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題 名 | 硫化鋅攙雜鈰(Ce)在惰性氣氛下燒成之螢光粉發光特性研究=The Study of the Luminescence of ZnS: Ce Phosphors Under Inert Atmosphere |
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作 者 | 唐自標; 徐開鴻; 楊木榮; 陳克紹; | 書刊名 | 陶業學刊 |
卷 期 | 3:1 1999.01[民88.01] |
頁 次 | 頁18-24 |
分類號 | 440.33 |
關鍵詞 | 硫化鋅; 激活劑; 助熔劑; 燒成; Zinc sulfide; Activator; Flux; Firing; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究以硫化鋅為母體,攙雜鈰作為激活劑,添加氯化鈉當助熔劑,在750℃∼1050℃惰性氣氛下燒成,以探討當鈰含量改變(0.0001∼0.01摩爾分率)時,其發光特性之變化。以750℃燒成時,波長隨鈰含量增加改變不大;發光強度則隨鈰含量增加而增強。950℃燒成時,波長隨鈰含量之增加,量少時改變較偏向短波長(偏藍)側,量多時改變較偏向長波長(偏綠)側;而發光強度,則在鈰含量0.002鈰摩爾分率時,有較強之發光強度。1050℃燒成時,波長改變與950℃燒成時略同,但較偏向短波長(偏藍)側;發光強度則隨鈰含量增加而下降。洗滌後鈰含量在高溫燒成者殘存較多,且其殘存量較高者,發光效果佳;氯與鈉成份之改變,將造成氯離子、鈉空孔之形成,而使發光效果變得較佳。故其製作較佳之條件為950℃惰性氣氛下燒成,鈰含量0.002鈰摩爾分率,再經洗滌者。 |
英文摘要 | After adding Ce as activator and NaC1 as flux into Zinc sulfide host lattice and firing in inert atmosphere, the temperature range between 750-950℃, the luminescence of Zinc sulfide will vary dependent up the amount of Ce(0.0001-0.01 mol fraction) added. When formed at 750℃, the intensity of luminescence of Zinc sulfide increased as increasing the concentration of Ce, but the wavelength remain almost unchanged. When fired at 950℃, the changes of wavelength towards short wavelength (light blue) at low Ce concentration, but towards long wavelength at high Ce concentration. The highest luminescence intensity was found at 0.002 mol fraction of Ce concentration. When fired at 1050℃, the change of wavelength remained almost the same as it was formed at 950℃, but switched towards short wavelength (light blue) and its luminescence intensity decreased as increasing Ce concentration. After washing the Zinc fulfide which formed at higher temperature contain more Ce residual than those formed at lower temperature and present better luminescence characteristics. This is believed to be the formation of defects resulting from the washed off of the Chlorine and Sodium ions during the washing process. It can be concluded that the best conditions to form luminescence Zinc Sulfied are 0.002mol fraction of Ce addition and fire in inert atmosphere at 95℃ following by washing process. |
本系統中英文摘要資訊取自各篇刊載內容。