DOI: 10.1063/1.1735283. Mechanism and Defect Responsible for Edge Emission in CdS

Mechanism and Defect Responsible for Edge Emission in CdS

10.1063/1.1735283

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

The nature of the green and blue emission at 78°K in CdS has been investigated. On the basis of the wavelengths of absorption and emission lines the blue component is assigned as exciton decay. Measurement of the decay of the blue luminescence, following excitation by a 10−8 sec pulse of 1-Mev electrons, gave an exciton lifetime &lt;10−8 sec. Similar measurements have shown that the green component has a slower decay with emission occurring as long as 20 μsec after the excitation has ended. These results have been used to support the recombination of a free electron with a trapped hole as the mechanism for green edge emission. Heating in sulfur vapor quenches the green luminescence in a controllable fashion. From the infrared reflection spectra of CdS in the region 10 to 50 μ the optical phonon frequencies were determined. The value of 305 cm−1 for the longitudinal phonon is in good agreement with the prediction of Kröger and Meyer from edge emission measurements, showing that the emission is coupled to the lattice through the longitudinal optical phonon. Based on an analysis of the effects on edge emission produced by heat treatment in sulfur vapor and electron irradiation with 0.20 and 1.0-Mev electrons, a sulfur vacancy is suggested as the recombination center associated with the green edge emission.

Bibliography

Collins, R. J. (1959). Mechanism and Defect Responsible for Edge Emission in CdS. Journal of Applied Physics, 30(8), 1135â1140.

Authors 1

R. J. Collins (first)

References 22 Referenced 105

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Dates

Type	When
Created	20 years, 4 months ago (April 22, 2005, 12:14 p.m.)
Deposited	1 year, 6 months ago (Feb. 1, 2024, 5:53 p.m.)
Indexed	3 months, 3 weeks ago (May 7, 2025, 2:21 p.m.)
Issued	66 years, 1 month ago (Aug. 1, 1959)
Published	66 years, 1 month ago (Aug. 1, 1959)
Published Print	66 years, 1 month ago (Aug. 1, 1959)

Funders 0

None

BibTeX

@article{Collins_1959, title={Mechanism and Defect Responsible for Edge Emission in CdS}, volume={30}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.1735283}, DOI={10.1063/1.1735283}, number={8}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Collins, R. J.}, year={1959}, month=aug, pages={1135–1140} }

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