Zheng, Yang Lee, Duckhee Koo, Hye Young Maeng, Sunglyul 2024-01-20T08:02:35Z 2024-01-20T08:02:35Z 2021-09-05 2015-01 0008-6223 https://pubs.kist.re.kr/handle/201004/125927 In this study, we report the preparation of chemically modified graphene/(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) nanocomposites and their application in hydrogen (H-2) gas sensing materials. The aqueous dispersions of graphene oxide (GO) and reduced graphene oxide (rGO) nanosheets were synthesized and further doped into the solution of PEDOT:PSS in dimethylsulfoxide (DMSO). Both the GO/PEDOT:PSS and rGO/PEDOT:PSS composite devices showed a decrease in the resistance upon hydrogen exposure at room temperature. The GO/PEDOT:PSS, a strong p-type material, formed by rectifying contact with tungsten was evaluated for the H-2 gas sensing and identified as a contact-controlled type. The rGO/PEDOT:PSS, a weak n-type material, forming an ohmic contact with tungsten was investigated for its H-2 gas sensing and identified as a body-controlled type. (C) 2014 Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD REDUCED GRAPHENE OXIDE TEMPERATURE GRAPHITE POLYMER SENSOR Chemically modified graphene/PEDOT:PSS nanocomposite films for hydrogen gas sensing Article 10.1016/j.carbon.2014.09.023 1 CARBON, v.81, pp.54 - 62 CARBON 81 54 62 scie scopus 000345682900006 2-s2.0-84922731221 Chemistry, Physical Materials Science, Multidisciplinary Chemistry Materials Science Article REDUCED GRAPHENE OXIDE TEMPERATURE GRAPHITE POLYMER SENSOR