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Proceedings Paper

Intracavity double diode structures with GaInP barrier layers for thermophotonic cooling
Author(s): Jonna Tiira; Ivan Radevici; Tuomas Haggren; Teemu Hakkarainen; Pyry Kivisaari; Jari Lyytikäinen; Arto Aho; Antti Tukiainen; Mircea Guina; Jani Oksanen
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Paper Abstract

Optical cooling of semiconductors has recently been demonstrated both for optically pumped CdS nanobelts and for electrically injected GaInAsSb LEDs at very low powers. To enable cooling at larger power and to understand and overcome the main obstacles in optical cooling of conventional semiconductor structures, we study thermophotonic (TPX) heat transport in cavity coupled light emitters. Our structures consist of a double heterojunction (DHJ) LED with a GaAs active layer and a corresponding DHJ or a p-n-homojunction photodiode, enclosed within a single semiconductor cavity to eliminate the light extraction challenges. Our presently studied double diode structures (DDS) use GaInP barriers around the GaAs active layer instead of the AlGaAs barriers used in our previous structures. We characterize our updated double diode structures by four point probe IV- measurements and measure how the material modifications affect the recombination parameters and coupling quantum efficiencies in the structures. The coupling quantum efficiency of the new devices with InGaP barrier layers is found to be approximately 10 % larger than for the structures with AlGaAs barriers at the point of maximum efficiency.

Paper Details

Date Published: 17 February 2017
PDF: 7 pages
Proc. SPIE 10121, Optical and Electronic Cooling of Solids II, 1012109 (17 February 2017); doi: 10.1117/12.2250843
Show Author Affiliations
Jonna Tiira, Aalto Univ. (Finland)
Ivan Radevici, Aalto Univ. (Finland)
Tuomas Haggren, Aalto Univ. (Finland)
Teemu Hakkarainen, Tampere Univ. of Technology (Finland)
Pyry Kivisaari, Lund Univ. (Finland)
Jari Lyytikäinen, Tampere Univ. of Technology (Finland)
Arto Aho, Tampere Univ. of Technology (Finland)
Antti Tukiainen, Tampere Univ. of Technology (Finland)
Mircea Guina, Tampere Univ. of Technology (Finland)
Jani Oksanen, Aalto Univ. (Finland)

Published in SPIE Proceedings Vol. 10121:
Optical and Electronic Cooling of Solids II
Richard I. Epstein; Denis V. Seletskiy; Mansoor Sheik-Bahae, Editor(s)

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