Presentation 2009-01-15
Reduction of the Base Transit Time in Ultra-thin Graded-Base InP/GaInAs Heterojunction Bipolar Transistor
Takafumi UESAWA, Masayuki YAMADA, Yasuyuki MIYAMOTO, Kazuhito FURUYA,
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Abstract(in English) We report a Monte Carlo analysis of base transit time in ultra-thin and heavily-doped InP/InGaAs HBT's. In ultra-thin base layer less than 20nm, the influence of the plasmon scattering in electron transport is significant. Therefore, it is effective to use graded base in order to sweep out quasi-thermalized electrons. As for graded base, we carried out Monte Carlo Simulation under the condition that the total of graded energy and conduction band discontinuity between base and emitter is constant. Although the best graded energy to minimize base transit time is from 5kT to 7kT, small grading such as 1-2kT is also effective. When 2kT grading is introduced in 20nm base, 40% reduction of base transit time is calculated.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) HeteroJunction Bipolar Transistor(HBT) / Base Transit Time / Graded Base / MonteCarlo / Hole-Plasmon Scattering
Paper # ED2008-212,MW2008-177
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Committee ED
Conference Date 2009/1/7(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Reduction of the Base Transit Time in Ultra-thin Graded-Base InP/GaInAs Heterojunction Bipolar Transistor
Sub Title (in English)
Keyword(1) HeteroJunction Bipolar Transistor(HBT)
Keyword(2) Base Transit Time
Keyword(3) Graded Base
Keyword(4) MonteCarlo
Keyword(5) Hole-Plasmon Scattering
1st Author's Name Takafumi UESAWA
1st Author's Affiliation Graduate School of Science and Engineering, Tokyo Institute of Technology()
2nd Author's Name Masayuki YAMADA
2nd Author's Affiliation Graduate School of Science and Engineering, Tokyo Institute of Technology
3rd Author's Name Yasuyuki MIYAMOTO
3rd Author's Affiliation Graduate School of Science and Engineering, Tokyo Institute of Technology
4th Author's Name Kazuhito FURUYA
4th Author's Affiliation Graduate School of Science and Engineering, Tokyo Institute of Technology
Date 2009-01-15
Paper # ED2008-212,MW2008-177
Volume (vol) vol.108
Number (no) 376
Page pp.pp.-
#Pages 6
Date of Issue