Coupling Behaviors of Surface Plasmon Polariton and Localized Surface Plasmon with an InGaN/GaN Quantum Well

Nanoplasmonically Enhanced High-Performance Metastable Phase α-Ga2O3 Solar-Blind Photodetectors

“…Nevertheless, obtaining photoconductive gain will reduce the response speed of the device, and the avalanche multiplication is strongly dependent on the device structure and crystalline quality. , As for α-Ga 2 O 3 , the design of avalanche structure requires a higher doping concentration. Recently, Ag and Au nanoparticles have been used on GaN LEDs and solar cells to improve the optoelectronic device performance. − The ultraviolet light can excite surface plasmons and produce electron–photon resonance and hence results in the formation of a localized field. − The plasmonic resonance of metallic Au and Ag are mainly near UV and visible regions, which is far from the solar-blind deep UV spectral region and thus results in parasitic absorption of ultraviolet light when interacting with such nanoparticles (NPs). − Therefore, Al NPs with higher resonance energy are more suitable for the preparation of solar-blind photodetectors. However, the research of α-Ga 2 O 3 photodetectors integrated with Al NPs is still lacking, and its physical mechanism remains to be explored.…”