Selective UV Sensing for Energy-Efficient UV-A Artificial Synapses Using a ZnO/ZnGa₂O₄ Heterojunction Diode.

ABSTRACT: As neuromorphic computing systems, which allow for parallel data storage and processing with high area and energy efficiency, show great potential for future storage and in-memory computing technologies. In this article, a high-performance UV detector for artificial optical synapse applications is demonstrated that can selectively detect UV-A and UV-C, with a responsivity of 407 A W^-1. The pyrophototronic effect increases photocurrent dramatically under UV-A irradiation due to heat accumulation in the ZnO layer and ZnGa₂O₄'s low thermal conductivity. In context of synaptic device, it's shown that a ZnO/ZnGa₂O₄ heterostructure can be used as a light-tunable charge trapping medium to create an electro-photoactive synapse. The photogating

SUBMITTER: Khan T 

PROVIDER: S-EPMC12019913 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature