Dark current density;
intersubband transitions;
photocurrent spectra;
quantum dot infrared photodetector;
response wavelength;
valance subband structure;
DARK CURRENT;
EMISSION;
HOLES;
D O I:
10.1109/JQE.2013.2279566
中图分类号:
TM [电工技术];
TN [电子技术、通信技术];
学科分类号:
0808 ;
0809 ;
摘要:
A theoretical analysis for resonant cavity enhanced p-type quantum dot (QD) infrared photo-detector that uses intervalence subband transitions in InxGa1-xAs/GaAs QDs is presented. Multiband effective mass k.p model with the strain effect is used to calculate valance subband energy levels. Photocurrent spectra, response wavelength, and dark current density of QD infrared detector have been calculated. The calculations have been performed for a wide range of dot sizes, compositions, dot height, bias voltages, and temperatures. The effect of QD height, radius, and composition on the response of the photodetectors has been analyzed and some criteria for performance improvement have been suggested.
机构:
Univ Michigan, Dept Elect Engn & Comp Sci, Solid State Elect Lab, Ann Arbor, MI 48109 USAUniv Michigan, Dept Elect Engn & Comp Sci, Solid State Elect Lab, Ann Arbor, MI 48109 USA
Su, XH
Chakrabarti, S
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机构:Univ Michigan, Dept Elect Engn & Comp Sci, Solid State Elect Lab, Ann Arbor, MI 48109 USA
Chakrabarti, S
Bhattacharya, P
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机构:Univ Michigan, Dept Elect Engn & Comp Sci, Solid State Elect Lab, Ann Arbor, MI 48109 USA
Bhattacharya, P
Ariyawansa, G
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机构:Univ Michigan, Dept Elect Engn & Comp Sci, Solid State Elect Lab, Ann Arbor, MI 48109 USA
Ariyawansa, G
Perera, AGU
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机构:Univ Michigan, Dept Elect Engn & Comp Sci, Solid State Elect Lab, Ann Arbor, MI 48109 USA
机构:
Natl Res Council Canada, Inst Microstruct Sci, Nortel Networks, Ottawa, ON K1A 0R6, CanadaNatl Res Council Canada, Inst Microstruct Sci, Nortel Networks, Ottawa, ON K1A 0R6, Canada
Shen, A
Liu, HC
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机构:Natl Res Council Canada, Inst Microstruct Sci, Nortel Networks, Ottawa, ON K1A 0R6, Canada
Liu, HC
Gao, M
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机构:Natl Res Council Canada, Inst Microstruct Sci, Nortel Networks, Ottawa, ON K1A 0R6, Canada
Gao, M
Dupont, E
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机构:Natl Res Council Canada, Inst Microstruct Sci, Nortel Networks, Ottawa, ON K1A 0R6, Canada
Dupont, E
Buchanan, M
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机构:Natl Res Council Canada, Inst Microstruct Sci, Nortel Networks, Ottawa, ON K1A 0R6, Canada
Buchanan, M
Ehret, J
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机构:Natl Res Council Canada, Inst Microstruct Sci, Nortel Networks, Ottawa, ON K1A 0R6, Canada
Ehret, J
Brown, GJ
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机构:Natl Res Council Canada, Inst Microstruct Sci, Nortel Networks, Ottawa, ON K1A 0R6, Canada
Brown, GJ
Szmulowicz, F
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机构:Natl Res Council Canada, Inst Microstruct Sci, Nortel Networks, Ottawa, ON K1A 0R6, Canada