نویسندگان
1 دانشکده مهندسی پلیمر و رنگ، دانشگاه صنعتی امیر کبیر
2 پژوهشکده مهندسی پلیمر و رنگ، دانشگاه صنعتی امیر کبیر
3 پژوهشکده مهندسی رنگ و پلیمر، دانشگاه صنعتی امیر کبیر
4 پژوهشکده پلیمر و رنگ، دانشگاه صنعتی امیر کبیر
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
Recently, up-conversion UC optical materials have attracted a lot of interest in biomarkers, solar cells, temperature and chemical sensors. They have the ability to convert radiations with lower energy into higher ones via a nonlinear optical process. Three main classes of UC processing mechanisms are: excited state absorption ESA, energy transfer up-conversion ETU and photon avalanche PA. The most common host materials are based on fluorides and oxides. The iones such as Er3 , Tm3 and Ho3 are suitable for activator centers and Yb3 is a popular sensitizer ion in UC process. The main focus of this review will be on the theory of synthesis, surface treatments and applications of UC phosphores as a novel generation of advanced optical materials especially in biology.
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