Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/326364
Type: Artigo
Title: Thermoacoustic And Thermoreflectance Imaging Of Biased Integrated Circuits: Voltage And Temperature Maps
Author: Hernandez-Rosales
E.; Cedeno
E.; Hernandez-Wong
J.; Rojas-Trigos
J. B.; Marin
E.; Gandra
F. C. G.; Mansanares
A. M.
Abstract: In this work a combined thermoacoustic and thermoreflectance set-up was designed for imaging biased microelectronic circuits. In particular, it was used with polycrystalline silicon resistive tracks grown on a monocrystalline Si substrate mounted on a test chip. Thermoreflectance images, obtained by scanning a probe laser beam on the sample surface, clearly show the regions periodically heated by Joule effect, which are associated to the electric current distribution in the circuit. The thermoacoustic signal, detected by a pyroelectric/piezoelectric sensor beneath the chip, also discloses the Joule contribution of the whole sample. However, additional information emerges when a non-modulated laser beam is focused on the sample surface in a raster scan mode allowing imaging of the sample. The distribution of this supplementary signal is related to the voltage distribution along the circuit. Published by AIP Publishing.
Editor: Amer Inst Physics
Melville
Rights: fechado
Identifier DOI: 10.1063/1.4959828
Address: http://aip-scitation-org.ez88.periodicos.capes.gov.br/doi/abs/10.1063/1.4959828
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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