Download or read book The Optical Properties of Colloidal Cadmium Sulphide written by Simon Richard Stebbing and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structural Electronic and Optical Properties of Cadmium Sulfide Nanoparticles written by Johannes Frenzel and published by . This book was released on 2007 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structure and Optical Properties of Sputtered Films of Cadmium Sulfide written by R.G. Thomasos and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electrical and Optical Properties of Cadmium Sulfide cadmium Selenide Mixed Crystals written by Walter G. Geitner and published by . This book was released on 1967 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Properties of Magnesium Fluoride Zinc Sulfide and Cadmium Sulfide written by Joseph F. Hall and published by . This book was released on 1956 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some electrical and optical properties of cadmium sulphide written by Leonard Jeffrey Fass and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Properties of Cadmium Sulfide Zinc Selenide and Zinc Manganese Selenide Semiconductor Films written by Rachid Dahmani and published by . This book was released on 1992 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cadmium Sulphide Nanoparticles written by Saraswathi Amma B and published by LAP Lambert Academic Publishing. This book was released on 2010-06 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductor nanoparticles have drawn much attention due to their size dependent properties. Cadmium Sulphide (CdS), due to its large Bohr exciton diameter, has applications in various areas like optoelectronics, photo catalysis, biological assays, optical data storage and sensing. The optical properties of CdS nanoparticles capped with different capping agents, synthesized in aqueous and non-aqueous medium are presented in this monograph. As surface states have significant influence on the optical properties, surface passivation is important for improving Photoluminescence property apart from controlling the particle size. Stability and the optical properties of CdS - Polyvinyl Alcohol (PVA) nanocomposite films are dealt. The effects of electron irradiation and also, a Zinc Sulphide (ZnS) coating on the luminescence properties of CdS nanoparticles are also given. This monograph is specially targeted to researchers working in the field of semiconductor nanoparticles as well as postgraduate students of Physics, Chemistry, Electrical and Materials Engineering.
Download or read book Electrical And Optical Properties Of Colloidal Quantum Dots And Quantum Dot Networks Role Of Surface States And Using Biomolecular Links In Network Assembly written by and published by . This book was released on 2004 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this paper are to determine the role of surface states in determining the electrical and optical properties of semiconductor quantum dots in colloidal suspensions, and to use biomolecules to facilitate the chemically-directed assembly of quantum dots networks with densities approximating 10(exp 17) cu cm. Absorption spectra and photoluminescence (PL) spectra of colloidal cadmium sulfide (CdS) quantum dots are analyzed to investigate the role of surface states in determining the electrical and optical properties of these semiconductor quantum dots. In addition, this work demonstrates the utility of using glycine-glycine-glycine-cysteine (GGGC) peptides and crossing-linking chemical reactions to achieve integrated networks of ZnS-coated CdSe quantum dots and CdS quantum dots.
Download or read book Structural Electronic and Optical Properties of Cadmium Sulfide Nanoparticles written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work, the structural, electronic, and optical properties of CdS nanoparticles with sizes up to 4nm have been calculated using density-functional theory (DFT). Inaccuracies in the description of the unoccupied states of the applied density-functional based tight-binding method (DFTB) are overcome by a new SCF-DFTB method. Density-functional-based calculations employing linear-response theory have been performed on cadmium sulfide nanoparticles considering different stoichiometries, underlying crystal structures (zincblende, wurtzite, rocksalt), particle shapes (spherical, cuboctahedral, tetrahedral), and saturations (unsaturated, partly saturated, completely saturated). For saturated particles, the calculated onset excitations are strong excitonic. The quantum-confinement effect in the lowest excitation is visible as the excitation energy decreases towards the bulk band gap with increasing particle size. Dangling bonds at unsaturated surface atoms introduce trapped surface states which lie below the lowest excitations of the completely saturated particles. The molecular orbitals (MOs), that are participating in the excitonic excitations, show the shape of the angular momenta of a hydrogen atom (s, p). Zincblende- and wurtzite-derived particles show very similar spectra, whereas the spectra of rocksalt-derived particles are rather featureless. Particle shapes that confine the orbital wavefunctions strongly (tetrahedron) give rise to less pronounced spectra with lower oscillator strengths. Finally, a very good agreement of the calculated data to experimentally available spectra and excitation energies is found.
Download or read book Electrical and Optical Properties of Electrostatically Graded Band Gap Multifilms of Cadmium Sulfide and Indium Doped Cadmium Sulfide written by Paul Edward Sotak and published by . This book was released on 1976 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Optical and Electrical Properties of Cadmium Sulfide and Lead Sulfide Then Films Prepared by Electron Beam Deposition written by Achiri Celestine Tange and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Various Optical Radiations and Water Vapor on Trapping Spectrum of Cadmium Sulfide written by Paul A. Faeth and published by . This book was released on 1967 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Colloidal Cadmium Selenide zinc Sulfide Lead Selenide and Lead Sulfide Quantum Dots for Use in Applications written by Stephen William Clark and published by . This book was released on 2006 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Colloidal semiconductor quantum dots are novel materials whose electronic and optical properties can be greatly enhanced from the bulk semiconductor properties by quantum confinement. A brief introduction to colloidal quantum dots and the effect of size on its electronic and optical properties will be given. CdSe/ZnS, PbS, and PbSe quantum dots will be described in more detail with regards to the research done in this dissertation. CdSe/ZnS quantum dots have luminescence that can be tuned in the visible, making them particularly suited for fluorescent labels in biological applications. In particular, their potential use as voltage sensors to detect cell membrane potentials and sphingosine phosphorylation will be discussed. PbS and PbSe quantum dots emit in the near infrared, wavelengths that are important to telecommunications. Their small third-order nonlinearity and relatively long (microsecond) lifetimes will be discussed in terms of dielectric screening. Fluoresence resonant energy transfer between PbS quantum dots will also be discussed.
Download or read book Nanostructured Lead Cadmium and Silver Sulfides written by Stanislav I. Sadovnikov and published by Springer. This book was released on 2017-09-02 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents and analyzes the influence of small size particles of lead, cadmium and silver sulfide on the properties of nonstoichiometric semiconductors. Important nonstoichiometry aspects in nanostructures are discussed, such as the distribution of sulfur atoms in nanofilms, a non-periodic distribution of the atomic planes in nanoparticles, interdependent changes in crystal structure of nanocrystalline material. Tuning the stoichiometry allows to obtain superionic conductivity and catalytic activity under visible light. The wavelength of the luminescence of nanoparticles changes with the size of the nanoparticles. Various methods to prepare nanostructured sulfides are described. Special attention is given to the hydrochemical bath deposition as a universal method for the synthesis of sulfides as nanofilms, stable colloidal solutions, quantum dots, isolated nanoparticles with a protective shell and heteronanostructures. The effect of nanoparticle size and nonstoichiometry on the band gap, optical and thermal properties of nanostructured sulfides is also considered. The novel applications of sulfide nanoparticles in nanoelectronics, catalysis, nanobiology and nanomedicine are sketched.
Download or read book A Study of the Migration of Colloidal Cadmium Sulphide written by Robert Nicolas Wenzel and published by . This book was released on 1917 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some optical properties of thin films of the sulphides of zinc cadmium and mercury written by William Robert Oliver and published by . This book was released on 1970 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
