Franz-keldysh effect in emission of electroluminescent ZnS:Cu, Cl films

Vlasenko, N. A.; Khomchenko, V. S.

doi:10.1002/pssa.2210190252

Cited by 8 publications

(3 citation statements)

References 6 publications

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“…In fact, it is known [22,23], that under band-to-band excitation free holes are quickly captured by negatively charged Band G-centers while the emission transition in both cases corresponds to consequent free electron recombination with the captured holes. As it is shown in Ref.…”

Section: Analysis Of B-and G-centers Concentrationmentioning

confidence: 98%

Formation of Cu-related emission centers under thermal doping of ZnS powders with CuCl and CuCl2

Bacherikov

Zhuk

Baran

et al. 2015

Journal of Luminescence

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Section: Analysis Of B-and G-centers Concentrationmentioning

confidence: 98%

Formation of Cu-related emission centers under thermal doping of ZnS powders with CuCl and CuCl2

Bacherikov

Zhuk

Baran

et al. 2015

Journal of Luminescence

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“…The additional argument was obtained from investigation of EL spectra that confirm undelayed recombination. The strong electrical field results in some long-wave shift of ZnS〈Cu,Cl〉 green band due to the Franz-Keldysh effect [22][23][24] (see Fig. 11).…”

Section: A Electroluminescent Display Device Based On Zns〈cuga〉 Filmsmentioning

confidence: 99%

Untitled

2020

Semicond. phys. quantum electron. and optoelectron.

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The review is devoted to the results of studies on the structure, morphology, optical and luminescent properties of thin films doped with the modified Close Space Sublimation method. Using this method, ZnO and ZnS films were doped with impurities of various metals-Ag, Cu, Ga. It has been shown that doping the films leads to an improvement in the crystal structure and radiative properties of films. When using doping with this method, cathodoluminescent screens with high luminance have been manufactured. The screens show more deep green color than C1 and C2 commercial phosphors. The luminance values at 300 K are 200 cd/m 2 for the ZnS〈Cu,Ga〉 film and 1100 cd/m 2 for the ZnO〈Cu, Ga〉 ones. At 77 K, the cathodoluminescence luminance for ZnO〈Cu,Ga〉 film is 3700 cd/m 2 and has not reached the limit value. Doping the ZnO with copper has greatly improved the crystal structure and made it possible to obtain films with white-light emission. Ag doping suppresses the wide visible bands of photoluminescence spectra. The intensity of ultraviolet band is 15-fold increased as compared to their reference non-doped films. The ultraviolet/visible emission ratio reached 20.

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“…The industrial use of activated ZnS for over 70 years stimulated more profound study of its physical characteristics defining a variety of luminescent properties of this material [1][2][3][4][5][6][7]. Nowadays, properties of luminescent centers formed by copper [4][5][6][7][8][9] and other impurities [10][11][12][13] in ZnS have been studied so well that the behavior of impurity atoms in these crystals can be reliably monitored by fluorescent techniques.…”

Section: Introductionmentioning

confidence: 99%

Luminescent properties of fine-dispersed ZnS:Cu prepared using self-propagating high-temperature synthesis

Yu¹,

Lashkaryov²

2014

Semicond. Phys. Quantum Electron. Optoelectron.

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Abstract. Fine-dispersed ZnS doped with Cu was prepared using self-propagating hightemperature synthesis. In the photoluminescence excitation spectra, the blue shift of the host lattice excitation peak is observed for powder ZnS:Cu that contains nano-and mesosized (submicron) particles. The obtained spectra indicate that radiative recombination in meso-sized particles is significantly reduced as compared to micro-sized particles, which can be caused by the increase of non-radiative relaxation processes in surface states.

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Franz-keldysh effect in emission of electroluminescent ZnS:Cu, Cl films

Cited by 8 publications

References 6 publications

Formation of Cu-related emission centers under thermal doping of ZnS powders with CuCl and CuCl2

Formation of Cu-related emission centers under thermal doping of ZnS powders with CuCl and CuCl2

Untitled

Luminescent properties of fine-dispersed ZnS:Cu prepared using self-propagating high-temperature synthesis

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