Accession Number : ADA292701

Title :   Visible Light Emitting Materials and Injection Devices.

Descriptive Note : Quarterly progress rept.,

Corporate Author : FLORIDA UNIV GAINESVILLE DEPT OF MATERIALS SCIENCE AND ENGINEERING

Personal Author(s) : Holloway, Paul H.

PDF Url : ADA292701

Report Date : 28 FEB 1995

Pagination or Media Count : 18

Abstract : We performed real-time, in-situ CL intensity measurements this quarter during the MBE growth of Cd(x)Zn(1-x)Se/ZnSe MQW structures in which we varied the barrier and/or well widths for a fixed Cd(x)Zn(1-x)Se composition (x=0.2). In each case we quantified the integrated intensity of the CL emission observed during the growth. For the MQW structures grown thus far, the most intense integrated CL emission was detected from a structure comprised of 2OOA thick ZnSe barriers and 5OA thick Cd(0.2)Zn(0.8)Se quantum wells. The 200A ZnSe/50 A CdZnSe MQW structure also exhibited strong room temperature exciton emission when ex-situ photoluminescence (PL) was performed on the sample. The PL intensity was measured by Dr. Simmons' group. Consequently, it appears that real-time, in-situ CL monitoring could have interesting applications with regard to the design and production of MQW structures and we plan to continue working in this area. jg

Descriptors :   *COMPOSITE MATERIALS, *VISIBLE SPECTRA, *LIGHT EMITTING DIODES, *INJECTION DIODES, DIODES, SIMULATION, EMISSION, MEASUREMENT, INTEGRATED SYSTEMS, PRODUCTION, MODELS, LAYERS, QUANTUM WELLS, PHOTOLUMINESCENCE, THIN FILMS, INTENSITY, ZINC SULFIDES, EPITAXIAL GROWTH, LASERS, MOLECULAR BEAMS, NITRIDES, ROOM TEMPERATURE, GAIN, CADMIUM, GALLIUM, GROUP III COMPOUNDS, GROUP IV COMPOUNDS, GROUP V COMPOUNDS, WIDTH, INJECTORS, EMITTERS, EXCITONS, GROUP II COMPOUNDS, SELENIUM, CHEMILUMINESCENCE, GROUP VI COMPOUNDS.

Subject Categories : Laminates and Composite Materials
      Inorganic Chemistry
      Lasers and Masers
      Atomic and Molecular Physics and Spectroscopy
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE