...
November 27, 2023: Materials Horizons