Download or read book MOVPE Growth and Characterization of ZnSe Based Materials for Short wavelength Multiple Quantum Well Optical Modulator Applications written by Kevin Xunde Bao and published by . This book was released on 2000 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2001 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Doctoral Dissertations written by and published by . This book was released on 2000 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Omvpe Growth and Characterization of Znse Based Materials for Blue green Laser Applications written by Milind R Gokhale and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Blue-green light emitting diodes and lasers have been the driving force behind the dramatic improvement in the growth technology of ZnSe based II-VI materials. While blue-green laser diodes grown by molecular beam epitaxy are a reality, OMVPE (organometallic vapor phase epitaxy) grown p-n junction lasers have remained elusive. This study involves the growth of undoped films using a photoassisted low-temperature technique. Also, doping studies were undertaken to achieve n- and p-type ZnSe using chlorine and nitrogen, respectively. A simulation of the ZnSe/ZnTe MQW contacts to p-ZnSe is also reported. High temperature ZnSe films grown using dialkyl sources DMZn and DMSe, have been found to exhibit undesirable yellow emissions from self-activated deep levels. A study of an alternate low-temperature, UV light assisted technique for the growth of high optical quality ZnSe films is presented. We have shown an interplay of UV intensity and temperature in determining the optical quality of these layers. A temperature dependent UV intensity threshold, above which specular morphology and suppression of the deep level emissions has been observed. By the use of cadmium doping a further reduction in deep-level yellow emissions is achieved. Properties of n-type photoassisted ZnSe films co-doped with Cd and Cl have also been investigated. The samples co-doped with Cd showed increased incorporation of the Cl donors. By the use of Cd co-doping, we have achieved the highest electron concentration yet reported $(2\times10\sp#x18;\ \rm cm\sp{-3})$ for HCl doping of OMVPE-grown ZnSe. We propose a model based on the compensation of tetrahedral misfit to explain these results. The nitrogen doping of ZnSe to achieve p-type conductivity was studied using tertiarybutyl amine as dopant source. The level of nitrogen incorporation was determined from the structure of the donor-acceptor pair (DAP) emissions in the photoluminescence spectrum. The effects of growth temperature, UV intensity during growth, and dopant flow on the incorporation of nitrogen in ZnSe layers have been investigated. Nitrogen concentrations comparable to MBE-grown ZnSe:N films, were obtained for lower growth temperatures and reduced UV intensities. Most of the ZnSe:N films were highly resistive indicating hydrogen passivation of nitrogen acceptors.
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1997 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electrical Electronics Abstracts written by and published by . This book was released on 1997 with total page 2240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book OMVPE Growth and Characterization of ZnSe Based Materials for Blue green Laser Application written by Milind R. Gokhale and published by . This book was released on 1995 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ceramic Abstracts written by American Ceramic Society and published by . This book was released on 1996 with total page 1000 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Engineering Index Annual written by and published by . This book was released on 1992 with total page 2264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since its creation in 1884, Engineering Index has covered virtually every major engineering innovation from around the world. It serves as the historical record of virtually every major engineering innovation of the 20th century. Recent content is a vital resource for current awareness, new production information, technological forecasting and competitive intelligence. The world?s most comprehensive interdisciplinary engineering database, Engineering Index contains over 10.7 million records. Each year, over 500,000 new abstracts are added from over 5,000 scholarly journals, trade magazines, and conference proceedings. Coverage spans over 175 engineering disciplines from over 80 countries. Updated weekly.
Download or read book Physics Briefs written by and published by . This book was released on 1993 with total page 1420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heteroepitaxy and Characterization of ZnSe based Layers written by Xiaoguang Zhang and published by . This book was released on 2001 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth and Characterization of ZnCdMgSe ZnCdSe Quantum Wells on InP Substrates for Visible Emitters written by and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-quality lattice-matched quantum well (QW) structures of ZnCdSe/ZnCdMgSe were grown on InP substrates by molecular beam epitaxy. Emission energies from 2.306 to 2.960 eV were measured by low-temperature photoluminescence for samples with QW thicknesses between 5 and 80 A. Bandgap measurements indicate that these structures could be used in entirely lattice-matched blue, green, and yellow diode laser structures. Experimental measurements indicated that these structures have very little strain; hence, these materials could possibly be less prone to degradation than the current II-VI blue-green lasers grown on GaAs substrates.
Download or read book The MOVPE Growth and Characterization of ZnMgS on Silicon written by Angel Luis Rodriguez and published by . This book was released on 2001 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metalorganic Vapor Phase Epitaxy MOVPE written by Stuart Irvine and published by John Wiley & Sons. This book was released on 2019-10-07 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt: Systematically discusses the growth method, material properties, and applications for key semiconductor materials MOVPE is a chemical vapor deposition technique that produces single or polycrystalline thin films. As one of the key epitaxial growth technologies, it produces layers that form the basis of many optoelectronic components including mobile phone components (GaAs), semiconductor lasers and LEDs (III-Vs, nitrides), optical communications (oxides), infrared detectors, photovoltaics (II-IV materials), etc. Featuring contributions by an international group of academics and industrialists, this book looks at the fundamentals of MOVPE and the key areas of equipment/safety, precursor chemicals, and growth monitoring. It covers the most important materials from III-V and II-VI compounds to quantum dots and nanowires, including sulfides and selenides and oxides/ceramics. Sections in every chapter of Metalorganic Vapor Phase Epitaxy (MOVPE): Growth, Materials Properties and Applications cover the growth of the particular materials system, the properties of the resultant material, and its applications. The book offers information on arsenides, phosphides, and antimonides; nitrides; lattice-mismatched growth; CdTe, MCT (mercury cadmium telluride); ZnO and related materials; equipment and safety; and more. It also offers a chapter that looks at the future of the technique. Covers, in order, the growth method, material properties, and applications for each material Includes chapters on the fundamentals of MOVPE and the key areas of equipment/safety, precursor chemicals, and growth monitoring Looks at important materials such as III-V and II-VI compounds, quantum dots, and nanowires Provides topical and wide-ranging coverage from well-known authors in the field Part of the Materials for Electronic and Optoelectronic Applications series Metalorganic Vapor Phase Epitaxy (MOVPE): Growth, Materials Properties and Applications is an excellent book for graduate students, researchers in academia and industry, as well as specialist courses at undergraduate/postgraduate level in the area of epitaxial growth (MOVPE/ MOCVD/ MBE).
Download or read book Japanese Technical Periodical Index written by and published by . This book was released on 1987 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book MOVPE growth and characterization of Zn3As2 written by Gerhardt Jacobus Scriven and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
