Selectivity Improvement of Gas Sensor Based on Poly(3,4-ethylenedioxythiophene):Poly(styrenesulfonate) Thin Film by Using Imprinting Method
Penulis/Author
La Aba (1); Prof. Dr. Eng. Yusril Yusuf, S.Si., M.Si., M.Eng. (2); Prof. Dr. Mitrayana, S.Si., M.Si. (3); Prof. Dr. Eng. Kuwat Triyana, M.Si. (4)
Tanggal/Date
2012
Kata Kunci/Keyword
Abstrak/Abstract
Selectivity improvement of gas sensor based on Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) thin film to ammonia gas has been studied. The PEDOT:PSS thin films were deposited on glass and FR4 substrates by using a spin-coating technique. PEDOT:PSS solution was spread on the substrate followed by spinning at fixed rate. Then, the imprinting process of gas sensor was performed by injecting ammonia gas into the spin-coating chamber. Fi- nally, the gas sensor was dried on a controllable hot plate. Current-voltage characteristics of the films were measured by using calibrated electrometer. The results show that by imprinting of ammonia gas to the film affects the electrical con- ductivity of the film. It is also shown that the electron transport in the PEDOT:PSS thin film tends to be ohmic-contact. When the imprinted sensor is exposed in ammonia gas, we obtained that the sensor has short response and recovery time, a good repeatability (reversible), and higher sensitivity to ammonia gas. To this end, we found that ammonia im- printing on the surface of PEDOT:PSS thin film can improve the selectivity of the sensor to ammonia gas. It indicates that our method can be used for fabricating the sensor which has a single selectivity.
Rumpun Ilmu
Fisika
Bahasa Asli/Original Language
English
Level
Internasional
Status
Dokumen Karya
No
Judul
Tipe Dokumen
Aksi
1
Selectivity Improvement of Gas Sensor Based on Poly(3,4-ethylenedioxythiophene)Poly(styrenesulfonate) Thin Film by Using Imprinting Method (1).pdf
