Optical properties of (Ce_xLu_1-x)₃MgAl₃SiO₁₂ yellow phosphor

control of the optical properties of nanoparticles by laser fields

در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...

Investigation of the Optical Properties of YAG:Ce Phosphor

Recently, many studies have used optical ray-tracing analysis to investigate novel concepts of phosphor-converted white LEDs. Even though optical ray-tracing is a convenient tool, the accuracy of the results depends very much on the optical properties of the various components within the package used in the analysis. Presently, light transmission, reflection, and absorption properties of white ...

Structure and optical properties of Lu2SiO5:Ce phosphor thin films

Measurement and numerical studies of optical properties of YAG:Ce phosphor for white light-emitting diode packaging.

The optical properties of YAG:Ce phosphor were measured by a double-integrating-sphere system and calculated by Mie theory and Monte Carlo ray tracing to provide precise optical characterizations of YAG:Ce phosphor for white light-emitting diode (LED) packaging design. Measurement results showed that the phosphor presents strong absorption for blue light, high reflection for yellow light, and a...

Role of Fluxes in Optimizing the Optical Properties of Sr0.95Si2O2N2:0.05Eu2+ Green-Emitting Phosphor

Chlorides of NH₄Cl and SrCl₂ and fluorides of AlF₃ and SrF₂ were added to raw materials acting as the flux for preparing the SrSi₂O₂N₂:Eu2+ phosphor. The effects of the fluxes on the phase formation, particle morphology, particle size, and photoluminescence properties were investigated. The results revealed that particle size, particle morphology and photoluminescence intensity were largely dom...