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.
Highlights
We report synthesis of graphene oxide (GO)-carbon nanoparticles (CNP) nanocomposite by solution-phase mixing of the two individuals; and discuss about its applications, like thin film IR detector as well as thin film solar cell absorber
CNP were synthesized from diesel and their surface morphology was extensively studied by SEM and Atomic force microscopy (AFM)
This non-zero extinction coefficient of GO-CNP nanocomposite for different wavelength demonstrates that this material is a good light absorber, which is in agreement with Figure 5(b)
Summary
In recent years intensive research attention have been paid on the development of cost-effective, flexible, light-weight smart electronics, either by searching for new, naturally available smart materials, processing methods or by structural consideration.[1,2,3,4,5,6,7,8] High sensitivity, chemical and thermal stability, non-toxicity, mechanical compliance and bio-compatibility have led to the way for energy-efficient implantable electronic devices.[9,10] Advances in electronics have paved the way for the adoption of many different types of photodetectors, sensors by using different materials in individual or with their combination.[11,12,13,14,15,16,17,18] important research reports have been published on the versatile use of graphene and its derivatives and on carbon nanoparticles.[19,20,21,22,23]. Graphene, which is a single nano-sheet of hexagonally arrayed carbon atoms and its derivative GO obtained by chemical oxidation are drawing immense scientific and technical interest owing to their fascinating optical, electrical, mechanical, properties.[18,31,32,33,34,35,36] The main advantage of GO is that it is well dispersed in aqueous solutions due to the hydrophilic functional groups.[37] The high solubility in water makes GO an ideal substrate for catalysts in water phase reactions.[38,39] GO serves as a support material to stabilize metal nanoparticles. Human bodies are very good infrared sources and wavelength of these infrared sources at room temperature is approximately 780 nm.[51,52] Here we show GO-CNP nanocomposite as a future generation of human body radiation detector due to their exact correspondence to the absorption at 780 nm of photon wavelength This detector enables the acquisition of electrophysiological signals remotely without the necessity for physical or electrical contact with the body
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