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Chromium Diffusion Doping on ZnSe CrystalsChromium doped zinc selenide crystal have recently been demonstrated to be a promising material for near-IR room temperature tunable lasers which have an emission range of 2-3 micrometers. In this study a new diffusion doping process has been developed for incorporation of Cr(+2) ion into ZnSe wafers. This process has been successfully performed under isothermal conditions, at temperatures above 800 C. Concentrations in excess of 10(exp 19) Cr(+2) ions/cu cm, an order of magnitude larger than previously reported in melt grown ZnSe material, have been obtained by diffusion doping, as estimated from optical absorption measurements. The diffusivity was estimated to be about 10(exp -8) sq cm/sec using a thin film diffusion model. Resistivity was derived from current-voltage measurements and in the range of 10(exp 13) and 10(exp 16) omega-cm. The emission spectra and temperature dependent lifetime data will also be presented and discussed.
Document ID
19970028673
Acquisition Source
Headquarters
Document Type
Conference Paper
Authors
Journigan, Troy D.
(Fisk Univ. Nashville, TN United States)
Chen, K.-T.
(Fisk Univ. Nashville, TN United States)
Chen, H.
(Fisk Univ. Nashville, TN United States)
Burger, A.
(Fisk Univ. Nashville, TN United States)
Schaffers, K.
(Lawrence Livermore National Lab. Livermore, CA United States)
Page, R. H.
(Lawrence Livermore National Lab. Livermore, CA United States)
Payne, S. A.
(Lawrence Livermore National Lab. Livermore, CA United States)
Date Acquired
August 17, 2013
Publication Date
January 1, 1997
Publication Information
Publication: The First National Student Conference: NASA University Research Centers at Minority Institutions
Subject Category
Solid-State Physics
Accession Number
97N27402
Funding Number(s)
CONTRACT_GRANT: DE-F603-94SF-20368
Distribution Limits
Public
Copyright
Public Use Permitted.
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