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Ammonia‐Sensing Using a Composite of Graphene Oxide and Conducting Polymer (Phys. Status Solidi RRL 5/2018)
Author(s) -
Hasani Amirhossein,
Sharifi Dehsari Hamed,
Asghari Lafmejani Milad,
Salehi Alireza,
Afshar Taromi Faramarz,
Asadi Kamal,
Kim Soo Young
Publication year - 2018
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201870317
Subject(s) - pedot:pss , graphene , materials science , schottky diode , conductive polymer , optoelectronics , composite number , oxide , diode , ammonia , schottky barrier , poly(3,4 ethylenedioxythiophene) , layer (electronics) , nanotechnology , polymer , composite material , chemistry , organic chemistry , metallurgy
The performance of a room‐temperature (300 K) ammonia (NH 3 ) sensor is investigated in article no. 1800037 . The sensor is based on the organic/inorganic Schottky diode between poly (3,4‐ethylenedioxythiophene):poly (styrenesulfonate) (PEDOT:PSS):graphene oxide (GO) and n‐type GaAs. GO sheets are mixed in different concentration with PEDOT:PSS water‐based suspensions. This composite is used as an ammonia sensing layer in the n‐GaAs Schottky diode. The diode parameters and sensing performance were improved via adding an infinitesimal amount of GO into PEDOT:PSS. The ammonia sensor is shown to have high sensitivity and fast response time to different NH 3 concentrations. PEDOT:PSS:GO films have the potential to be used as a sensing layer material in Schottky diode‐based gas sensors that require high speed, high sensitivity, low power consumption, and excellent selectivity.