Graphene oxide/carbon nanoparticle thin film based IR detector: Surface properties and device characterization

TLDR

The study synthesizes and characterizes graphene oxide–carbon nanoparticle nanocomposites for use as infrared detectors. The authors aim to develop a GO‑CNP nanocomposite infrared detector that operates without cooling and can be deployed in real‑world applications. They fabricate GO‑CNP thin‑film devices from a liquid‑phase process at ambient conditions, without additional treatments, and note the material’s potential as a p‑type absorber in thin‑film solar cells. The detector responds rapidly to human body infrared radiation with time constants of 3 s and 36 s, a responsivity of 3 mA W⁻¹, operates without cooling, and shows a prolonged current rise before saturation.

Abstract

This work deals with the synthesis, characterization, and application of carbon nanoparticles (CNP) adorned graphene oxide (GO) nanocomposite materials. Here we mainly focus on an emerging topic in modern research field presenting GO-CNP nanocomposite as a infrared (IR) radiation detector device. GO-CNP thin film devices were fabricated from liquid phase at ambient condition where no modifying treatments were necessary. It works with no cooling treatment and also for stationary objects. A sharp response of human body IR radiation was detected with time constants of 3 and 36 sec and radiation responsivity was 3 mAW−1. The current also rises for quite a long time before saturation. This work discusses state-of-the-art material developing technique based on near-infrared photon absorption and their use in field deployable instrument for real-world applications. GO-CNP-based thin solid composite films also offer its potentiality to be utilized as p-type absorber material in thin film solar cell, as well.