Photoluminescence Study of Up-Conversion Phosphor La 2 (MoO 4 ) 3 Yb 3+ , Er 3+ Prepared by Precipitation Method

Indian Journal of Pure & Applied Physics

article

Kevil Shah¹  Sohan M Chauhan¹  B S Chakrabarty¹ 

[1] Luminescence Lab, Applied Physics Department, Faculty of Technology & Engineering, The Maharaja Sayajirao University of Baroda

关键词: Up-conversion process;    Phosphor;    Photoluminescence;    Precipitation;    Chromaticity;    Up-conversion mechanism;    Energy transitions;    Article;   

来源: National Institute of Science Communication and Information Resources

【 摘 要 】

Up-conversion phosphors of La2(MoO4)3: Yb3+, Er3+ with different concentration of Erbium were prepared by a simple precipitation method. The crystal structure, surface morphology, elemental composition and photoluminescence properties were characterized by X–ray powder diffraction (XRD), Scanning electron microscopy (SEM), Energy dispersive X–ray Spectroscopy (EDAX) and Photoluminescence spectroscopy respectively. XRD spectra show high degree of crystallinity in all samples. SEM images shows rod like structures presence in the samples. EDAX analysis confirm the presence of dopants (Yb3+ and Er3+) in the host matrix (La2(MoO4)3). Upon excitation by 980 nm infrared radiation, all the samples give emission peaks between 524 – 533 nm in the bluish green region, 546 – 555 nm in the green region and 659 – 672 nm in the red region which are attributed to the 2H11/2 → 4I15/2, 4S3/2 → 4I15/2 and 4F9/2 → 4I15/2 transitions of Er3+ ions respectively.

【 授权许可】

Unknown