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journal article·2017-02-01Open access

Niobium-oxygen octahedra and oxygen interstitial defect emissions in calcium niobate matrix and its color manipulation via doping Pr3+

Chen Wu, Yezhou Li, Hongxia Gong, Jianping Gao, Zhaofeng Wang

AIP Advances· Volume 7· Issue 2
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Source abstract

Abstract

The luminescent properties of Ca2Nb2O7 matrix and Ca2Nb2O7: Pr3+ were studied in this work. In addition to the emission band from NbO6 octahedra, the orange-red emission aroused by oxygen interstitial defects was observed in Ca2Nb2O7. When Pr3+ was introduced, both of the matrix emission and the characteristic Pr3+ luminescence could appear simultaneously under suitable excitation wavelength. By further adjusting the doping concentration, color manipulation from blue-green to pink and red could be realized in Ca2Nb2O7: Pr3+. In particular, a warm white light could be achieved when doping 0.1% Pr3+. Based on the luminescent results, the underlying mechanisms were discussed and proposed. The color manipulation results suggest that Ca2Nb2O7: Pr3+ is promising for various fields related to lighting, displaying, and imaging.
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Research context

OpenAlex topics: Luminescence Properties of Advanced Materials · Ferroelectric and Piezoelectric Materials · Microwave Dielectric Ceramics Synthesis

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Gansu University of Chinese Medicine 1 School of Information Science & Engineering, , Lanzhou 730000, China

Lanzhou University 2 Department of Materials Science, School of Physical Science and Technology, , Lanzhou 730000, China

Gansu University of Chinese Medicine 3 Province Key Laboratory for Molecular Medicine of Major Diseases and Prevention and Treatment with Traditional Chinese Medicine of Gansu Colleges and Universities, , Lanzhou 730000, China

Chinese Academy of Sciences 4 State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, , Lanzhou, Gansu 730000, China

Funding

CAS Pioneer Hundred Talents Program · Gansu University of Chinese Medicine

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