Optical and photoelectric properties of monoclinic Zn1 − x Cd x As2 crystals

Morozova, V. A.; Маренкин, С. Ф.; Koshelev, O. G.; Chernoguzov, D. V.; Mikhailov, S. G.; Molchanov, A. V.

doi:10.1134/s0020168507030016

Cited by 3 publications

(4 citation statements)

References 7 publications

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“…1, 2, segments ab, bc) and the distinct breaks (a-c), which shift to higher photon energies as the temperature decreases, with a temperature coefficient of -5.6 × 10 -4 eV/K (similar to the temperature variation of ε g in CdAs 2 and Cd 1 -x Zn x As 2 [6]). Similar PC behavior was exhibited by n-ZnAs 2 crystals donordoped with tellurium [8]: all of the acceptors in those crystals were compensated by tellurium, and their PC Cd i + Cd i 2+ V As + Zn As -Cd i + Cd i 2+ Zn As -spectra showed well-defined breaks and regions of exponential rise in PC signal, attesting to electron transitions from deep acceptor levels to the conduction band.…”

Section: Resultsmentioning

confidence: 71%

“…In CdAs 2 , this break occurs at hν = 0.85 eV. The shift of break c to higher photon energies by 5 and 15 meV in the spectra of Cd 1 − x Zn x As 2 with x = 0.03 and 0.06, respectively, reflects the variation of ε g with x [6].…”

Section: Resultsmentioning

confidence: 90%

“…The 300-K band gap of Cd 1x Zn x As 2 is ε g = 1.000 eV at x = 0.03 and 1.009 eV at x = 0.06 [6]. The ionization energies of the acceptors in question are then ε (1-2)a = 0.240 and 0.340 eV at x = 0.03 and ε (1-2)a = 0.239 and 0.339 eV at x = 0.06.…”

Section: Resultsmentioning

confidence: 96%

“…Therefore, the ε g of Cd 1 -x Zn x As 2 solid solution with x = 0.03 and 0.06 is larger than that of CdAs 2 by 5 and 14 meV, respectively [6].…”

Section: Introductionmentioning

confidence: 84%

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Structural Defects in Cd1 − x Zn x As2 Solid Solutions

et al. 2005

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The impurity photoconductivity spectra of undoped Cd 1 -x Zn x As 2 single crystals with x ≤ 0.06 are measured in the range 85-300 K. The results are used to determine the ionization energies of donor and acceptor levels produced in the crystals by structural defects: ε d ≈ 0.019, 0.26, and 0.42 eV; ε a = 0.24 and 0.34 eV, respectively. The nature of the structural defects responsible for these levels is discussed.

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Section: Resultsmentioning

confidence: 71%

Section: Resultsmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 96%

“…Therefore, the ε g of Cd 1 -x Zn x As 2 solid solution with x = 0.03 and 0.06 is larger than that of CdAs 2 by 5 and 14 meV, respectively [6].…”

Section: Introductionmentioning

confidence: 84%

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Structural Defects in Cd1 − x Zn x As2 Solid Solutions

et al. 2005

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Thermodynamic Evaluation and Optimization of the As–Cd, As–Zn and As–Cd–Zn Systems

Kidari

Chartrand

2023

Metall Mater Trans B

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In this work, a critical evaluation of all available phase diagrams and thermodynamic data for the As–Cd, As–Zn and As–Cd–Zn systems has been performed and thermodynamic assessments over the whole composition ranges are presented using the CALPHAD method. To predict thermodynamic properties and phase equilibria for these systems, the Modified Quasichemical Model for short range ordering was used for the liquid phase and the Compound Energy Formalism was used for the solid solutions. The optimized binary systems are in good agreement with existing experimental data. Within the ternary system predicted phase equilibria, the $${\text{ZnAs}}_{2}{-}{\text{CdAs}}_{2}$$ ZnAs 2 - CdAs 2 and $${{\text{Zn}}_{3}\text{As}}_{2}{-}{{\text{Cd}}_{3}\text{As}}_{2}$$ Zn 3 As 2 - Cd 3 As 2 sections are in good agreement with the experimental data. Also, the eutectic temperature is accurately optimized for $${\text{ZnAs}}_{2}{-}{{\text{Cd}}_{3}\text{As}}_{2}$$ ZnAs 2 - Cd 3 As 2 and $${{\text{Zn}}_{3}\text{As}}_{2}{-}{\text{CdAs}}_{2}$$ Zn 3 As 2 - CdAs 2 . However, the calculated liquidus of these two joins are less satisfactory compared to the experimental data. This is most likely due to the polymerization behavior of arsenic and its multivalence, which is not considered by the model used in this work.

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