Ge-Based Visible-Infrared Bipolar Floating-Gate Phototransistor for Broad-Spectrum Retinal Bionics.

ABSTRACT: Bipolar cells play a crucial role in perceiving, transmitting, and processing visual information by effectively segregating visual signals into ON and OFF pathways. However, conventional visual signals are predominantly confined to the visible (Vis) wavelength range, which significantly restricts the potential applications of bipolar cells. Here, a germanium (Ge)-based floating-gate tungsten diselenide (WSe₂) phototransistor capable of mimicking broad-spectrum bipolar cell functionality is proposed, which extend the utility from artificial retinal systems to advanced image processing applications. The floating gate of the phototransistor can non-volatilely storage electrons/holes, modulating the WSe₂ channel to exhibit bipolar characteristics. Under distinct bottom ga

SUBMITTER: Zhang Q 

PROVIDER: S-EPMC12677644 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature