2022   04   en   p.57-60 R.М. Мamedov,
Luminescence and photoconductivity of CdS upon multiphoton excitation		  pdf 

ABSTRACT

The luminescence and kinetics of photocurrent relaxation in thin CdS films upon excitation by light from a Nd:YAG laser were studied experimentally. Comparison of the luminescence spectra under single-photon excitation with the spectra under two- and three-photon excitation showed that there is no free exciton line in the luminescence spectrum under bulk excitation. The effect of impurities on the luminescence spectra and photocurrent relaxation curves upon excitation by the 1st-3rd laser harmonics is studied.

Keywords: CdS, photocurrent relaxation, multiphoton absorption, luminescence.
PACS: 78.20.−e; 78.40.−q

DOI:-

Received: 05.12.2022

AUTHORS & AFFILIATIONS

Baku State University, Baku, Azerbaijan, AZ1148, st. Z. Khalilova 23
E-mail: rovshan63@rambler.ru 		REFERENCIES

[1]   Maleki M. Ghamsari M.S., Mirdamadi Sh., Ghasemzadeh, R.A Facile Route for Preparation of CdS Nanoparticles. Semicond. Phys. Quant. El. and Optoel. 10, 2007. 30.
[2]   H.V. Demir, N. Sedat, M. Evren et al. Tuning shades of white light with multi-color quantum-dot-quantum-well emitters based on onion-like CdSe-ZnS heteronanocrystals. Nanotechnology. 19(33), 2008. 335203.
[3]   D.K. Zharkov, G.M. Safiullin, V.G. Nikiforov et al. Synthesis and photophysical properties of CdS nanocomposites. Sc. app. Kazan. state university Ser. Phys.-Math. science. 155(1), 2013. 66.
[4]   A.V. Leontiev, D.K. Zharkov, A.G. Shmelev, V.S. Lobkov, V.V. Samartsev. Ultrafast relaxation of photoexcited charge carriers in cadmium sulfide. Proceedings of the Russian Academy of Sciences. Physical series. 83(1), 2019. 122.
[5]   M.A. Jafarov, R.F. Mekhtiev, S.A. Mamedova, E.F. Nasirov. Investigation of growth features and electrophysical properties of telluride and cadmium sulfide films. BSU News, 3, 2011. 146.
[6]   Fam Thi Khai Myen, V.G. Klyuev, Nguyen Thi Kim Chung. Optical properties of cadmium sulfide nanocrystals obtained by the sol-gel method. Condensed media and interphase boundaries. 13(4) (2011) 515.
[7]   F.N. Radwan, K.J. Carroll, E.E. Carpenter. Dual mode nanoparticles: CdS coated iron nanoparticles. Journal of Applied physics. 107, 2010. 09B515.
[8]   C. Santiago Tepantlan. Structural, optical and electrical properties of CdS thin films obtained by spray pyrolysis. Revista Mexicana de Fisica. 54(2), 2008. 112-117.
[9]   V.M. Salmanov, A.G. Huseynov, M.A. Jafarov, R.M. Mamedov, T.A. Mammadov. Peculiarities of photoconductivity and luminescence of thin CdS films and Cd1-xZnxS solid solutions under laser excitation. Optics and spectroscopy, 130(10), 2022. 1567.
[10]  L.N. Kurbatov, I.M. Ovchinnikov, N.V. Soroko-Novitsky. Kinetics of gallium monoselenide cathodoluminescence. FTP. 14(4), 1980. 802.
[11]  I.K. Kristensen. Decay of Photoluminescence in GaSe. Physica status solidi (a), 62 (1980) K1 81.
[12]  T. Kushida, F. Minami, Y. Oka, Y. Nakazaki, Y. Tanaka. Edge emission in GaSe and GaS. Nuovo Cimento B. 39, 1977. 650.
[13]  Moshe Evenor, Shimshon Gottesfeld, Zvi Harzion, Dan Huppert, Stephen W. Feldberg. Time-resolved photoluminescence in the picosecond time domain from CdS crystals immersed in electrolytes. J. Phys. Chem. 88(25), 1984. 6213.
[14]  J.Z. Zhang, R.H. O’Neil, and T.W. Robertihh. Femtosecond studies of interfacial electron‐hole recombination in aqueous CdS colloids. Appl. Phys. Lett. 64, 1994. 1989; https://doi.org/10.1063/1.111986.
[15]  V.M. Asnin, A.A. Rogachev. Mott transition in the system of excitons in germanium. FTT. 20, 1967. 755.