Details

Autor(en) / Beteiligte

• Chen, Lei
• Semiconductor and Optoelectronic Technology Engineering Research Center of Anhui Province, Wuhu 241000
• Luo, An-Qi
• Zhang, Yao
• Chen, Xin-Hui
• Liu, Hao
• Jiang, Yang
• Chen, Shi-Fu
• Chen, Kuo-Ju
• Kuo, Hao-Chung
• Tao, Ye
• Zhang, Guo-Bin

Titel

The site-selective excitation and the dynamical electron–lattice interaction on the luminescence of YBO₃: Sb

Ist Teil von

• Journal of solid state chemistry, 2013-05, Vol.201

Ort / Verlag

United States

Erscheinungsjahr

2013

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The phosphor of YBO₃: Sb³⁺ was synthesized by solid state reaction. Its crystal structure was examined by using X-ray diffraction analysis. The morphology and particle size were characterized with a scanning electron microscopy. The properties of YBO₃: Sb³⁺ luminescence was systematically studied by exciting borate host, the ¹P₁ and ³P₁ levels of Sb³⁺ at the Cᵢ and C₁ sites with 168, 203, 218, 252 and 262 nm, respectively, measured on the synchrotron radiation instruments. The different configurations of emission spectra excited with variant wavelengths show the character of wavelength-selective excitation, which was attributed to different occupations of the Sb³⁺ site in the YBO₃ crystal lattice. Moreover, strong electron–lattice interaction (i.e., the Jahn–Teller effect) between Sb³⁺ and YBO₃ host was discriminated by comparing low temperature and room temperature spectra. The site-selective luminescence was confirmed by YBO₃ activated with multiple Sb³⁺concentrations. The spectral assignment was verified with fluorescence lifetime achieved by using the Time-Correlated Single-Photon Counting method. - Graphical abstract: The dynamical Jahn–Teller effect (electron–lattice interaction) between Sb³⁺ and YBO₃ host was revealed from hyperfine structure in excitation spectra measured on the synchrotron radiation instruments combined with cryogenic technique. Highlights: • The site-selective excitation of YBO₃: Sb³⁺ was demonstrated. • The temperature-dependent luminescence of YBO₃: Sb³⁺ was observed. • Strong electron–lattice interaction between the Sb³⁺and YBO₃ host was revealed. • Superposition of the Jahn–Teller effect and site-selective excitation was discriminated. • Optical parameters were calculated by using a molecular orbital approximation.