Skip to main content Accessibility help
×
Home

Photoluminescence spectra of undoped and Sm3+-doped BaAl2S4 and BaAl2Se4 single crystals

  • Moon-Seog Jin (a1), Choong-Il Lee (a2), Chang-Sun Yoon (a3), Chang-Dae Kim (a4), Jae-Mo Goh (a5) and Wha-Tek Kim (a5)...

Abstract

Undoped and Sm3+-doped BaAl2S4 and BaAl2Se4 single crystals were grown by the chemical transport reaction method. The optical energy band gaps of the BaAl2S4 and BaAl2Se4 were found to be 4.10 and 3.47 eV, respectively, at 5 K. In their photoluminescence spectra measured at 5 K, broad emission peaks at 459 and 601 nm appeared in the BaAl2S4 and at 486 and 652 nm in the BaAl2Se4. These emissions are assigned to donor–acceptor pair recombinations. Sharp emission peaks were observed in the Sm3+-doped BaAl2S4 and BaAl2Se4 single crystals at 5 K. Taking into account the ionic radii of the cations and Sm3+, these sharp emission peaks are attributed to the electron transitions between the energy levels of Sm3+ substituting with the Ba site.

Copyright

References

Hide All
1.Carlsson, A.E. and Wilkins, I.W., Phys. Rev. B 29, 5836 (1984).
2.Bube, R.H., Photoconductivity of Solids (John Wiley and Sons, New York, 1960), p. 233.
3.Eisenmann, B., Jakowski, M., and Schäfer, H., Mater. Res. Bull. 17, 1169 (1982).
4.Klee, W. and Schäfer, H., Z. Anorg. Allg. Chem. 479, 125 (1981).
5.Donohue, P.C. and Hanlon, J.E., J. Electrochem. Soc. 121, 137 (1974).
6.Lethi, K.T., Garcia, A., Guillen, F., and Fouassier, C., Mater. Sci. Eng., B 14, 393 (1992).
7.Pankove, J.I., Optical processes in semiconductors (Dover, New York, 1971), Chapter 3.
8.Micocci, G., Rizzo, A., and Tepore, A., J. Appl. Phys. 54, 1924 (1963).
9.Song, H.J., Yun, S.H., and Kim, W.T., Solid State Commun. 94, 225 (1995).
10.Bube, R.H., Photoconductivity of Solids (John Wiley and Sons, New York, 1960), pp. 160, 171.
11.Daams, J.L.C., Villars, P., and van Vucht, J.H.N., Atals of Crystal Structure Types for Intermetallic Phases (The Materials Information Society, OH, 1991).
12.Koster, G.F., Dimmack, J.O., Wheeler, R.G., and Statg, H., Properties of 32 point groups (MIT, Cambridge, MA, 1963).
13.Dieke, G.H., Spectra and Energy Levels of Rare Earth Ions in Crystals (John Wiley & Sons, New York, 1968).

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed