X-ray diffraction and Raman scattering study of thermal-induced phase transformation in verticallyaligned TiO2 nanocrystals grown on sapphire(100) via metal organic vapor deposition
學年 96
學期 2
出版（發表）日期 2008-05-09
作品名稱 X-ray diffraction and Raman scattering study of thermal-induced phase transformation in verticallyaligned TiO2 nanocrystals grown on sapphire(100) via metal organic vapor deposition
作品名稱（其他語言）
著者 C.A. Chen; K.Y. Chen,Y.S. Huang; D.S. Tsai; K.K. Tiong; F.Z. Chien
單位
出版者
著錄名稱、卷期、頁數 Journal of Crystal Growth 310(15), pp.3663–3667
摘要 We report a detailed study of thermal-induced phase transformation in TiO2 nanocrystals (NCs) via X-ray diffraction (XRD) and Raman scattering (RS) spectroscopy. Vertically aligned anatase TiO2(1 1 0) NCs were grown on the sapphire (SA)(1 0 0) substrate at 550 °C by metal organic chemical vapor deposition, using titanium-tetraisopropoxide (TTIP, Ti[OCH(CH3)2]4), as the source reagent. The effects of thermal annealing of TiO2 NCs in oxygen atmosphere between 600 and 1000 °C were investigated. XRD and RS spectra showed the onset of the phase transformation process from the as-grown anatase TiO2(1 1 0) NCs into rutile TiO2(0 0 1) at the annealing temperature of 800 °C. At annealing temperature higher than 900 °C, pure rutile phase of TiO2(0 0 1) NCs were formed and the crystalline quality of TiO2 NCs could be further improved upon higher annealing temperature.
關鍵字 A1. X-ray diffraction;A1. Nanostructures;A1. Raman scattering;A3. Metal organic chemical vapor deposition;B1. Nanomaterials;B1. Oxides
語言 en
ISSN 1873-5002
期刊性質 國外
收錄於
產學合作
通訊作者
審稿制度 0
國別 NLD
公開徵稿
出版型式 ,電子版
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/104574 )