Abstract
Silicon-on-insulator (SOI)-like structures to remove the heat from the active silicon layer in thin-film SOI power lateral double diffused MOS field-effect transistors have been recently reported. This paper provides an experimental demonstration of their efficiency. For this purpose, a heater-sensor system based on poly-Si and platinum resistor stripes, respectively, has been integrated in thermal contact with the active silicon layer under study. The thermal resistance reduction due to the contact-through-buried-oxide technique and the SOI-multilayer substrates have been analyzed at steady state using different SOI layer thicknesses and heat source lengths, in accordance with the state-of-the-art. In addition, experimental results are supported by those extracted from numerical simulation of the heater-sensor system.
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