Download or read book Photoelectronic Properties of Zinc Phosphide Crystals Films and Heterojunctions Quarterly Progress Report No 11 for the period October 1 December 31 1981 written by and published by . This book was released on 1981 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photoelectronic Properties of Zinc Phosphide Crystals Films and Heterojunctions for the Period October 1 December 31 1981 written by Richard H. Bube and published by . This book was released on 1981 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photoelectronic Properties of Zinc Phosphide Crystals Films and Heterojunctions written by Richard H. Bube and published by . This book was released on 1981 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1982 with total page 1696 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photoelectronic Properties of Zinc Phosphide Crystals Films and Heterojunctions written by Richard H. Bube and published by . This book was released on 1980 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this research program is to investigate the photoelectronic properties of zinc phosphide (Zn3P2 in single crystal form, in thin-film form, and in heterojunctions in which Zn3P2 forms one of the elements. This research will be directed toward understanding the role of crystalline defects and impurities in Zn3P2, the nature of the electronic charge transport in single crystal and thin-film material, and the properties of photovoltaic heterojunctions involving Zn3P2. The scope of the program extends from basic investigations of materials properties on single crystals to the preparation and characterization of all-thin-film heterojunction divices. One of the principal motivations behind this research program is the realization that Zn3P2 is a relatively uninvestigated yet ideal component for photovoltaic heterojunction use in solar energy conversion. The proposed program will concentrate on the basic materials problems involved with Zn3P2, providing the kind of information needed for other more developmental programs directed toward actual practical cells.

Download or read book Photoelectronic Properties of Zinc Phosphide Crystals Films and Heterojunctions written by Richard H. Bube and published by . This book was released on 1981 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this research program is to investigate the photoelectronic properties of zinc phosphide (Zn3P2 in single crystal form, in thin-film form, and in heterojunctions in which Zn3P2 forms one of the elements. This research will be directed toward understanding the role of crystalline defects and impurities in Zn3P2, the nature of the electronic charge transport in single crystal and thin-film material, and the properties of photovoltaic heterojunctions involving Zn3P2. The scope of the program extends from basic investigations of materials properties on single crystals to the preparation and characterization of all-thin-film heterojunction divices. One of the principal motivations behind this research program is the realization that Zn3P2 is a relatively uninvestigated yet ideal component for photovoltaic heterojunction use in solar energy conversion. The proposed program will concentrate on the basic materials problems involved with Zn3P2, providing the kind of information needed for other more developmental programs directed toward actual practical cells.

Download or read book Photoelectronic Properties of Zinc Phosphide Crystals Films and Heterojunctions for the Period July 1 September 30 1981 written by Richard H. Bube and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photoelectronic Properties of Zinc Phosphide Crystals Films and Heterojunctions Quarterly Progress Report No 10 for the Period July 1 September 30 1981 written by and published by . This book was released on 1981 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photoelectronic Properties of Zinc Phosphide Crystals Films and Heterojunctions written by and published by . This book was released on 1981 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photoelectronic Properties of Zinc Phosphide Crystals Films and Heterojunctions for the Period January 1 March 31 1982 written by Richard H. Bube and published by . This book was released on 1982 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photoelectronic Properties of Zinc Phosphide Crystals Films and Heterojunctions Quarterly Progress Report No 11 October 1 December 31 1981 written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Variations in crystal growth techniques are continuing with the goal of: (1) improving single crystal quality; and (2) producing variations in crystal properties by doping and post-growth variations of stoichiometry. DLTS measurements using Mg/Zn3P2 Schottky diodes gave information on three deep levels between 0.55 and 0.66 eV above the valence band in sublimation grown crystals with densities in the 1015 to 1016 cm−3 range, and a shallower level at 0.12 eV with a density of 1015 cm−3 in an iodine-transport grown crystal. Investigation of surface properties of Zn3P2 indicate that a Br-MeOH etch leaves a Zn-rich surface for both sublimation-grown and iodine-transport grown crystals. Detailed measurements were made on thick Mg/Zn3P2 junctions on sublimation-grown and iodine-transport grown crystals of log J-V characteristics as a function of temperature, for crystal substrates as etched, and after heat treatment in hydrogen at several temperatures. A systematic change in the junction transport mechanism from tunneling at heat-treatment temperatures less than 300°C to recombination/generation for heat-treatment temperatures between 300 and 500°C was found for Zn3P2 crystals grown by both growth techniques. A simple model involving a depletion of free carrier density near the surface as a result of heat treatment in hydrogen is proposed. Thin film Mg/Zn3P2 cells showed log J-V characteristics that are strongly light dependent, indicating an increase in tunneling with illumination. Evidence that the barrier height of the Mg/Zn3P2 junction is actually of the order of 0.9 to 1.0 eV was obtained. Attempts to prepare ITO/Zn3P2 junctions by electron-beam evaporation of ITO on single crystal substrates yielded poor diodes and negligible photovoltaic behavior.

Download or read book Photoelectronic Properties of Zinc Phosphide Crystals Films and Heterojunctions for the Period July 1 September 30 1980 written by Solar Energy Research Institute and published by . This book was released on 1980 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photoelectronic Properties of Zinc Phosphide Crystals Films and Heterojunctions for the Period April 1 June 30 1980 written by Solar Energy Research Institute and published by . This book was released on 1980 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photoelectronic Properties of Zinc Phosphide Crystals Films and Heterojunctions written by Richard H. Bube and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photoelectronic Properties of Zinc Phosphide Crystals Films and Heterojunctions Quarterly Progress Report No 13 for the Period Covering April 1 June 30 1982 written by and published by . This book was released on 1982 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1982 with total page 844 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Solar Energy Technical Publications Catalog written by and published by . This book was released on 1987 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: