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231224s2014 xx |||||o 00| ||eng c |
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|a 10.1021/la502403q
|2 doi
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|a eng
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1 |
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|a Gu, Junsi
|e verfasserin
|4 aut
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|a Analysis of the electrodeposition and surface chemistry of CdTe, CdSe, and CdS thin films through substrate-overlayer surface-enhanced Raman spectroscopy
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|c 2014
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 12.05.2015
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|a Date Revised 25.11.2016
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a The substrate-overlayer approach has been used to acquire surface enhanced Raman spectra (SERS) during and after electrochemical atomic layer deposition (ECALD) of CdSe, CdTe, and CdS thin films. The collected data suggest that SERS measurements performed with off-resonance (i.e. far from the surface plasmonic wavelength of the underlying SERS substrate) laser excitation do not introduce perturbations to the ECALD processes. Spectra acquired in this way afford rapid insight on the quality of the semiconductor film during the course of an ECALD process. For example, SERS data are used to highlight ECALD conditions that yield crystalline CdSe and CdS films. In contrast, SERS measurements with short wavelength laser excitation show evidence of photoelectrochemical effects that were not germane to the intended ECALD process. Using the semiconductor films prepared by ECALD, the substrate-overlayer SERS approach also affords analysis of semiconductor surface adsorbates. Specifically, Raman spectra of benzenethiol adsorbed onto CdSe, CdTe, and CdS films are detailed. Spectral shifts in the vibronic features of adsorbate bonding suggest subtle differences in substrate-adsorbate interactions, highlighting the sensitivity of this methodology
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Cadmium Compounds
|2 NLM
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|a Selenium Compounds
|2 NLM
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|a Sulfides
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|a cadmium sulfide
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|a Fahrenkrug, Eli
|e verfasserin
|4 aut
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|a Maldonado, Stephen
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 30(2014), 34 vom: 02. Sept., Seite 10344-53
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|x 1520-5827
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|g volume:30
|g year:2014
|g number:34
|g day:02
|g month:09
|g pages:10344-53
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|u http://dx.doi.org/10.1021/la502403q
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