دراسة خواص التألق في بلورة تنغستات الكادميوم النقية CDWO4 و المشوبة CDWO4 : SI و CDWO4 : NB و المثارة بليزر (HE-CD, 325NM)‎ في مجال درجات الحرارة المنخفضة

الملخص EN

This paper presents The photoluminescence spectra of Cadmium Tungstate undoped CdWO4 : Pure) Crystal and doped Crystals CdWO4:Nb , CdWO4: Si , were excited by radiation Of a He–Cd laser (excitation wavelength 325 nm) at low temperatures between room temperature 300k and 12k studies.

Photoluminescence spectrum in undoped CdWO4 performed at low temperature, showed a Moassociated emission peaking near 680 nm ascribed to transition within complex MoO6 +6.the same effect observed also in CdWO4:Nb Crystal where Niobium ions compete with Tugstate sit.

we have observed a new band emission at 450nm region of the CdWO4: Si crystal at 300k ascribed as formation of killing center suppressing intrinsic emission.