Green upconversion luminescence from poly-crystalline Yb3+, Er3+ Co-doped CaMoO4

Autor:	Jeong Hoon Lee, Kwang Bo Shim, Jeong Ho Ryu, Tae Hyung Heo, Bong Geun Choi, Jun Ho Chung, Jong Won Eun, Sang Yeop Lee
Rok vydání:	2012
Předmět:	Materials science business.industry Mechanical Engineering Upconversion luminescence Doping Metals and Alloys Analytical chemistry Photon upconversion Optics Mechanics of Materials Materials Chemistry Crystallite business Luminescence Poly crystalline Excitation Co doped
Zdroj:	Journal of Alloys and Compounds. 522:30-34
ISSN:	0925-8388
DOI:	10.1016/j.jallcom.2012.01.059
Popis:	The upconversion (UC) luminescence properties of polycrystalline Er3+/Yb3+ co-doped CaMoO4 synthesized by a complex citrate gel method were investigated in detail. Under 980 nm excitation, Er3+/Yb3+ co-doped CaMoO4 has exhibited a weak red emission near 670 nm and strong green UC emissions at 530 and 550 nm, corresponding to the intra 4f transitions of Er3+ (4F9/2, 2H11/2, 4S3/2) → Er3+ (4I15/2). The optimum doping concentrations of Er3+ and Yb3+ were determined to result in the highest UC luminescence and a possible UC mechanism of Er3+/Yb3+ co-doped CaMoO4 depending on the pump power dependence is discussed in detail.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9b5a6a17919e929e0f3f317d966a981f https://doi.org/10.1016/j.jallcom.2012.01.059 Zobrazit plný text záznamu Full Text from ScienceDirect