Accession Number:

ADA183517

Title:

Blue-Green Laser Diode Research Program.

Descriptive Note:

Quarterly technical progress rept. no. 5, 1 Apr-30 Jun 87,

Corporate Author:

MINNESOTA MINING AND MFG CO ST PAUL ELECTRONIC AND INFORMATION SECTOR LAB

Personal Author(s):

• Potts,J. E.
• Mar,H. A.
• Walker,C. T.

Report Date:

1987-07-01

Pagination or Media Count:

72.0

Abstract:

The Znse materials work was devoted almost exclusively to various attempts at p doping, and some of the results are quite encouraging. The laboratories have tried both Na- and Li doping and have completed work on Sb-doping, including some laser assisted incorporation of Sb. Using a clean source of Na, the laboratories were able to incorporate larger concentrations of Na without a concomitant increase in unintentionally-incorporated extrinsic donors, as was the case when the Na2Se compound source was used. Na appears to be well-behaved in the sense that the incorporated-Na concentration increases in direct proportion to the incident Na flux. However, the films remain n-type, albeit of high resistivity, even at the highest Na concentrations. In addition, the photoluminescence PL in high-Na-concentrations films show large broad emission near 2.60 ev,implying the presence of structural defects, perhaps induced by the Na atoms themselves. Exploring the intrinsic properties of Na as an acceptor dopant in ZnSe was studied for the first time. Previous attempts were flawed by the simultaneous incorporation of unintentially- incorporated donors. Keywords Zinc selenide Doping, Sodium, Blue Green lasers.

Descriptors:

• *SEMICONDUCTOR LASERS
• ATOMS
• DOPING
• LASERS
• PHOTOLUMINESCENCE
• ZINC SELENIDES
• BLUE(COLOR)
• GREEN(COLOR)
• SOURCES
• RESISTANCE
• MATERIALS
• DEFECTS(MATERIALS)
• STRUCTURAL PROPERTIES
• SODIUM

Subject Categories:

• Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE