@misc{10481/86682,
year = {2023},
url = {https://hdl.handle.net/10481/86682},
abstract = {In this work, gas sensors using laser-reduced graphene
oxide (LrGO) as sensitive layer have been fabricated and studied.
The laser-synthetized material were structurally and electrically
characterized by means of Scanning Electron Microscopy (SEM),
Raman spectroscopy, X-ray Photoelectron Spectroscopy (XPS) and
the four-point contact method. The gas-sensing properties of the
samples were studied by their exposition to 10 ppm to 100 ppm of
ethanol and 25 ppm to 130 ppm of ammonia. The results show that
the devices present an electrical response corresponding to a purely
resistive behavior up to 100 kHz. It is also demonstrated that the
resistivity of the sensing layer increases as the gas concentration
increases; being of 0.0402 ± 0.001 [%/ppm] for the case of ammonia
and 0.0140 ± 0.001 [%/ppm] for the case of ethanol. These results
outperform existing sensors and establish a better balance in terms of simplicity, sensitivity, linearity and technology
sustainability. In summary, this work especially shows the potential of LrGO for low-cost and low-energy gas sensors
fabrication.},
organization = {MCIN/AEI/10.13039/501100011033: TED2021-129949A-I00},
organization = {Junta de Andalucía},
organization = {FEDER funds: ProyExcel_00268, B-RNM-680-UGR20, P20_00265, P20_00633},
organization = {Spanish Ministry of Sciences and Innovation  PID2020-117344RB-I00},
organization = {Ramón y Cajal fellow RYC2019-027457-I},
organization = {María Zambrano fellow C21.I4.P1},
publisher = {IEEE},
keywords = {C2H5OH gas sensor},
keywords = {Graphene},
keywords = {NH3 gas sensor},
keywords = {Reduced graphene oxide (rGO)},
title = {Demonstration of bare Laser reduced Graphene Oxide sensors for Ammonia and Ethanol},
doi = {10.1109/JSEN.2023.3298823},
author = {Rivadeneyra Torres, Almudena and Gerardo, Denice and Romero, Francisco J. and Toral López, Víctor and Moraila-Martínez, Carmen Lucía and Morales Santos, Diego Pedro and Rodríguez Santiago, Noel},
}