奈米級YAG螢光粉體之製造方法Process for producing nanoscale yttrium aluminum garnet (YAG) fluorescent powders

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

10/285,095

專利證號

US 6,869,544 B2

專利獲證名稱

奈米級YAG螢光粉體之製造方法Process for producing nanoscale yttrium aluminum garnet (YAG) fluorescent powders

專利所屬機關 (申請機關)

國立成功大學

獲證日期

2005/03/22

技術說明

將所需之陽離子金屬鹽類形成水溶液，並添加適當之鉗合劑使之與釔、鈰及鋁 完全錯合，經由過濾烘乾後，添加一去除羥基（-OH）之化合物(HMDS)並烘乾 後，經由煆燒之後即可得到純相之YAG及YAG：Ce螢光粉體。且經由XRD、BET、 Size distribution、SEM、TEM及PL對所製成之螢光粉體做性質檢測，可知其 表面積達37.25g/m2，平均粒徑為31.6nm。而在PL檢測方面；其激發光譜為 387-554nm且最大之強度為468nm，可得到約480-660nm範圍且最大發射光譜強 度位於529nm之放射光。 Phase-pure YAG and YAG:CE phosphor particles are synthesized by the calculation of the precursors. The precursors are prepared by adding HMDS to the dried salt solutions, and then dried. The salt solutions are aqueous solution of yttrium, cerium, and aluminium nitrates. Using cation salts to dissolve in DI water, adding appropriate The X-ray diffraction、 SEM、 BET、TEM were utilized in the characterization of phase purity and microstructure of phosphor nanoparticles. PL spectroscopy was utilized to characterized the optical properties. The minimum grain size was found to be 31.6 nm, whereas the corresponding specific surface area was determined to be 37.25 g/m2 for YAG phase. For PL, the excited spectrum is between 387 to 554 nm and the maximum intensity is 468nm；the emission spectrum is between 480 to 660 nm and the maximum intensity is 529 nm.

備註

本部(收文號1050039975)同意該校105年6月7日成大研總字第1054500403號函申請終止維護專利55件(成功)

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