GaN????????????

1
GaN????????????
??????????????????? ?
2
?????????(1)

??????
?????
????
????(IC)
3
?????????(2)

• ????
• ????
• ?????

• ??(????)

????????? ?

• ??

??????????????????????
????????????30,?????????
????????????????????!
4
???????
????
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?????
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2009?5??
2050?25??
5
????????????????
?6??????
??
Toyotacorolla ??
????
corolla ??
??
HEVPrius
????
??
6
??????????
7
??????????

• ?????????
• ??????????????????

?? ???? ??? ????
??
???(Inverter) DC??AC
?????????????????
8
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????
9
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???(Inverter)??????
?????????? ????????

• ???????????
• ?????????????(??????)
• ??? ???????

10
?????????

• ????????????MOSFET IGBT
• ????? (Si)
• ????????????????
• ??????????
• ????????????
• SiC(???)?GaN(???)

11
SiC??????????
Mitsubishi's SBD and MOSFETs produced on two
2-inch diameter SiC substrates. The company also
displayed a 4-inch SBD wafer at the same time as
these and its prototype inverters. Credit
Mitsubishi Electric.
12
??11 kW???
??????70,??????????
13
GaN????????
?? ?? aaa (eV) ???? ?????? ????? (cm2/Vs) ?????? (106V/cm) ?????? (107cm/s) ????a (W/cmK) ???
GaN 3.4 9.5 0.22 1200 2000 3.3 2.5 2.1 ??
AlN 6.2 8.5 0.29 ----- ----- 2.0 2.9 ??
Si 1.1 11.8 0.19 1500 0.3 1.0 1.5 ??
GaAs 1.4 12.8 0.067 8500 0.4 2.0 0.5 ??
4H-SiC 3.3 10.0 0.3 1000 3.0 2.0 4.9 ??
diamond 5.5 5.5 0.2 1800 4.0 2.5 20.9 ??
14
GaN??????????????
????
????
???????( gt350C)
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15
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16
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LED????
?????DVD
??????
GaN????????????????????
17

• ????!