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Fill Out the Form Below to Join the Sit Essay

  • Submitted by: anonymous
  • on March 24, 2014
  • Category: College Admissions
  • Length: 5,289 words

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Below is an essay on "Fill Out the Form Below to Join the Sit" from Anti Essays, your source for research papers, essays, and term paper examples.

Materials 2011, 4, 1182-1193; doi:10.3390/ma4071182
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materials
ISSN 1996-1944 www.mdpi.com/journal/materials Article

Experimental Determination of the Fluorescence Quantum Yield of Semiconductor Nanocrystals
Julien Laverdant 1,2 , Willy Daney de Marcillac 1,2 , Carlos Barthou 1,2 , Vu Duc Chinh 3 , Catherine Schwob 1,2 , Laurent Coolen 1,2,⋆ Paul Benalloul 1,2 , Pham Thu Nga 3 and Agn` s Maˆtre 1,2 e ı

1

Universit´ Pierre et Marie Curie-Paris 6, UMR 7588, INSP, 4 place Jussieu, PARIS cedex 05, France; e E-Mails: julien.laverdant@insp.jussieu.fr (J.L.); willy.marcillac@insp.jussieu.fr (W.D.M.); carlos.barthou@insp.jussieu.fr (C.B.); catherine.schwob@insp.jussieu.fr (C.S.); paul.benalloul@insp.jussieu.fr (P.B.); agnes.maitre@insp.jussieu.fr (A.M.) 2 CNRS, UMR7588, INSP, Paris cedex 05, France 3 Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Str., Cau giay Dist. Hanoi 71000, Vietnam; E-Mails: chinhvd@ims.vast.ac.vn (V.D.C.); ngalamvn@yahoo.com (P.T.N.)


Author to whom correspondence should be addressed; E-Mail: laurent.coolen@insp.jussieu.fr

Received: 30 April 2011; in revised form: 23 June 2011 / Accepted: 27 June 2011 / Published: 30 June 2011

Abstract: Many studies have considered the luminescence of colloidal II–VI nanocrystals, both in solution at a collective scale and at an individual scale by confocal microscopy. The quantum yield is an important figure of merit for the optical quality of a fluorophore. We detail here a simple method to determine the quantum yield of nanocrystals in solution as a function of the absorption. For this purpose, we choose rhodamine 101 as a reference dye to measure the nanocrystal fluorescence quantum yield. The influence of the concentration on quantum yield is therefore studied for both the reference and the solutions of nanocrystals and is found to be critical for the acuity of the method. Different types of nanocrystals are studied to illustrate...

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