| Autor: |
Nguyen Nang Dinh, Tran Quang Trung, Lam Minh Long |
| Rok vydání: |
2018 |
| Předmět: |
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| Zdroj: |
Communications in Physics. 28:369 |
| ISSN: |
0868-3166 |
| DOI: |
10.15625/0868-3166/28/4/12683 |
| Popis: |
Thin films of poly(3-hexylthiophene) (P3HT) incorporated with reduced graphene oxide (rGO) and multi-walled carbon nanotubes (CNTs) were prepared by spin-coating technique. Atomic force microscope (AFM) surface morphology, UV-Vis spectra and NH3 gas sensing of the films were studied. Results showed that the P3HT embedded with a content of 20 wt.% of rGO and 10 % of CNTs (abbreviated to P3GC) resulted in the formation of nanostructured composites, exhibiting 1.50 nm-roughness surface and a semiconducting material with a bandgap of 1.92eV. These structure and composition of the P3GC film are appropriate for making film sensors whose resistance changes as a function of gas concentration. Monitoring ammonia gas by the sensors showed that the responding time of the sensing reached a value as fast as 30 s, the response at ammonia gas content of 10 ppm attained a value as large as 0.8% and the relative sensitivity was of 0.05 %/ppm. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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