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論文
【年度】104
年研發成果
【項目】
論文
【領域】
關鍵技術科專
【類別】
生醫材化
| 計畫名稱 | 醫療診斷X光立體影像感測器關鍵技術開發 | | 論文名稱 | The TiO2 Refraction Film for CsI Scintillator | | 論文類型 | 期刊論文 | | 發表處 | International Journal of Chemical, Nuclear, Materials and Metallurgical Engineering Vol:9, No:5, 2015 | | 發表人 | C. C. Chen, C. W. Hun, C. J. Wang, C. Y. Chen, J. S. Lin, K. J. Huang | | 發表日期 | 2015/10/31 | | 國家 | 國外 | | 內容摘要 | Cesium iodide (CsI) melt was injected into anodic
aluminum oxide (AAO) template and was solidified to CsI column.
The controllable AAO channel size (10~500 nm) can makes CsI column size from 10 to 500 nm in diameter. In order to have a shorter light irradiate from each singe CsI column top to bottom the AAO template was coated a TiO2 nano-film. The TiO2 film acts a refraction film and makes X-ray has a shorter irradiation path in the CsI crystal
making a stronger the photo-electron signal. When the incidence light irradiate from air (R=1.0) to CsI’s first surface (R=1.84) the first
refraction happen, the first refraction continue into TiO2 film (R=2.88) and produces the low angle of the second refraction. Then the second refraction continue into AAO wall (R=1.78) and produces
the third refraction after refractions between CsI and AAO wall (R=1.78) produce the fourth refraction. The incidence light through TiO2film and the first surface of CsI then arrive to the second surface
of CsI. Therefore, the TiO2 film can has shorter refraction path of incidence light and increase the photo-electron conversion efficiency |
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