Characterization of short-period ZnTe-ZnS superlattices grown by MBE

Takeshi Karasawa; Kazuhiro Ohkawa; Tsuneo Mitsuyu

doi:10.1016/0022-0248(90)90565-3

Characterization of short-period ZnTe-ZnS superlattices grown by MBE

Takeshi Karasawa^*, Kazuhiro Ohkawa, Tsuneo Mitsuyu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Structural properties of short period ( <30 Å) ZnTe-ZnS strained-layer superlattices (SLSs) have been examined by Raman spectroscopy and low temperature photoluminescence (PL). The longitudinal optical (LO) phonon of ZnS shows a stress-induced frequency shift, which is in close agreement with theoretical calculation. Although ZnTe LO phonon frequency shifts depending on the SLS structure, there is a discrepancy between experiment and calculation, implying a relaxation in the layer. PL spectra are dominated by one intense peak, and the peak energy shows a trend to shifts according to layer thicknesses and SL period as expected from Kronig-Penney model, but the energy value is lower.

Original language	English (US)
Pages (from-to)	464-467
Number of pages	4
Journal	Journal of Crystal Growth
Volume	99
Issue number	1-4
DOIs	https://doi.org/10.1016/0022-0248(90)90565-3
State	Published - Jan 1990
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics
Inorganic Chemistry
Materials Chemistry

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10.1016/0022-0248(90)90565-3

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title = "Characterization of short-period ZnTe-ZnS superlattices grown by MBE",

abstract = "Structural properties of short period ( <30 {\AA}) ZnTe-ZnS strained-layer superlattices (SLSs) have been examined by Raman spectroscopy and low temperature photoluminescence (PL). The longitudinal optical (LO) phonon of ZnS shows a stress-induced frequency shift, which is in close agreement with theoretical calculation. Although ZnTe LO phonon frequency shifts depending on the SLS structure, there is a discrepancy between experiment and calculation, implying a relaxation in the layer. PL spectra are dominated by one intense peak, and the peak energy shows a trend to shifts according to layer thicknesses and SL period as expected from Kronig-Penney model, but the energy value is lower.",

author = "Takeshi Karasawa and Kazuhiro Ohkawa and Tsuneo Mitsuyu",

year = "1990",

month = jan,

doi = "10.1016/0022-0248(90)90565-3",

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T1 - Characterization of short-period ZnTe-ZnS superlattices grown by MBE

AU - Karasawa, Takeshi

AU - Ohkawa, Kazuhiro

AU - Mitsuyu, Tsuneo

PY - 1990/1

Y1 - 1990/1

N2 - Structural properties of short period ( <30 Å) ZnTe-ZnS strained-layer superlattices (SLSs) have been examined by Raman spectroscopy and low temperature photoluminescence (PL). The longitudinal optical (LO) phonon of ZnS shows a stress-induced frequency shift, which is in close agreement with theoretical calculation. Although ZnTe LO phonon frequency shifts depending on the SLS structure, there is a discrepancy between experiment and calculation, implying a relaxation in the layer. PL spectra are dominated by one intense peak, and the peak energy shows a trend to shifts according to layer thicknesses and SL period as expected from Kronig-Penney model, but the energy value is lower.

AB - Structural properties of short period ( <30 Å) ZnTe-ZnS strained-layer superlattices (SLSs) have been examined by Raman spectroscopy and low temperature photoluminescence (PL). The longitudinal optical (LO) phonon of ZnS shows a stress-induced frequency shift, which is in close agreement with theoretical calculation. Although ZnTe LO phonon frequency shifts depending on the SLS structure, there is a discrepancy between experiment and calculation, implying a relaxation in the layer. PL spectra are dominated by one intense peak, and the peak energy shows a trend to shifts according to layer thicknesses and SL period as expected from Kronig-Penney model, but the energy value is lower.

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U2 - 10.1016/0022-0248(90)90565-3

DO - 10.1016/0022-0248(90)90565-3

M3 - Article

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SN - 0022-0248

VL - 99

SP - 464

EP - 467

JO - Journal of Crystal Growth

JF - Journal of Crystal Growth

IS - 1-4

ER -

Characterization of short-period ZnTe-ZnS superlattices grown by MBE

Abstract

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