| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Improving Breakdown Behavior by Substrate Bias in a Novel Double Epi-layer Lateral Double Diffused MOS Transistor |
| LI Qi**, WANG Wei-Dong, LIU Yun, WEI Xue-Ming |
Guangxi Key Laboratory of Wireless Wideband Communication & Signal Processing, Guilin University of Electronic Technology, Guilin 541004
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| Cite this article: |
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WEI Xue-Ming, WANG Wei-Dong, LIU Yun et al 2012 Chin. Phys. Lett. 29 027303 |
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Abstract A new lateral double diffused MOS (LDMOS) transistor with a double epitaxial layer formed by an n-type substrate and a p-type epitaxial layer is reported (DEL LDMOS). The mechanism of the improved breakdown characteristic is that the high electric field around the drain is reduced by substrate reverse bias, which causes the redistribution of the bulk electric field in the drift region, and the vertical blocking voltage is shared by the drain side and the source side. The numerical results indicate that the trade-off between breakdown voltage and on-resistance of the proposed device is improved greatly in comparison to that of the conventional LDMOS.
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| Keywords:
73.40.Qv
71.20.Mq
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Received: 18 September 2011
Published: 11 March 2012
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| PACS: |
73.40.Qv
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(Metal-insulator-semiconductor structures (including semiconductor-to-insulator))
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71.20.Mq
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(Elemental semiconductors)
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