Abstract
This paper reports on a study of transient optical absorption and pulsed cathodoluminescence in APb2Cl5 (A = K, Rb) in the visible and ultraviolet spectral regions. The measurements performed by absorption optical spectroscopy with nanosecond time resolution showed the transient optical absorption of APb2Cl5 to derive from optical transitions in hole centers, and that the optical density relaxation kinetics is mediated by interdefect tunneling recombination in complementary pairs which involves Frenkel defects on the cation sublattice and self-trapped carriers. The slow components in the transient optical absorption decay kinetics, with characteristic times ranging from a few ms to seconds, have been assigned to diffusion-mediated annihilation of interstitial atoms with alkali metal vacancies. The mechanisms underlying creation and relaxation of the short-lived Frenkel defects on the cation sublattice and self-trapped carriers have been analyzed.
| Original language | English |
|---|---|
| Pages (from-to) | 1640-1648 |
| Number of pages | 9 |
| Journal | Physics of the Solid State |
| Volume | 51 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 1 Aug 2009 |
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Keywords
- 42.70.Hj
- 61.72.Ji
- 78.47.+p
- 78.60.Hk
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
Cite this
Transient optical absorption and luminescence in APb2Cl5 (A = K, Rb) crystals. / Ogorodnikov, I. N.; Smirnov, A. A.; Pustovarov, V. A.; Isaenko, L. I.; Tarasova, A. Yu; Yakovlev, V. Yu.
In: Physics of the Solid State, Vol. 51, No. 8, 01.08.2009, p. 1640-1648.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Transient optical absorption and luminescence in APb2Cl5 (A = K, Rb) crystals
AU - Ogorodnikov, I. N.
AU - Smirnov, A. A.
AU - Pustovarov, V. A.
AU - Isaenko, L. I.
AU - Tarasova, A. Yu
AU - Yakovlev, V. Yu
PY - 2009/8/1
Y1 - 2009/8/1
N2 - This paper reports on a study of transient optical absorption and pulsed cathodoluminescence in APb2Cl5 (A = K, Rb) in the visible and ultraviolet spectral regions. The measurements performed by absorption optical spectroscopy with nanosecond time resolution showed the transient optical absorption of APb2Cl5 to derive from optical transitions in hole centers, and that the optical density relaxation kinetics is mediated by interdefect tunneling recombination in complementary pairs which involves Frenkel defects on the cation sublattice and self-trapped carriers. The slow components in the transient optical absorption decay kinetics, with characteristic times ranging from a few ms to seconds, have been assigned to diffusion-mediated annihilation of interstitial atoms with alkali metal vacancies. The mechanisms underlying creation and relaxation of the short-lived Frenkel defects on the cation sublattice and self-trapped carriers have been analyzed.
AB - This paper reports on a study of transient optical absorption and pulsed cathodoluminescence in APb2Cl5 (A = K, Rb) in the visible and ultraviolet spectral regions. The measurements performed by absorption optical spectroscopy with nanosecond time resolution showed the transient optical absorption of APb2Cl5 to derive from optical transitions in hole centers, and that the optical density relaxation kinetics is mediated by interdefect tunneling recombination in complementary pairs which involves Frenkel defects on the cation sublattice and self-trapped carriers. The slow components in the transient optical absorption decay kinetics, with characteristic times ranging from a few ms to seconds, have been assigned to diffusion-mediated annihilation of interstitial atoms with alkali metal vacancies. The mechanisms underlying creation and relaxation of the short-lived Frenkel defects on the cation sublattice and self-trapped carriers have been analyzed.
KW - 42.70.Hj
KW - 61.72.Ji
KW - 78.47.+p
KW - 78.60.Hk
UR - http://www.scopus.com/inward/record.url?scp=70349603839&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70349603839&partnerID=8YFLogxK
U2 - 10.1134/S1063783409080204
DO - 10.1134/S1063783409080204
M3 - Article
VL - 51
SP - 1640
EP - 1648
JO - Physics of the Solid State
JF - Physics of the Solid State
SN - 1063-7834
IS - 8
ER -