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송한상,최두진,유광수,정형진,김창은 한국결정성장학회 1992 韓國結晶成長學會誌 Vol.2 No.2
Titanium-iso-propoxide[$Ti(OC_3H_7)_4$]와 Tetra-ethyl-lead $[Pb({C_2}{H_5})_4]$를 사용한 MOCVD법으로 PbTi$O_3$박막을 55$0^{\circ}C$에서 증착하였다. Ar과 $O_2$를 각각 운반 및 반응기체로 사용하였으며, 열처리에 따른 박막의 두께와 굴절지수의 변화, Xtjs 회절 분석, CV 특성 측정등을 행하였다. 열처리에 따른 CV 특성 측정 결과 PbTi$O_3$는 Si기판과 계면 반응을 하는 것으로 생각되며, X선 회절 분석 결과 $PbTiO_3$의 특성 peak들이 관찰되었다. 열처리 시간 및 온도의 증가에 따라 박막의 두께는 감소하고, 굴절지수는 증가하는 경향을 보여 주었다. $PbTi0_3$ thin films were deposited at $550^{\circ}C$ by MOCVD method using titanium-iso-propoxide [$Ti(OC_3H_7)_4$] and tetra-ethyl-lead $[Pb(C_2H_5)_4]$as starting materials. In the present study, Ar and $O_2$were used as a carrier gas and a reaction gas, respectively, and the change of thickness and refractive index, Xray diffraction analysis, and CV characteristic measurements of the films were systematically investigated. As a result of CV characteristic analysis of the annealed $PbTiO_3$ thin films, it is assumed that the films interact with Si substrate at the interface, and X-ray diffraction patterns of the films show characteristic peaks for $PbTiO_3$ With increasing the annealing temperature and time, the thickness of the films tends to decrease but their refractive index increases.
최두진,임공진,정형진,송한상,김창은 한국세라믹학회 1990 한국세라믹학회지 Vol.27 No.6
Al2O3 film was chemically deposited by pyrolytic decom,positio of the Al-tri-isopropoxide/N2 system at 350$^{\circ}C$, 30 and 1.86torr. FTIR analysis showed a deposited film was a hydrated alumina and transformed to an anhydrous one after heat treatment(1hr, >800$^{\circ}C$ or 4hr, >500$^{\circ}C$) in N2 atmosphere. This transformation influenced on the CV-hysteresis of Si-Al2O3 structure. Also, a pH sensitivity of EIS(Electrolyte-Insulator-Semiconductor)structure using Si-Al2O3/SiO2 film was 50mV/pH in the range of pH 3 to 7.