Journal article
A highly tunable heterostructure metal-semiconductor-metal capacitor utilizing embedded 2-dimensional charge
Applied physics letters, v 100(15), pp 153505-153505-3
09 Apr 2012
Abstract
We report on a variable capacitor that is formed between Schottky contacts and the two dimensional electron gas (2DEG) in a planar metal-semiconductor-metal structure. Device capacitance at low bias is twice the series capacitance of anode and cathode, enhancing to a maximum value, C-max, at a threshold voltage, before reaching a minimum, C-min, lower than the geometric capacitance of the coplanar contacts, thus resulting in ultra high C-max/C-min tuning ratio. Sensitivity, the normalized change of capacitance with voltage, is also very large. The dense reservoir of the 2DEG charge maintained between contacts is shown to be responsible for this remarkable performance. VC 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3702466]
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Details
- Title
- A highly tunable heterostructure metal-semiconductor-metal capacitor utilizing embedded 2-dimensional charge
- Creators
- P. Dianat - Drexel UniversityR. W. Prusak - Drexel Univ, Dept Elect & Comp Engn, Philadelphia, PA 19104 USAE. Gallo - Drexel Univ, Dept Elect & Comp Engn, Philadelphia, PA 19104 USAA. Cola - Natl Council Res IMM CNR, Inst Microelect & Microsyst, Unit Lecce, I-73100 Lecce, ItalyA. Persano - Natl Council Res IMM CNR, Inst Microelect & Microsyst, Unit Lecce, I-73100 Lecce, ItalyF. Quaranta - Natl Council Res IMM CNR, Inst Microelect & Microsyst, Unit Lecce, I-73100 Lecce, ItalyB. Nabet - Drexel University
- Publication Details
- Applied physics letters, v 100(15), pp 153505-153505-3
- Publisher
- American Institute of Physics
- Number of pages
- 3
- Grant note
- ECCS-0702716 / NSF; National Science Foundation (NSF) ASEE-ONR; Office of Naval Research
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Electrical and Computer Engineering
- Web of Science ID
- WOS:000303128000079
- Scopus ID
- 2-s2.0-84859800795
- Other Identifier
- 991019167793804721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Physics, Applied