7 Questions 26 Answers 0 Followers
Questions related from Yongchao Jia
Dear all, I conducted a rietveld refinement of silicate compound. The R_p and R_wp is around 5%, which I assume that is reasonable. However, for the atomic displacement parameter of oxygen atom,...
07 July 2022 2,799 0 View
Speaking about the rare-earth activated phosphor, we can think that we introduce some localized state (4f and 5d) state in the energy scheme of semiconductor. At present, I have confused the...
25 August 2015 1,975 15 View
Dear all, In an-initio calculation of Lu based compounds, such as LuSF, Lu2O3 and LuAG, should we consider the "DFT +U" method for Lu4f state? Best wishes, Yongchao
10 April 2015 1,517 9 View
I am trying to describe the 4f and 5d energy level of Eu2+(Ce3+) ions in the compounds. In my work, I have a problem about the 4f state of Eu2+(Ce3+). The usual way to localize the 4f state in the...
19 November 2014 7,001 9 View
Normally, when we talk about the thermal quenching mechanism of the luminescence of the 5d energy level, two main ways are usually considered: 1. the 5d electron goes back to the 4f groud state...
10 June 2014 8,142 0 View
Generally, we think that the 4fn level energies are determined by interaction within lanthanide ion, which will be not much influenced by the crystal field due to the shielding effect by 5s and 5p...
28 April 2014 4,158 8 View
For Ce3+-doped scintillators, the Ce4+ model is widely used in the explanation of enhancement effect of M2+ (Ca2+,Mg2+,Zn2+) ions....
01 January 1970 6,472 15 View
