Seo, Young Gon Lee, Hyunjung Kim, Kyungkon Lee, Wonmok 2024-01-20T19:32:49Z 2024-01-20T19:32:49Z 2021-09-05 2010-04 1542-1406 https://pubs.kist.re.kr/handle/201004/131575 We present a sol-gel derived anatase titania nanoparticle system which can be spin-coated to form thin films having high refractive index and excellent optical clarity. Stable titania suspensions were obtained through peptization of crude product in the presence of tetramethylammonium hydroxide. The particle sizes and morphologies were finely controlled by mild hydrothermal treatment at 200 degrees C. Three titania suspensions obtained by different hydrothermal reaction time showed stable suspensions without significant flocculation, and subsequently spin coated on the glass substrates. Without calcinations step, the resulting films exhibited fairly good optical clearance and refractive indices as high as 2.05. Narrow dispersity of the particle size and the stability of titania suspension also enabled the fabrication of inverse opal structure by templating method which could be further utilized as various applications such as photonic bandgap materials and photoelectrode for solar cells. English TAYLOR & FRANCIS LTD HYDROTHERMAL SYNTHESIS TIO2 NANOPARTICLES Transparent Thin Films of Anatase Titania Nanoparticles with High Refractive Indices Prepared by Wet Coating Process Article 10.1080/15421400903584424 1 MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.520, pp.477 - 484 MOLECULAR CRYSTALS AND LIQUID CRYSTALS 520 477 484 scie scopus 000277666200028 2-s2.0-77951438781 Chemistry, Multidisciplinary Crystallography Materials Science, Multidisciplinary Chemistry Crystallography Materials Science Article HYDROTHERMAL SYNTHESIS TIO2 NANOPARTICLES Anatase hydrothermal reaction inverse opal solution process thin film titania nanoparticle transparent