Enhanced photoluminescence due to Bi3+ → Eu3+ energy transfer and re-precipitation of RE doped homogeneous sized Y2O3 nanophosphors. (November 2016)

• Record Type: Journal Article
• Authors: Jadhav, Abhijit P.; Thi Dinh, Thuy Duong; Khan, Sovann; Lee, Seung Yong; Park, Jong-Ku; Park, Sung Wook; Oh, Ju Hyun; Moon, Byung Kee; Jang, Kiwan; Yi, Soung Soo; Kim, Jung Hwan; Cho, So-Hye; Jeong, Jung Hyun
• Is Part Of: Materials research bulletin. Volume 83(2016)
• Page Start: 186
• Page End: 192
• Publication Date: 2016-11
• Subjects: Optical materials -- Chemical synthesis -- Phosphors -- Luminescence -- Nanostructures; Materials -- Periodicals; Crystal growth -- Periodicals; Matériaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Crystal growth; Materials; Periodicals; 620.11
• DOI: 10.1016/j.materresbull.2016.06.016
• Languages: English
• ISSNs: 0025-5408

Abstract

Graphical abstract: Highlights: Successful re-precipitation of supernatant solution to obtain phase pure nanophosphors. Fine tuning emission wavelength by adding dopant during re-precipitation reaction. Efficient luminescence enhancement with Bi 3+ → Eu 3+ energy transfer. Abstract: Precipitation and re-precipitation of metal ions has been carried out from original and supernatant solution producing Bi 3+ – Eu 3+ doped Y2 O3 :Eu 3+ and Eu 3+ /Tb 3+ doped Y2 O3, respectively. Shorter reaction time is unable to consume all metal ions present in the solution which can be utilized through re-precipitation process. The doping of Bi 3+ – Eu 3+ in Y2 O3 helps to absorb maximum UV light. The activation of Y2 O3 matrix by Bi 3+ and Eu 3+ ions, together and separately, were studied considering the excitation energy transfer to the luminescence centers. The successful replacement of Y 3+ by RE 3+ ions can help for fine tuning of emission wavelength. Re-precipitation of supernatant solution by adding terbium precursor can successively produce uniform sized Tb 3+ doped Y2 O3 :Eu 3+ . The re-precipitation of the supernatant solution ensures maximum consumption of metal ions for higher product yield and possible fine tuning of emission wavelengths.