Spectroscopy of Mn4+ in orthorhombic perovskite, LaInO3
- GE Global Research, Niskayuna, NY (United States)
- Chongqing Univ. of Posts and Telecommunications, Chongqing (People's Republic of China); Univ. of Tartu, Tartu (Estonia); Jan Dlugosz Univ., Czestochowa (Poland)
- Current & Lighting, Current Powered by GE, Cleveland, OH (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
The low temperature spectroscopic properties of Mn4+ (3d3) in the orthorhombic perovskite, LaInO3, is examined in this work. The exchange charge model of crystal-field theory is used to calculate the Mn4+ energy levels. The spectra can be fitted by the parameters Dq = 1776 cm–1, B = 700 cm–1 and C = 3189 cm–1, with C/B = 4.5. Discussions pertaining to the low luminescence efficiency of LaInO3:Mn4+ are presented. A comparative study of the variations in the energy of the 2Eg → 4A2g emission transition in a series of materials with the perovskite structure is presented. Here, the data suggest a relationship between the energy of the 2Eg → 4A2g emission transition and the deviation of the octahedral O-Mn-O bond angle from the ideal 90°. It is concluded that the angular distortion is not large enough to support the development of high luminosity Mn4+ activated phosphors in the ABO3 perovskite family of materials.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- Grant/Contract Number:
- AC52-07NA27344; PUT PRG111; GDW20145200225; TK141
- OSTI ID:
- 1569172
- Alternate ID(s):
- OSTI ID: 1775957
- Report Number(s):
- LLNL-JRNL-775999; 968485
- Journal Information:
- Journal of Luminescence, Vol. 206, Issue C; ISSN 0022-2313
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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