摘要:
A semiconductor workpiece including a substrate 10, a relaxed buffer layer 14, 18 including a graded portion formed on the substrate, and at least one strained transitional layer 16 within the graded portion of the relaxed buffer layer 14, 18 and method of manufacturing the same. The at least one strained transitional layer 16 reduces an amount of workpiece bow due to differential coefficient of thermal expansion (CTE) contraction of the relaxed buffer layer 14, 18 relative to CTE contraction of the substrate 10.
摘要:
Structure (1) pour des applications radiofréquences comprenant : • un substrat support (2) semi-conducteur ; • une couche de piégeage (3) disposée sur le substrat support (2) ; la couche de piégeage (3) étant caractérisée en ce qu'elle comprend une densité de défauts supérieure à une densité de défauts prédéterminée ; la densité de défauts prédéterminée est la densité de défauts au-delà de laquelle la résistivité électrique de la couche de piégeage (3) est supérieure ou égale à 10kohm.cm sur une gamme de température [-20°C ; +120°C].
摘要:
The invention relates to an electronic device for radiofrequency or power applications, comprising a semiconductor layer supporting electronic components on a support substrate, wherein the support substrate comprises a base layer having a thermal conductivity of at least 30 W/mK and a superficial layer having a thickness of at least 5 μm, the superficial layer having an electrical resistivity of at least 3000 Ohm·cm and a thermal conductivity of at least 30 W/mK. The invention also relates to two processes for manufacturing such a device.
摘要:
The invention relates to a structure (1) for radiofrequency applications which includes: a semiconducting supporting substrate (2); a trapping layer (3) arranged on the supporting substrate (2); the trapping layer (3) being characterised in that it includes a higher defect density than a predetermined defect density; the predetermined defect density is the defect density beyond which the electric resistivity of the trapping layer (3) is no lower than 10 Kohm.cm over a temperature range of [-20 °C; +120 °C].