Growth and characterisation of Zn1−xBexSe mixed crystals

Firszt, F.; ŁĻgowski, S.; Μęczyńska, H.; Szatkowski, J.; Paszkowicz, W.; Godwod, K.

doi:10.1016/s0022-0248(98)80277-7

Cited by 54 publications

(34 citation statements)

References 10 publications

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“…The lattice constant decreases linearly with x [3]. The applied growth conditions and further annealing in zinc vapour are observed as having a strong influence on structural, mechanical and optical properties of the crystals.…”

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confidence: 92%

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Optical and Structural Properties of Zn_1-xBe_xSe Mixed Crystals

et al. 1998

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Optical and structural properties of Ζn 1 -x Bex Se bulk crystals in the range of composition 0 _ < x < 0.41 have been studied. These crystals were grown by Bridgman method under an argon overpressure. Transmission, absorption, photoluminescence and photoacoustic spectra as a function of composition were investigated. It has been found that the crystal structure is of sphalerite type. The crystal quality increases when the crystallization process of the same boule is performed more than once. In the investigated composition range the lattice constant decreases and the energy gap increases with increasing beryllium content. From photoluminescence measurements the excitonic energy gap about 3.64 eV at 40 K was estimated for the highest obtained Be concentration (x = 0.41).PACS numbers: 78.55. Et, 62.65.+k Mixed crystals of wide gap Il-VI compounds with Be chalcogenides are of particular interest because of their potential applications in constructing visible and UV lasers. The Zn1-xBexSe has a much higher degree of covalent bonding as compared to other (more ionic) wide gap II-VI compounds which modifies its mechanical properties [1]. This is expected to result in considerable lattice rigidity, a very important factor for reducing defects migration and multiplication. Until now, the published papers were concerned in thin films [2] but the fundamental properties of mixed Ζn 1 -x BeSe bulk crystals remain unknown for the wide range of composition. Some preliminary results for 0 < x < 0.17 have been recently published in Ref. [3].Zn 1 -x Bex Se crystals were grown by Bridgman method under an argon overpressure in the range of composition 0 < x < 0.41 using a powder mixture of (309)

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confidence: 92%

“…Some preliminary results for 0 < x < 0.17 have been recently published in Ref. [3].Zn 1 -x Bex Se crystals were grown by Bridgman method under an argon overpressure in the range of composition 0 < x < 0.41 using a powder mixture of (309) …”

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Optical and Structural Properties of Zn_1-xBe_xSe Mixed Crystals

et al. 1998

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“…The Zn 1-x-y Be x Mn y Se crystals were grown from the melt by the high pressure high temperature Bridgman method [23]. Next, the samples were cut into the plates of the thickness l = 0.13 cm and mechanically grinded, polished, and chemi− cally etched in NaOH water solution.…”

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Photoacoustic method of determination of quantum efficiency of luminescence in Mn2+ ions in Zn1−x−yBexMnySe crystals

Maliński

Chrobák

Zakrzewski

et al. 2011

Opto-Electronics Review

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This paper presents step by step the procedure of determination of the quantum efficiency of luminescence of Mn2+ ions in the Zn1−x−yBexMnySe crystals. The method is based on the photoacoustic spectroscopy approach. In the paper, the experimental spectra of absorbance, transmission, absorption and photoacoustic spectra of the samples are presented and analyzed from the point of view of the possibility of determination of the quantum efficiency of Mn2+ ion luminescence at room temperature. It was determined experimentally that in the investigated crystals the quantum efficiency of luminescence in the Mn2+ ions is about 35%, 40%, 32% for the absorption peaks at 430 nm, 470 nm, and 510 nm, respectively, for Zn0.75Be0.2Mn0.05Se crystal.

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“…The ZnSe:Co crystals were grown from melt by the high pressure high temperature Bridgman method [15]. Next, the samples were cut into plates of the thickness of l = 0.13 cm and mechanically ground, polished, and chemically etched in a NaOH water solution.…”

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confidence: 99%

Energy efficiency of near infrared cobalt luminscence in ZnSe:Co determined by a photoacoustic method

Chrobák

Maliński

Strzałkowski

et al. 2012

Opto-Electronics Review

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The paper presents results of computations of the energy efficiency of the cobalt luminescence in ZnSe:Co determined by the photoacoustic method. The transmission spectra, photoacoustic experimental and theoretical spectra, and the frequency dependence on the photoacoustic amplitude characteristics are presented. From them, the energy efficiency of Co2+ the near infrared luminescence (3200 nm) was computed in the frame of new proposed photoacoustic model of computations of the luminescence energy efficiency.

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Growth and characterisation of Zn1−xBexSe mixed crystals

Cited by 54 publications

References 10 publications

Optical and Structural Properties of Zn_1-xBe_xSe Mixed Crystals

Optical and Structural Properties of Zn_1-xBe_xSe Mixed Crystals

Photoacoustic method of determination of quantum efficiency of luminescence in Mn2+ ions in Zn1−x−yBexMnySe crystals

Energy efficiency of near infrared cobalt luminscence in ZnSe:Co determined by a photoacoustic method

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Growth and characterisation of Zn1−xBexSe mixed crystals

Cited by 54 publications

References 10 publications

Optical and Structural Properties of Zn1-xBexSe Mixed Crystals

Optical and Structural Properties of Zn1-xBexSe Mixed Crystals

Photoacoustic method of determination of quantum efficiency of luminescence in Mn2+ ions in Zn1−x−yBexMnySe crystals

Energy efficiency of near infrared cobalt luminscence in ZnSe:Co determined by a photoacoustic method

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Optical and Structural Properties of Zn_1-xBe_xSe Mixed Crystals

Optical and Structural Properties of Zn_1-xBe_xSe Mixed Crystals