Interface-engineered non-volatile visible-blind photodetector for in-sensor computing.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 39747816.
- Also identified by DOI 10.1038/s41467-024-55412-6 and PMC identifier 11695636.
- Licence recorded as CC BY-NC-ND.
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Abstract
Ultraviolet (UV) detection is extensively used in a variety of applications. However, the storage and processing of information after detection require multiple components, resulting in increased energy consumption and data transmission latency. In this paper, a reconfigurable UV photodetector based on CeO<sub>2</sub>/SrTiO<sub>3</sub> heterostructures is demonstrated with in-sensor computing capabilities achieved through interface engineering. We show that the non-volatile storage capability of the device could be significantly improved by the introduction of an oxygen reservoir. A photodetector array operated as a single-layer neural network was constructed, in which edge detection and pattern recognition were realized without the need for external memory and computing units. The location and classification of corona discharges in real-world environments were also simulated and achieved an accuracy of 100%. The approach proposed here offers promising avenues and material options for creating non-volatile smart photodetectors.