Size dependent optical temperature sensing properties of Y2O3: Tb3+, Eu3+ nanophosphors
نویسندگان
چکیده
منابع مشابه
Optically stable biocompatible flame-made SiO2-coated Y2O3:Tb3+ nanophosphors for cell imaging.
Nanophosphors are light-emitting materials with stable optical properties that represent promising tools for bioimaging. The synthesis of nanophosphors, and thus the control of their surface properties, is, however, challenging. Here, flame aerosol technology is exploited to generate Tb-activated Y(2)O(3) nanophosphors (∼25 nm) encapsulated in situ by a nanothin amorphous inert SiO(2) film. The...
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Terbium doped Y2O3 planar waveguides were fabricated by sol–gel process and dip-coating using yttrium acetate as precursor. Two different doping modes were compared, i.e. introduction in the sol of dispersed Tb3+ions from dissolved Tb(NO3)3, or of nanoparticles of Tb2O3 or [Y2O3:50% Tb] from an alcoholic suspension. The chemical and nanostructural properties were analyzed by infrared spectrosco...
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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...
15 صفحه اولSynthesis and luminescent properties of uniform monodisperse LuPO4:Eu3+/Tb3+ hollow microspheres
Uniform monodisperse LuPO4:Eu3+/Tb3+ hollow microspheres with diameters of about 2.4 µm have been successfully synthesized by the combination of a facile homogeneous precipitation approach, an ion-exchange process and a calcination process. The possible formation mechanism for the hollow microspheres was presented. Furthermore, the luminescence properties revealed that the LuPO4:Eu3+ and LuPO4:...
متن کاملOrganic–Inorganic Eu3+/Tb3+ codoped hybrid films for temperature mapping in integrated circuits
The continuous decrease on the geometric size of electronic devices and integrated circuits generates higher local power densities and localized heating problems that cannot be characterized by conventional thermographic techniques. Here, a self-referencing intensity-based molecular thermometer involving a di-ureasil organic-inorganic hybrid thin film co-doped with Eu(3+) and Tb(3+) tris (β-dik...
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ژورنال
عنوان ژورنال: RSC Advances
سال: 2019
ISSN: 2046-2069
DOI: 10.1039/c8ra10066g