本實驗以固態反應法製備Sr2MgSi2O7:Eu3+螢光體,在合成的過程中,先藉由不同參數,燒成溫度、持溫時間與H3BO3助熔劑添加量來確定合成母體Sr2MgSi2O7純相的最佳參數,接著探討在不同摻雜激活劑Eu3+的濃度對於螢光體發光特性之影響 由實驗結果顯示,Eu3+之 f→f躍遷光譜呈現出尖銳的線性光譜,以近紫外光波長395nm為激發波長可得最佳的放射光譜,而得到放射峰為613nm的紅光放射,此發光躍遷主要為5D0→7FJ(J=0,1,2,3,4)的躍遷,放射光譜主要出現在578nm(5D0→7F0)、589nm(5D0→7F1)613nm(5D0→7F2)、652nm(5D0→7F3)、702nm(5D0→7F4)的峰值,且發光強度隨著激活劑添加量增加而上升,當Eu摻雜量為6mole%時,有最佳發光強度,超過此摻雜量後即產生濃度消光,並在1350°C、持溫4小時、添加5wt% H3BO3時有最佳的發光強度
The study used the solid state reaction to prepare the Sr2MgSi2O7:Eu3+ Phosphor .We found the optimal parameters to synthesize the Host, Sr2MgSi2O7 ,by different calcined temperature、holding time、different H3BO3 c Concentration .We probe the influence of luminescence characteristic on Sr2MgSi2O7:Eu3+ phosphors by different doping concentration of Eu The result shows the sharp emission peak at 613nm that attributed to the typical f→f transition of Eu3+, whereas the emission peaks﹕578nm、589nm、613nm、652nm、702nm are attributed to the Eu3+ 5D0→7FJ=0 to 4 at the excitation 395nm. The luminous intensity increased as raising the concentration of activator, and the maximum luminous intensity was observed with Eu 6mole%、H3BO3 5wt% ,and fired at 1350°C for 4hours.