Thermal parameters identification of micrometric layers of microelectronic devices by thermoreflectance microscopy
Langue
en
Article de revue
Ce document a été publié dans
Microelectronics Journal. 2004-10, vol. 35, n° 10, p. 811-816
Elsevier
Résumé en anglais
The objective of this paper is the determination of the thermal properties of micrometric layers of electronic devices using a thermoreflectance probe. Unlike classical thermoreflectance methods, the main point of the ...Lire la suite >
The objective of this paper is the determination of the thermal properties of micrometric layers of electronic devices using a thermoreflectance probe. Unlike classical thermoreflectance methods, the main point of the method presented in this paper is to be able to quantify the heating energy (by Joule effect) and the effective temperature response (by calibration). It is then possible to estimate the thermal conductivity (in W m−1 K−1) instead of the thermal diffusivity (in m2 s−1). A semi-analytical thermal 3D-periodic model then enables to identify a few thermal properties of the layers of the device, and in particular the thermal conductivity of the passivation layer. This methodology has been applied to the study of an industrial device containing interconnect test structures made of copper lines on a silicon wafer with a few micrometers BCB (BenzoCycloButene) polymer passivation layer. The BCB thermal conductivity and the metal heat capacity are obtained using this method.< Réduire
Mots clés en anglais
Thermoreflectance
Calibration
Thermal parameters identification
Thermal conductivity
Microelectronic devices
Laser probing
Origine
Importé de halUnités de recherche