Solid-state and vacuum thermionic energy conversion

A. Shakouri; Z. Bian; R. Singh; Y. Zhang; D. Vashaee; T. E. Humphrey; H. Schmidt; J. M. Zide; G. Zeng; J. H. Bahk; A. C. Gossard; J. E. Bowers; V. Rawat; T. D. Sands; W. Kim; S. Singer; A. Majumdar; P. M. Mayer; R. J. Ram; K. J. Russel; V. Narayanamurti; F. A.M. Koeck; X. Li; J. S. Park; J. R. Smith; G. L. Bilbro; R. F. Davis; Z. Sitar; R. J. Nemanich

Solid-state and vacuum thermionic energy conversion

A. Shakouri, Z. Bian, R. Singh, Y. Zhang, D. Vashaee, T. E. Humphrey, H. Schmidt, J. M. Zide, G. Zeng, J. H. Bahk, A. C. Gossard, J. E. Bowers, V. Rawat, T. D. Sands, W. Kim, S. Singer, A. Majumdar, P. M. Mayer, R. J. Ram, K. J. RusselV. Narayanamurti, F. A.M. Koeck, X. Li, J. S. Park, J. R. Smith, G. L. Bilbro, R. F. Davis, Z. Sitar, R. J. Nemanich

Department of Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (Scopus)

Abstract

A brief overview of the research activities at the Thermionic Energy Conversion (TEC) Center is given. The goal is to achieve direct thermal to electric energy conversion with >20% efficiency and>1W/cm ² power density at a hot side temperature of 300-650C. Thermionic emission in both vacuum and solid-state devices is investigated. In the case of solid-state devices, hot electron filtering using heterostructure barriers is used to increase the thermoelectric power factor. In order to study electron transport above the barriers and lateral momentum conservation in thermionic emission process, the current-voltage characteristic of ballistic transistor structures is investigated. Embedded ErAs nanoparticles and metal/semiconductor multilayers are used to reduce the lattice thermal conductivity. Cross-plane thermoelectric properties and the effective ZT of the thin film are analyzed using the transient Harman technique. Integrated circuit fabrication techniques are used to transfer the n- and p-type thin films on AlN substrates and make power generation modules with hundreds of thin film elements. For vacuum devices, nitrogen-doped diamond and carbon nanotubes are studied for emitters. Sb-doped highly oriented diamond and low electron affinity AlGaN are investigated for collectors. Work functions below 1.6eV and vacuum thermionic power generation at temperatures below 700C have been demonstrated.

Original language	English
Title of host publication	Materials Research Society Symposium Proceedings
Pages	245-260
Number of pages	16
Publication status	Published - 2006
Event	2005 Materials Research Society Fall Meeting - Boston, MA, United States Duration: 2005 Nov 28 → 2005 Dec 1

Publication series

Name	Materials Research Society Symposium Proceedings
Volume	886
ISSN (Print)	0272-9172

Other

Other	2005 Materials Research Society Fall Meeting
Country/Territory	United States
City	Boston, MA
Period	05/11/28 → 05/12/1

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Cite this

Shakouri, A., Bian, Z., Singh, R., Zhang, Y., Vashaee, D., Humphrey, T. E., Schmidt, H., Zide, J. M., Zeng, G., Bahk, J. H., Gossard, A. C., Bowers, J. E., Rawat, V., Sands, T. D., Kim, W., Singer, S., Majumdar, A., Mayer, P. M., Ram, R. J., ... Nemanich, R. J. (2006). Solid-state and vacuum thermionic energy conversion. In Materials Research Society Symposium Proceedings (pp. 245-260). (Materials Research Society Symposium Proceedings; Vol. 886).

@inproceedings{30ea4774aaed44f6bc8fbfdab43bfb7d,

title = "Solid-state and vacuum thermionic energy conversion",

abstract = "A brief overview of the research activities at the Thermionic Energy Conversion (TEC) Center is given. The goal is to achieve direct thermal to electric energy conversion with >20% efficiency and>1W/cm 2 power density at a hot side temperature of 300-650C. Thermionic emission in both vacuum and solid-state devices is investigated. In the case of solid-state devices, hot electron filtering using heterostructure barriers is used to increase the thermoelectric power factor. In order to study electron transport above the barriers and lateral momentum conservation in thermionic emission process, the current-voltage characteristic of ballistic transistor structures is investigated. Embedded ErAs nanoparticles and metal/semiconductor multilayers are used to reduce the lattice thermal conductivity. Cross-plane thermoelectric properties and the effective ZT of the thin film are analyzed using the transient Harman technique. Integrated circuit fabrication techniques are used to transfer the n- and p-type thin films on AlN substrates and make power generation modules with hundreds of thin film elements. For vacuum devices, nitrogen-doped diamond and carbon nanotubes are studied for emitters. Sb-doped highly oriented diamond and low electron affinity AlGaN are investigated for collectors. Work functions below 1.6eV and vacuum thermionic power generation at temperatures below 700C have been demonstrated.",

author = "A. Shakouri and Z. Bian and R. Singh and Y. Zhang and D. Vashaee and Humphrey, {T. E.} and H. Schmidt and Zide, {J. M.} and G. Zeng and Bahk, {J. H.} and Gossard, {A. C.} and Bowers, {J. E.} and V. Rawat and Sands, {T. D.} and W. Kim and S. Singer and A. Majumdar and Mayer, {P. M.} and Ram, {R. J.} and Russel, {K. J.} and V. Narayanamurti and Koeck, {F. A.M.} and X. Li and Park, {J. S.} and Smith, {J. R.} and Bilbro, {G. L.} and Davis, {R. F.} and Z. Sitar and Nemanich, {R. J.}",

year = "2006",

language = "English",

isbn = "1558998403",

series = "Materials Research Society Symposium Proceedings",

pages = "245--260",

booktitle = "Materials Research Society Symposium Proceedings",

note = "2005 Materials Research Society Fall Meeting ; Conference date: 28-11-2005 Through 01-12-2005",

