Theory of luminescence and optical refrigeration in p-doped semiconductors

G. Rupper, Nai-Hang Kwong, B. Gu, Rudolf Binder

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

We present a microscopic many-body theory of optical refrigeration of p-doped semiconductors. Conceptually, the refrigeration mechanism is the upconversion of pump photons through absorption and subsequent luminescence by electron-hole pairs. The electron-hole pair can be an unbound pair, a pair bound by the attractive Coulomb interation (exciton), or a pair in which the hole is located at an acceptor site. Assuming the electron-hole pairs to be in quasi-thermal equilibrium, our theory calculates its absorption and luminescence spectra within a diagrammatic (real-time) Green's function approach at the self-consistent T-matrix level. The strong on-site Coulomb repulsion of holes at acceptor sites is taken into account via a truncation of the acceptor Fock space, which excludes states with higher than single-hole occupation. The resulting absorption and luminescence spectra are used in a cooling threshold analysis for GaAs that also takes into account other losses into heat. We compare the present results for p-doped GaAs with previous ones obtained for undoped GaAs.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume6907
DOIs
StatePublished - 2008
EventLaser Refrigeration of Solids - San Jose, CA, United States
Duration: Jan 23 2008Jan 24 2008

Other

OtherLaser Refrigeration of Solids
CountryUnited States
CitySan Jose, CA
Period1/23/081/24/08

Fingerprint

Refrigeration
Luminescence
luminescence
Semiconductor materials
Electrons
Heat losses
Green's function
Excitons
Photons
Pumps
Cooling
absorption spectra
time functions
occupation
Green's functions
excitons
pumps
cooling
heat
thresholds

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Rupper, G., Kwong, N-H., Gu, B., & Binder, R. (2008). Theory of luminescence and optical refrigeration in p-doped semiconductors. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 6907). [690705] https://doi.org/10.1117/12.765276

Theory of luminescence and optical refrigeration in p-doped semiconductors. / Rupper, G.; Kwong, Nai-Hang; Gu, B.; Binder, Rudolf.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6907 2008. 690705.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Rupper, G, Kwong, N-H, Gu, B & Binder, R 2008, Theory of luminescence and optical refrigeration in p-doped semiconductors. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 6907, 690705, Laser Refrigeration of Solids, San Jose, CA, United States, 1/23/08. https://doi.org/10.1117/12.765276
Rupper G, Kwong N-H, Gu B, Binder R. Theory of luminescence and optical refrigeration in p-doped semiconductors. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6907. 2008. 690705 https://doi.org/10.1117/12.765276
Rupper, G. ; Kwong, Nai-Hang ; Gu, B. ; Binder, Rudolf. / Theory of luminescence and optical refrigeration in p-doped semiconductors. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6907 2008.
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