Результаты исследований: Публикации в книгах, отчётах, сборниках, трудах конференций › статья в сборнике материалов конференции › научная › Рецензирование
Luminescence spectroscopy of Rb2KTiOF5 oxyfluoride single crystals. / Kozlov, A. V.; Pustovarov, V. A.; Sarychev, M. N. и др.
Physics, Technologies and Innovation, PTI 2017: Proceedings of the IV International Young Researchers' Conference. ред. / AA Valeeva; VA Volkovich. Том 1886 American Institute of Physics Inc., 2017. 020012 (AIP Conference Proceedings; Том 1886).Результаты исследований: Публикации в книгах, отчётах, сборниках, трудах конференций › статья в сборнике материалов конференции › научная › Рецензирование
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TY - GEN
T1 - Luminescence spectroscopy of Rb2KTiOF5 oxyfluoride single crystals
AU - Kozlov, A. V.
AU - Pustovarov, V. A.
AU - Sarychev, M. N.
AU - Isaenko, L. I.
PY - 2017/9/26
Y1 - 2017/9/26
N2 - Spectra of photoluminescence (PL) and X-ray excited luminescence (XRL) in region of 1.5-5.5 eV, PL excitation spectra using synchrotron radiation (3.7-22 eV), time-resolved impulse cathode-luminescence (ICL) spectra, the temperature depending of the XRL, decay kinetics as well as thermoluminescence curves were measured for single crystals Rb2KTiOF5, a promising nonlinear optical material. Single crystals are transparent in microwave, visible and near UV range, inter-band transition energy is Eg = 4.2 eV. Crystalline structure has two disordered mixed position O/F, phase transition in the region of 215 K. All the obtained results indicate that in luminescence spectra nonelementary band 2.2 eV is connected to the emission of self-trapped excitons. Nonelementary band 2.2 eV associated with the presence local distortion in the octahedron TiOF5. It is observed that at interband excitation in VUV region at energies more than 3.5 Eg the effect of multiplication of electronic excitations appears. That determines the high output of XRL and ICL. Luminescence methods of quality control of grown crystals are proposed.
AB - Spectra of photoluminescence (PL) and X-ray excited luminescence (XRL) in region of 1.5-5.5 eV, PL excitation spectra using synchrotron radiation (3.7-22 eV), time-resolved impulse cathode-luminescence (ICL) spectra, the temperature depending of the XRL, decay kinetics as well as thermoluminescence curves were measured for single crystals Rb2KTiOF5, a promising nonlinear optical material. Single crystals are transparent in microwave, visible and near UV range, inter-band transition energy is Eg = 4.2 eV. Crystalline structure has two disordered mixed position O/F, phase transition in the region of 215 K. All the obtained results indicate that in luminescence spectra nonelementary band 2.2 eV is connected to the emission of self-trapped excitons. Nonelementary band 2.2 eV associated with the presence local distortion in the octahedron TiOF5. It is observed that at interband excitation in VUV region at energies more than 3.5 Eg the effect of multiplication of electronic excitations appears. That determines the high output of XRL and ICL. Luminescence methods of quality control of grown crystals are proposed.
UR - http://www.scopus.com/inward/record.url?scp=85031116787&partnerID=8YFLogxK
U2 - 10.1063/1.5002909
DO - 10.1063/1.5002909
M3 - Conference contribution
AN - SCOPUS:85031116787
VL - 1886
T3 - AIP Conference Proceedings
BT - Physics, Technologies and Innovation, PTI 2017
A2 - Valeeva, AA
A2 - Volkovich, VA
PB - American Institute of Physics Inc.
T2 - 4th International Young Researchers' Conference: Physics, Technologies and Innovation, PTI 2017
Y2 - 15 May 2017 through 19 May 2017
ER -
ID: 9893463