Research output: Contribution to journal › Article › peer-review
Emission Kinetics of Surface (Bi)Excitons in ZnO Thin Films. / Akopyan, I. Kh; Labzovskaya, M.É.; Novikov, B. V.; Talalaev, V. G.; Tomm, J. W.; Schilling, J.
In: Physics of the Solid State, Vol. 61, No. 3, 01.03.2019, p. 402-407.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Emission Kinetics of Surface (Bi)Excitons in ZnO Thin Films
AU - Akopyan, I. Kh
AU - Labzovskaya, M.É.
AU - Novikov, B. V.
AU - Talalaev, V. G.
AU - Tomm, J. W.
AU - Schilling, J.
PY - 2019/3/1
Y1 - 2019/3/1
N2 - The kinetics of near-edge photoluminescence (PL) in ZnO nanofilms prepared by the atomic layer deposition has been investigated. It is established that the kinetics of near-edge PL in 4-nm films is determined to a great extent by surface 2D-exciton (SX) and biexciton (SXX) complexes. The contribution from surface biexcitons is estimated based on a photostimulated change in the surface potential in ZnO films with different thicknesses. Ultrafast dynamics of surface biexcitons in thin films are revealed. It is shown that biexcitons localized near the surface have the shortest radiative lifetime (less than 100 ps) among all bound exciton complexes, which is explained by the large oscillator strength.
AB - The kinetics of near-edge photoluminescence (PL) in ZnO nanofilms prepared by the atomic layer deposition has been investigated. It is established that the kinetics of near-edge PL in 4-nm films is determined to a great extent by surface 2D-exciton (SX) and biexciton (SXX) complexes. The contribution from surface biexcitons is estimated based on a photostimulated change in the surface potential in ZnO films with different thicknesses. Ultrafast dynamics of surface biexcitons in thin films are revealed. It is shown that biexcitons localized near the surface have the shortest radiative lifetime (less than 100 ps) among all bound exciton complexes, which is explained by the large oscillator strength.
KW - PHOTOLUMINESCENCE
KW - EXCITONS
UR - http://www.scopus.com/inward/record.url?scp=85064893968&partnerID=8YFLogxK
UR - http://www.mendeley.com/research/emission-kinetics-surface-biexcitons-zno-thin-films
U2 - 10.1134/S1063783419030041
DO - 10.1134/S1063783419030041
M3 - Article
AN - SCOPUS:85064893968
VL - 61
SP - 402
EP - 407
JO - Physics of the Solid State
JF - Physics of the Solid State
SN - 1063-7834
IS - 3
ER -
ID: 48583110