Upconversion white-light emitting of Tm{sup 3+} and Er{sup 3+} codoped oxyfluoride and its achieving mechanism

Journal Article · Wed Jul 01 04:00:00 EDT 2009 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2009.01.024· OSTI ID:22029811

Zhizhou, Yu; Qibin, Yang; Changfu, Xu ^[1]

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1. Institute of Modern Physics, Xiangtan University, Xiangtan 411105 (China)

Tm{sup 3+} and Er{sup 3+} codoped oxyfluoride samples were synthesized by high temperature solid-state reaction. Intense upconversion white light of Tm{sup 3+} and Er{sup 3+} codoped oxyfluoride was observed under the excitation of a 980-nm infrared laser diode, which was composed of three primary colors, i.e., blue (from Tm{sup 3+}), green (from Er{sup 3+}), and red emissions (from Tm{sup 3+} and Er{sup 3+}). The optimal white upconversion light, which is close to the standard achromatic point, was achieved firstly by phase transition from PbO to PbO{sub 2}. The scanning electron microscopy, X-ray diffraction and Commission Internationale d'Eclairage chromaticity analysis revealed the dependence of the white upconversion light both on microstructure and Er{sup 3+} content. The sample with white upconversion light close to the standard achromatic point has potential applications in the fields of the three-dimensional solid-state display and multicolor backlight.

• OSTI ID: 22029811
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 7 Vol. 44; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ERBIUM IONS
EXCITATION
LASERS
LEAD OXIDES
LUMINESCENCE
MICROSTRUCTURE
OXYFLUORIDES
PHASE TRANSFORMATIONS
SCANNING ELECTRON MICROSCOPY
SOLIDS
THULIUM IONS
X-RAY DIFFRACTION