Possible cooling by resonant Fowler-Nordheim emission

A method of electronic refrigeration based on resonant Fowler-Nordheim emission is analyzed. In this method, a bulk emitter is covered with a-few-nm-thick film of a widegap semiconductor, creating an intermediate step between electron energies in the emitter and in vacuum. An external electric field tilts this potential profile, forming a quantum well at the semiconductor-vacuum boundary. Alignment of its lowest two-dimensional subband with the energy of the hottest electrons of the emitter (a few kBT above the Fermi level) leads to a resonant, selective emission of these electrons, providing emitter cooling. Calculations show that cooling power of at least 30 W/cm2, and temperatures down to 10 K may be achieved using this effect.

[1]  Purcell,et al.  Field-emission electron spectroscopy of single-atom tips. , 1992, Physical review letters.

[2]  Y. Kryuchenko,et al.  Field emission from structures with quantum wells , 1993 .

[3]  Purcell,et al.  Field emission from narrow bands above the Fermi level of nanometer-scale objects. , 1994, Physical review. B, Condensed matter.

[4]  Kevin F. Brennan,et al.  Quantum Semiconductor Structures , 1992 .

[5]  Gerald Lucovsky,et al.  Tunneling currents through ultrathin oxide/nitride dual layer gate dielectrics for advanced microelectronic devices , 1998 .

[6]  Konstantin K. Likharev,et al.  Layered tunnel barriers for nonvolatile memory devices , 1998 .

[7]  Hal Edwards,et al.  A quantum‐dot refrigerator , 1993 .

[8]  G. Gildenblat,et al.  Resonant tunneling emitter quantum mechanically coupled to a vacuum gap , 1997 .

[9]  W. B. Nottingham.  Remarks on Energy Losses Attending Thermionic Emission of Electrons from Metals , 1941 .

[10]  M. Lenzlinger,et al.  Fowler‐Nordheim Tunneling into Thermally Grown SiO2 , 1969 .

[11]  K. H. Gundlach,et al.  Zur berechnung des tunnelstroms durch eine trapezförmige potentialstufe , 1966 .

[12]  Ali Shakouri,et al.  Thermionic emission cooling in single barrier heterostructures , 1999 .

[13]  D. V. Averin,et al.  Efficient Peltier refrigeration by a pair of normal metal/insulator/superconductor junctions , 1996 .

[14]  R. Fischer,et al.  Resonant Fowler–Nordheim tunneling in n−GaAs‐undoped AlxGa1−xAs‐n+GaAs capacitors , 1984 .