학회 |
한국재료학회 |
학술대회 |
2017년 가을 (11/15 ~ 11/17, 경주 현대호텔) |
권호 |
23권 2호 |
발표분야 |
E. 환경/센서 재료 분과 |
제목 |
Hydrogen sensor based on graphene with Pd/Ag nanocomposite |
초록 |
Hydrogen sensor based on graphene nano-composite with Pd-Ag nanoparticles was fabricated by MEMS process. Structural and morphological properties of the sensing film were studied by Energy Dispersive Analysis of X-rays (EDS) and field emission scanning electron microscopy (FESEM), respectively. The H2 sensing properties of as-formed sensor were investigated by measuring the resistance changes at different H2 concentrations. Experimental results showed high sensor response and response time after application of the heater voltage. The sensing properties of the graphene_ Pd/Ag nanocomposite thin film were more improved than those of pure palladium. The maximum gas response was 16.2% at 1000 ppm of H2 gas. The gas sensitivity of the as-formed H2 sensor showed linear behavior with the hydrogen concentration. |
저자 |
Bharat Sharma, 김정식
|
소속 |
Univ. of Seoul |
키워드 |
graphene_Pd/Ag; MEMS; microheater; hydrogen sensors; sensor response |
E-Mail |
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