Work

Large‐Area Hydrogenated Amorphous Silicon Schottky Photosensor Arrays for Display Integration

Year: 2025

Type: article

Abstract: ABSTRACT In this work, a system for the real‐time spatially resolved detection of visible light on a large area is realized on glass. Schottky photodiodes, consisting of hydrogenated amorphous silicon (a‐Si:H) and molybdenum–tantalum (MoTa), are employed as detectors. The detectors exhibit an internal quantum efficiency of up to 70.96% and a response time smaller than 20 μs. The noise equivalent power was measured at 2.424e‐10 W/√Hz. Process compatibility with commonly employed amorphous indium gallium zinc oxide (a‐IGZO) and a‐Si:H thin‐film transistors (TFT) is shown. The driving and real‐time readout of a photosensor array is demonstrated using a microcontroller and a current‐input ADC.

Source: Journal of the Society for Information Display

DOI: 10.1002/jsid.2116

Authors: Marco M. Dettling, Patrick Schalberger, Yannick Schellander, Norbert Fruehauf

Institution: University of Stuttgart

Language: English

Topic: Thin-Film Transistor Technologies

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,400

Funder: Universität Stuttgart