dc.contributor.author |
Alvarez-Fregoso, O |
|
dc.contributor.author |
Zelaya-Angel, O |
|
dc.contributor.author |
Mendoza-Alvarez, JG |
|
dc.date.accessioned |
2011-01-22T10:26:48Z |
|
dc.date.available |
2011-01-22T10:26:48Z |
|
dc.date.issued |
2003 |
|
dc.identifier.issn |
0022-3697 |
|
dc.identifier.uri |
http://hdl.handle.net/11154/1774 |
|
dc.description.abstract |
CdNiTe ternary semiconductor thin films were deposited using the cathodic erosion by radiofrequency technique (r.f. sputtering), on 7059 Corning glass substrates. Cd1-xNixTe targets with different Ni compositions in the range 0 < x < 0. 15 were used. Structural analysis in these samples using SEM and X-ray diffraction have shown that films are polycrystalline with grain sizes between 26 and 35 nm |
en_US |
dc.description.abstract |
for higher Ni-content, films have smaller grain sizes. As-grown samples and thermal-annealed films in an inert atmosphere at temperatures of 300 and 400 T were studied using the thermoreflectance spectroscopy (TR) at room temperature. From these measurements the bandgap, energy variation as a function of the nanocrystallite size and the annealing temperatures was obtained. From the TR spectra a systematic shift to higher energies of the E-0-point as the grain size decreases has been measured, and we have interpreted this result as due to the CdTe-Ni alloying process added to a quantum-size effect in which the nanocrystallites act as quantum dots. We discuss the TR lineshapes and their evolution with thermal annealing. (C) 2003 Elsevier Science Ltd. All rights reserved. |
en_US |
dc.language.iso |
en |
en_US |
dc.title |
Thermoreflectance studies in CdNiTe nanocrystalline films |
en_US |
dc.type |
Article |
en_US |
dc.identifier.idprometeo |
2075 |
|
dc.source.novolpages |
64(4):565-570 |
|
dc.subject.wos |
Chemistry, Multidisciplinary |
|
dc.subject.wos |
Physics, Condensed Matter |
|
dc.description.index |
WoS: SCI, SSCI o AHCI |
|
dc.subject.keywords |
semiconductors |
|
dc.subject.keywords |
thin films |
|
dc.subject.keywords |
optical properties |
|
dc.relation.journal |
Journal of Physics and Chemistry of Solids |
|