| 학회 |
한국화학공학회 |
| 학술대회 |
2015년 가을 (10/21 ~ 10/23, 일산 KINTEX) |
| 권호 |
21권 2호, p.1959 |
| 발표분야 |
유동층 |
| 제목 |
Characteristics of SnO2:Ga powder prepared by the liquid drop fluidized reactor for liquid component detection |
| 초록 |
Optical and electrical characteristics of Ga doped SnO2 powder prepared by the liquid drop fluidized reactor were investigated to develop the sensor material for the detection of liquid component in the room-temperature. Effects of Ga content doped into the lattice of SnO2 host material on the optical and electrical properties of SnO2:Ga were examined. Sn4+ in the host lattice was successfully substituted by Ga3+, which resulted in the charge transfer at the surface of SnO2:Ga in order to maintain the charge balance. The substitution of Sn4+ by Ga3+ was identified by means of XRD analysis : The main peak of XRD was shifted slightly to the low angle with an increase in the Ga content doped into the lattice of SnO2. The charge transfer was analyzed by means of UV-visible absorption spectra and PL spectra. The doping of Ga into SnO2 could reduce the band gap energy, which was analyzed by using the DRS analysis. The room-temperature UV-visible absorption spectra exhibited that the as-prepared SnO2:Ga could respond to the methyl alcohol, ethyl alcohol, isopropyl alcohol and ammonium hydroxide within 5 seconds. |
| 저자 |
강 용1, 강경민2, 이찬기3, 유동준1, 임대호1
|
| 소속 |
1충남대, 2젠텍, 3고등기술(연) |
| 키워드 |
Liquid detection; Tin oxide; Ga doping; Optical & electrical properties
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| E-Mail |
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| 원문파일 |
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