Accession Number : ADA295004

Title :   Development of Si Light Emitting Technology Based on Si Quantum Wires.

Descriptive Note : Final technical rept. 30 Sep 91-31 Mar 94,

Corporate Author : TEXAS UNIV AT AUSTIN

Personal Author(s) : Kwong, Dim-Lee

PDF Url : ADA295004

Report Date : 31 MAR 1994

Pagination or Media Count : 29

Abstract : The objectives of this program are four folds. (1) Process development: develop new techniques to fabricate luminescent PS, control the luminescence spectra, and process PS with minimal damage to the luminescent properties. To that end, we have developed a novel approach to produce luminescent PS without an external electrical bias by stain etching Si in HF-HNO3-based solution. In addition, we have utilized dry oxidation to efficiently control the PL spectrum. Excellent PL selectivity with micrometer resolution was also achieved by protecting Si with a metal or dielectric mask during anodization. (2) Material study: characterize the microstructure and physical chemistry of luminescent PS as functions of preparation conditions by microscopic and spectroscopic techniques. (3) PL mechanism study: investigate the origin of visible PL in PS by studying quantum-size effects, H-based models, molecular electronics, as well as the effects of surface passivation. (4) Electroluminescence (EL) devices: fabricate and characterize the PS-based EL devices. Surface-emitting and edge-emitting light-emitting diodes (LEDs) have been fabricated and critically characterized. jg p.3

Descriptors :   *QUANTUM THEORY, *WIRE, *SILICON, *LUMINESCENCE, *LIGHT EMITTING DIODES, EMISSION, METALS, MICROSTRUCTURE, PREPARATION, SPECTROSCOPY, MATERIALS, COMPOSITE MATERIALS, ELECTROLUMINESCENCE, PHOTOLUMINESCENCE, RESOLUTION, DIELECTRICS, ETCHING, ELECTRICAL PROPERTIES, MOISTURE CONTENT, SURFACES, OXIDATION, LOW LEVEL, EXTERNAL, BIAS, MASKS, ANODIC COATINGS, FOLDING, PASSIVITY, MOLECULAR ELECTRONICS, HYDROGEN FLUORIDE, DISCOLORATION, PHYSICAL CHEMISTRY.

Subject Categories : Inorganic Chemistry
      Physical Chemistry
      Electrical and Electronic Equipment
      Electricity and Magnetism
      Optics
      Quantum Theory and Relativity

Distribution Statement : APPROVED FOR PUBLIC RELEASE