Web3 Nov 2016 · In this paper, a novel afterglow phosphor based on praseodymium ion doped Sr2Ta2O7 was synthesized successfully by solid-state reaction in the ambient atmosphere. The photoluminescence, afterglow, afterglow decay, and thermoluminescence (TL) properties were investigated in detail. The dependence of photoluminescence properties … Web1 Aug 2024 · The luminescent patterns can make a difference as the change of concentration and time, forming a dynamic anti-counterfeiting mark that distinguishes in …
Effects of activated Sr - Wiley Online Library
Web3 Nov 2016 · C. Luminescence properties of Pr 3+-doped Sr 2 Ta 2 O 7 As an example, the PLE and PL spectra of Sr 2 Ta 2 O 7 :0.01Pr 3+ are presented in Fig. 5 . The PLE spectra exhibit a broad band ranging from 200 to 300 nm peak at 260 nm which is attributed to the 4 f –5 d transition of Pr 3+ when monitoring emission at 486 nm. csapp3e pdf
Electronic and optical properties of Cs2NaInCl6 a, GW
Web28 Oct 2016 · Surface modification of the Sr 2 MgSi 2 O 7: Eu 2+, Dy 3+ phosphors by SiO 2 coating is an effective way to improve photoluminescence intensity and thermostability of the Sr 2 MgSi 2 O 7: Eu 2+, Dy 3+ phosphors. Graphical Abstract Emission spectra of uncoated and SiO 2 -coated phosphors under 365 nm excitation 1 Introduction Web28 Aug 2024 · Normally, luminescence is divided into two categories, fluorescence and phosphorescence, depending on the nature of the excited state. Fluorescence is the emission of electromagnetic radiation light by a substance that has absorbed radiation of a different wavelength. Phosphorescence is a specific type of photoluminescence related to … Web2. Advantages of Luminescence Measurement Luminometry, the analytical technique used to measure chemi- and bioluminescent reactions, has several advantages over other analytical techniques. Extraordinary sensitivity; a wide dynamic range; inexpensive instrumentation; and the emergence of novel luminescent assays make this technique … marcelle schaffarczyk