Light-induced tunable threshold voltage and synaptic behavior of a solution-processed indium oxide thin film transistor for logic computing and image denoising
Pengsheng Li, Zixu Sa, Zeqi Zang, Guangcan Wang, Mingxu Wang, Lei Liao, Feng Chen, Zaixing Yang
Abstract
by illumination, the TFTs are constructed as inverters, displaying tunable voltage gains from 5.7 to 10.6. Owing to the excellent photo-synaptic behavior, the TFTs are employed to demonstrate the optoelectronic logic functions of "OR", "AND", "NOR", and "NAND". Moreover, a 5 × 5 TFTs array is employed to demonstrate the real-time image preprocessing and image denoising functions, displaying an impressive accuracy of 96%. Furthermore, the improvement of the recognition accuracy will increase to a maximum value of 88%. This work shows the potential of amorphous indium oxide TFTs in future multifunctional logic circuits and efficient, all-optical neuromorphic vision systems.