Features of nanometer scale islands on CdSe/ZnSe surfaces

Zhang, B. P.; Zhang, B.P.; Manh, D. D.; Manh, D.D.; Wakatsuki, K.; Watatsuki, K.; Segawa, Y.
December 2000
Applied Physics Letters;12/11/2000, Vol. 77 Issue 24
Academic Journal
We examined the early-stage (within a few hours) properties in air of nanometer scale islands formed on a CdSe/ZnSe surface. When a CdSe/ZnSe surface grown in vacuum was exposed to air, some islands were newly formed. The aspect ratio of the island was found to increase first and then decrease. A depletion zone was observed in the perimeter of the island which indicates the intermixing of ZnSe into the island. Surface analyses using Auger electron spectroscopy indicated that the island was composed mainly of oxides and the outer shell was Zn enriched and Cd depleted. This letter shows that surface oxidation plays a key role in the formation of islands on CdSe/ZnSe surfaces in atmosphere. © 2000 American Institute of Physics.


Related Articles

  • The band edge luminescence of surface modified CdSe nanocrystallites: Probing the luminescing state. Kuno, M.; Lee, J.K. // Journal of Chemical Physics;6/15/1997, Vol. 106 Issue 23, p9869 

    Studies the luminescence of surface modified cadmium selenium nanocrystallites. Indications of the origins of the band edge luminescence of the compound crystallites; Optical inactivity of fine structure states; Modification of the surface of the nanocrystals.

  • Manipulation of luminescence from CdSe nanoparticles by three-dimensional photonic crystal. Chuang, C. M.; Lu, W. B.; Su, W. F.; Lin, C. M.; Chen, Y. F. // Journal of Applied Physics;5/1/2005, Vol. 97 Issue 9, p096104 

    We have demonstrated that the luminescence properties of CdSe nanoparticles can be manipulated by self-assembled silica photonic crystal. When the emitting wavelength of nanoparticles matches the stop band of the photonic crystal, the photoluminescence of the CdSe nanoparticles can be greatly...

  • Photonics: Charge of the light brigade. Nesbitt, David J. // Nature;12/14/2007, Vol. 450 Issue 7173, p1172 

    The article discusses the result of the study by M. J. Kuno which describes how the external electric field controls the emission of light coming from the semiconductor nanowires. It highlights the discovery which implicates the design of such wires in nanocircuits. Methods of study including...

  • Response to 'Comment on 'Ground state exciton lasing in CdSe submonolayers inserted in a ZnSe.... Ledentsov, N.N.; Krestnikov, I.L. // Applied Physics Letters;5/19/1997, Vol. 70 Issue 20, p2766 

    Responds to comments on an article regarding ground state exciton lasing in CdSe submonolayers inserted in a ZnSe matrix. Details on the photoluminescence spectra of the CdSe-ZnSe structures; Indications of the width of the luminescence emission; Information on the exciton-induced waveguiding...

  • Polarized luminescence in CdS/ZnSe quantum-well structures. Schmidt, M.; Gru¨n, M.; Petillon, S.; Kurtz, E.; Klingshirn, C. // Applied Physics Letters;7/3/2000, Vol. 77 Issue 1 

    The photoluminescence from type II CdS/ZnSe quantum-well structures is found to be polarized with respect to the <110> directions with polarization degrees up to 20%. The absolute polarization direction is related to the interface bond directions in samples with differently prepared interfaces....

  • Optical Properties of Zinc Selenide Produced by Isovalent Substitution. Barasyuk, Ya. N.; Makhniy, V. P.; Sletov, M. M.; Stets, E. V. // Russian Physics Journal;Jul2003, Vol. 46 Issue 7, p736 

    The reflectance and photoluminescence spectra of layers of zinc selenide with cubic and hexagonal modifications produced by isovalent substitution are investigated. It is established that the main band in the photoluminescence spectra at 300 K is the edge band associated with the exciton...

  • Polishing of ZnSe using rosin-based resins. Gavrishchuk, E. M.; Vilkova, E. Yu.; Timofeev, O. V.; Kushnir, S. R.; Radbil’, B. A. // Inorganic Materials;Jul2006, Vol. 42 Issue 7, p699 

    We describe mechanical and chemomechanical polishing of CVD ZnSe with the use of various polishing and adhesive rosin-based resins and examine the effect of the softening temperature of polishing resins on the material removal rate and the optical characteristics of CVD ZnSe.

  • Investigations on the Stranski-Krastanow growth of CdSe quantum dots. Schikora, D.; Schwedhelm, S.; As, D. J.; As, D.J.; Lischka, K.; Litvinov, D.; Rosenauer, A.; Gerthsen, D.; Strassburg, M.; Hoffmann, A.; Hoffman, A.; Bimberg, D. // Applied Physics Letters;1/24/2000, Vol. 76 Issue 4 

    We have investigated the growth kinetics of the self-assembled formation of coherently strained CdSe islands. We have found that two distinctly different types of islands are formed in succession. Analyzing the density distribution function of the two dominating size classes of islands, we show...

  • Enhanced color conversion from colloidal CdSe/CdS dot/rods by vertical microcavities. Pühringer, H.; Roither, J.; Kovalenko, M. V.; Eibelhuber, M.; Schwarzl, T.; Talapin, D. V.; Heiss, W. // Applied Physics Letters;9/13/2010, Vol. 97 Issue 11, p111115 

    Colloidal CdSe/CdS dot/rods exhibit efficient photoluminescence from the spherical CdSe dots at wavelengths well below the absorption edge of the rod material. This property makes dot/rods advantageous for color conversion applications, especially when they are embedded in optical microcavities...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics