DEMONSTRATION OF A SILICON FIELD-EFFECT TRANSISTOR USING AIN AS THE GATE DIELECTRIC

被引:65
作者
STEVENS, KS [1 ]
KINNIBURGH, M [1 ]
SCHWARTZMAN, AF [1 ]
OHTANI, A [1 ]
BERESFORD, R [1 ]
机构
[1] BROWN UNIV,ADV MAT RES CTR,PROVIDENCE,RI 02912
关键词
D O I
10.1063/1.113715
中图分类号
O59 [应用物理学];
学科分类号
摘要
As a precursor to cointegration of blue and ultraviolet light emitting nitrides with silicon microelectronics, an AlN on Si(111) metal-insulator-semiconductor field effect transistor has been fabricated and characterized. Current-voltage data show the threshold voltage and transconductance to be -0.8 V and 6 ms/mm, respectively, for a 50 nm insulator thickness. The ideal threshold voltage is 0.09 V. From the transconductance, a channel mobility of 45 cm2/V s is inferred. Capacitance versus voltage (C-V) measurements on a 210 nm film showed a flatband voltage of -4.2 V, corresponding to 8×1011cm-2 trapped charges at the interface. Comparison of the experimental high-frequency (1 MHz) C-V plot to the theoretical plot indicates the presence of fast interface states. High-resolution transmission electron microscopy studies showed the AlN/Si(111) interface to be surprisingly well ordered in places, with the large lattice mismatch accommodated via a quasiperiodic array of misfit dislocations.© 1995 American Institute of Physics.
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页码:3179 / 3181
页数:3
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