Synthesis and Characterization of Highly Efficient Near-Infrared Upconversion Sc3+/Er3+/Yb3+Tridoped NaYF4

Autor:	En Ma, Qingming Huang, Jianchang Yu, Kaiming Lin
Rok vydání:	2010
Předmět:	Diffraction Materials science Infrared Near-infrared spectroscopy Analytical chemistry Laser Photon upconversion Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Ion General Energy X-ray photoelectron spectroscopy law Physical and Theoretical Chemistry Excitation
Zdroj:	The Journal of Physical Chemistry C. 114:4719-4724
ISSN:	1932-7455 1932-7447
Popis:	The blue, green, red, and UV upconversion (UC) emissions of hexagonal NaYF4 were obviously enhanced by tridoping the structure with Sc3+/Er3+/Yb3+. The effect of Sc3+ tridoping on the upconversion luminescence of NaYF4: Er3+/Yb3+ was investigated in detail. The blue, green, and red upconverted emissions corresponding to the excitation of infrared 980-nm light were remarkably enhanced and the decay time was obviously prolonged with different quantity Sc3+ tridoping. X-ray diffraction, X-ray photoelectron spectroscopy, and decay time investigations evidence that Sc3+ ions can tailor the local crystal field of the NaYF4 host lattice, and the energy level 4S3/2 was split. The UC emissive intensity mechanism was discussed based on XRD, XPS, and PL analysis data. This material is expected to be widely applied in biomedical, UC laser, solar energy, etc.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8eba57231d59da79c8b1d00861b1fdd4 https://doi.org/10.1021/jp908645h Zobrazit plný text záznamu