Optimization of BaMgAl<sub>10</sub>O<sub>17</sub>:Eu<sup>2+</sup> phosphors by the substitution of Si-N bonds for Al-O bonds |
| |
Authors: | WANG YiFei XU Xin QIN Han YIN Liangjun HAO Luyuan |
| |
Affiliation: | (Laboratory of Materials for Energy Conversion,Department of Materials Science and Engineering,University of Science and Technology of China,Hefei 230026,China) |
| |
Abstract: | We proposed a simple method to improve the thermal stability of BaMgAl10O17:Eu2+(BAM) phosphors by the substitution of Si-N bonds for Al-O bonds in the host lattice.Both photoluminescence properties and thermal stability under ultraviolet(UV) and vacuum ultraviolet(VUV) excitation could be significantly improved through Si-N incorporation.After thermal degradation at 600 °C for 1 h in air atmosphere,the Si-N doped sample(Ba0.88Eu0.12MgAl9.97Si0.03O16.97N0.03) had the highest emission intensity which was 22% and 40% stronger than that of as-received sample under UV and VUV excitation,respectively.This could be attributed to the stable local structure surrounding the Eu2+ ions and the lower electronegativity of nitrogen. |
| |
Keywords: | BaMgAl10O17:Eu2+ phosphor thermal stability photoluminescence rare earths |
本文献已被 维普 等数据库收录! |