}

Shakouri, A, Bian, Z, Singh, R, Zhang, Y, Vashaee, D, Humphrey, TE, Schmidt, H, Zide, JM, Zeng, G, Bahk, JH, Gossard, AC, Bowers, JE, Rawat, V, Sands, TD, Kim, W, Singer, S, Majumdar, A, Mayer, PM, Ram, RJ, Russel, KJ, Narayanamurti, V, Koeck, FAM, Li, X, Park, JS, Smith, JR, Bilbro, GL, Davis, RF, Sitar, Z & Nemanich, RJ 2006, Solid-state and vacuum thermionic energy conversion. in Materials Research Society Symposium Proceedings. Materials Research Society Symposium Proceedings, vol. 886, pp. 245-260, 2005 Materials Research Society Fall Meeting, Boston, MA, United States, 05/11/28.

TY - GEN

T1 - Solid-state and vacuum thermionic energy conversion

AU - Shakouri, A.

AU - Bian, Z.

AU - Singh, R.

AU - Zhang, Y.

AU - Vashaee, D.

AU - Humphrey, T. E.

AU - Schmidt, H.

AU - Zide, J. M.

AU - Zeng, G.

AU - Bahk, J. H.

AU - Gossard, A. C.

AU - Bowers, J. E.

AU - Rawat, V.

AU - Sands, T. D.

AU - Kim, W.

AU - Singer, S.

AU - Majumdar, A.

AU - Mayer, P. M.

AU - Ram, R. J.

AU - Russel, K. J.

AU - Narayanamurti, V.

AU - Koeck, F. A.M.

AU - Li, X.

AU - Park, J. S.

AU - Smith, J. R.

AU - Bilbro, G. L.

AU - Davis, R. F.

AU - Sitar, Z.

AU - Nemanich, R. J.

PY - 2006

Y1 - 2006

N2 - A brief overview of the research activities at the Thermionic Energy Conversion (TEC) Center is given. The goal is to achieve direct thermal to electric energy conversion with >20% efficiency and>1W/cm 2 power density at a hot side temperature of 300-650C. Thermionic emission in both vacuum and solid-state devices is investigated. In the case of solid-state devices, hot electron filtering using heterostructure barriers is used to increase the thermoelectric power factor. In order to study electron transport above the barriers and lateral momentum conservation in thermionic emission process, the current-voltage characteristic of ballistic transistor structures is investigated. Embedded ErAs nanoparticles and metal/semiconductor multilayers are used to reduce the lattice thermal conductivity. Cross-plane thermoelectric properties and the effective ZT of the thin film are analyzed using the transient Harman technique. Integrated circuit fabrication techniques are used to transfer the n- and p-type thin films on AlN substrates and make power generation modules with hundreds of thin film elements. For vacuum devices, nitrogen-doped diamond and carbon nanotubes are studied for emitters. Sb-doped highly oriented diamond and low electron affinity AlGaN are investigated for collectors. Work functions below 1.6eV and vacuum thermionic power generation at temperatures below 700C have been demonstrated.

AB - A brief overview of the research activities at the Thermionic Energy Conversion (TEC) Center is given. The goal is to achieve direct thermal to electric energy conversion with >20% efficiency and>1W/cm 2 power density at a hot side temperature of 300-650C. Thermionic emission in both vacuum and solid-state devices is investigated. In the case of solid-state devices, hot electron filtering using heterostructure barriers is used to increase the thermoelectric power factor. In order to study electron transport above the barriers and lateral momentum conservation in thermionic emission process, the current-voltage characteristic of ballistic transistor structures is investigated. Embedded ErAs nanoparticles and metal/semiconductor multilayers are used to reduce the lattice thermal conductivity. Cross-plane thermoelectric properties and the effective ZT of the thin film are analyzed using the transient Harman technique. Integrated circuit fabrication techniques are used to transfer the n- and p-type thin films on AlN substrates and make power generation modules with hundreds of thin film elements. For vacuum devices, nitrogen-doped diamond and carbon nanotubes are studied for emitters. Sb-doped highly oriented diamond and low electron affinity AlGaN are investigated for collectors. Work functions below 1.6eV and vacuum thermionic power generation at temperatures below 700C have been demonstrated.

UR - http://www.scopus.com/inward/record.url?scp=33646266949&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33646266949&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:33646266949

SN - 1558998403

SN - 9781558998407

T3 - Materials Research Society Symposium Proceedings

SP - 245

EP - 260

BT - Materials Research Society Symposium Proceedings

T2 - 2005 Materials Research Society Fall Meeting

Y2 - 28 November 2005 through 1 December 2005

ER -

Solid-state and vacuum thermionic energy conversion

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