| 학회 | 한국재료학회 |
| 학술대회 | 2015년 가을 (11/25 ~ 11/27, 부산 해운대그랜드호텔) |
| 권호 | 21권 2호 |
| 발표분야 | B. 나노화학/바이오 재료 |
| 제목 | Mass-producible synthesis of indium-tin oxide nanoparticles through a modified plasma electrolytic oxidation (PEO) process |
| 초록 | Various materials have been studied to be used as transparent conductive oxides (TCOs) with high optical transparency and electrical conductivity in a visible light. As many study showed, the most promising material is indium-tin oxide (ITO) that is an n-type semiconductor with a wide band gap of 3.5 eV. According to the characteristic of high optical transparency and low resistance, it has been used as a film-based devices of flat-panel displays, gas sensors, reflective films and photovoltaic cells. To fabricate ITO-nanoparticles, various method were studied such as hydrothermal, sol-gel and co-precipitation method. However, these processes need to control the sensitive conditions such as solution temperature, pH and spend much time while drying synthesized powders. To overcome these disadvantages, the plasma electrolytic oxidation (PEO) process is applied on the indium tin alloy. PEO process is an advanced technic of anodizing that produces more thick and durable oxide layer on the easy-corrosive materials such as magnesium, aluminum and zinc. By controlling a condition of the solution, nanoparticles can be produced without forming coating layer on a metal surface. The parameters of electrolyte concentration and frequency of the power supply were the main facts that affected the morphologies of the synthesized nanoparticles. The particle sizes could be controlled between 95.61 ± 19.10 nm to 130.69 ± 28.34 nm. The synthesized nanoparticles showed the cubic structure of indium hydroxide according to the XRD analysis (JCPDS card no. 16-0161). To transform indium tin hydroxide into indium tin oxide nanoparticles, the calcination process was added at the temperature of 500oC for 2 hours. As a result, indium tin oxide could be synthesized (JCPDS card no. 06-0417). |
| 저자 | 강성웅, 좌용호, 김태형 |
| 소속 | 한양대 |
| 키워드 | <P>plasma electrolytic oxidation(PEO); Nanoparticle; Indium tin oxide</P> |
