White-light-emitting properties of SrTiO3:Pr3+ nanoparticles

Wei Tang, Ye Sun, Miao Yu, Xiao Liu, Yongqi Yin, Bin Yang, Limei Zheng, Feng Qin, Zhiguo Zhang, Wenwu Cao

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24 Scopus citations


Single-phase SrTiO3:mPr3+ (m = 0.01-0.1) nanoparticles have been synthesized by a hydrothermal method. Different from reported Pr3+-based phosphors which were all dominated by red emissions, considerably strong and overwhelming blue-green emission centered at 491 nm has been achieved together with minor green and red emissions. The absolute and relative intensities of these emissions can be modified by Pr3+ concentrations and annealing temperatures in a controlled manner, giving rise to varied emission colors. In particular, owing to the appropriate combination of the blue to red emissions, desirable white-light emission has been realized from the as-grown SrTiO3:0.01Pr3+ and the annealed SrTiO3:0.06Pr3+ samples at 350 °C with CIE chromaticity coordinates of (0.33, 0.35) and (0.35, 0.37) and a correlated color temperature of 5601 K and 4883 K, respectively, indicating the promising application potential of SrTiO3:Pr3+ as single-phase phosphors for white light-emitting-diodes. This work may provide a fresh route to acquire white emission from a single-composition phosphor.

Original languageEnglish (US)
Pages (from-to)27491-27495
Number of pages5
JournalRSC Advances
Issue number35
StatePublished - Jan 1 2015

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Chemical Engineering


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