Controllable Laser Reduction of Graphene Oxide Films for Photoelectronic Applications

Stanislav Evlashin, Pavel Dyakonov, Roman Khmelnitsky, Sarkis Dagesyan, Andrey Klokov, Andrey Sharkov, Peter Timashev, Svetlana Minaeva, Konstantin Maslakov, Sergey Svyakhovskiy, Nikolay Suetin

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

This article presents a new simple method of creating light-absorbing carbon material for optical devices such as bolometers. A simple method of laser microstructuring of graphene oxide is used in order to create such material. The absorption values of more than 98% in the visible and more than 90% in the infrared range are achieved. Moreover thermal properties of the films, such as temperature dependence and the thermal response of the samples, are studied. The change in resistance with temperature is 13 Ohm K-1, temperature coefficient of resistance (TCR) is 0.3% K-1, and the sensitivity is 0.17 V W-1 at 300 K. Thermal conductivity is rather high at ∼104 W m-1 K-1 at 300 K. The designed bolometer operates at room temperature using incandescent lamp as a light source. This technique suggests a new inexpensive way to create a selective absorption coating and/or active layer for optical devices. Developed GO and rGO films have a large surface area and high conductivity. These properties make carbon coatings a perfect candidate for creating a new type of optoelectronic devices (gas sensors, detectors of biological objects, etc.).

Original languageEnglish
Pages (from-to)28880-28887
Number of pages8
JournalACS Applied Materials and Interfaces
Volume8
Issue number42
DOIs
Publication statusPublished - 26 Oct 2016
Externally publishedYes

Keywords

  • bolometers
  • graphene oxide
  • laser microstructuring
  • optical properties
  • thermal properties

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