Controllable Laser Reduction of Graphene Oxide Films for Photoelectronic Applications

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‡, and Nikolay Suetin†# 
†D. V. Skobeltsyn Institute of Nuclear Physics, ‡Department of Physics, §Department of 
Chemistry, M. V. Lomonosov Moscow State University, 1(2) Leninskie Gory, 119991 
Moscow, Russia 
∥
P. N. Lebedev Physical Institute, Russian Academy of Sciences, 53 Leninsky Prospect, 
119991 Moscow, Russia 
⊥
Institute on Laser and Information Technologies RAS, 2 Pionerskaya,142092 
Troitsk, Russia 
# Skolkovo Institute of Science and Technology, 3 Nobel, 143025 Skolkovo, Russia 
ACS Appl. Mater. Interfaces, Article ASAP 
DOI: 10.1021/acsami.6b10145 
Publication Date (Web): October 5, 2016 
Copyright © 2016 American Chemical Society 
*E-mail: stevlashin@gmail.com. 
Abstract 

200 
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.). 
Keywords:
bolometers; graphene oxide; laser microstructuring; optical properties; thermal properties 
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