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Mori et al., 2000 - Google Patents

6.5 kV ultra soft & fast recovery diode (U-SFD) with high reverse recovery capability

Mori et al., 2000

Document ID
9590590527927074940
Author
Mori M
Kobayashi H
Yasuda Y
Publication year
Publication venue
12th International Symposium on Power Semiconductor Devices & ICs. Proceedings (Cat. No. 00CH37094)

External Links

Snippet

This paper presents a 65 kV ultra soft and fast recovery diode (U-SFD) for a high power IGBT module. The U-SFD has shallow p type Schottky junctions and deep pn junctions. A high blocking voltage of 6.8 kV even at-40/spl deg/C and a low forward voltage drop (V/sub F/) Of …
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    • H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof; Multistep manufacturing processes therefor
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    • H01L29/0615—Semiconductor bodies; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse biased devices by the doping profile or the shape or the arrangement of the PN junction, or with supplementary regions, e.g. junction termination extension [JTE]
    • H01L29/0619—Semiconductor bodies; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse biased devices by the doping profile or the shape or the arrangement of the PN junction, or with supplementary regions, e.g. junction termination extension [JTE] with a supplementary region doped oppositely to or in rectifying contact with the semiconductor containing or contacting region, e.g. guard rings with PN or Schottky junction
    • H01L29/0623—Buried supplementary region, e.g. buried guard ring
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    • H01L29/7397—Vertical transistors, e.g. vertical IGBT with a non planar surface, e.g. with a non planar gate or with a trench or recess or pillar in the surface of the emitter, base or collector region for improving current density or short circuiting the emitter and base regions and a gate structure lying on a slanted or vertical surface or formed in a groove, e.g. trench gate IGBT
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    • H01L29/66—Types of semiconductor device; Multistep manufacturing processes therefor
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    • H01L29/66—Types of semiconductor device; Multistep manufacturing processes therefor
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    • H01L29/772—Field effect transistors
    • H01L29/78—Field effect transistors with field effect produced by an insulated gate
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    • H01L29/66234—Bipolar junction transistors [BJT]
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