Transport and capture properties of Auger-generated high-energy carriers in (AlInGa)N quantum well structures | Zendy

A. Nirschl | Zendy; Michael Binder | Zendy; M. Schmid | Zendy; Matthias M. Karow | Zendy; Ines Pietzonka | Zendy; H.J. Lugauer | Zendy; R. Zeisel | Zendy; M. Sabathil | Zendy; Dominique Bougeard | Zendy; Bastian Galler | Zendy

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Transport and capture properties of Auger-generated high-energy carriers in (AlInGa)N quantum well structures

Author(s) -

A. Nirschl,

Michael Binder,

M. Schmid,

Matthias M. Karow,

Ines Pietzonka,

H.J. Lugauer,

R. Zeisel,

M. Sabathil,

Dominique Bougeard,

Bastian Galler

Publication year - 2015

Publication title -

journal of applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.699

H-Index - 319

eISSN - 1089-7550

pISSN - 0021-8979

DOI - 10.1063/1.4927154

Subject(s) - auger effect , auger , quantum well , electron , photoluminescence , atomic physics , carrier lifetime , auger electron spectroscopy , asymmetry , chemistry , materials science , physics , optoelectronics , silicon , optics , nuclear physics , laser , quantum mechanics

Recent photoluminescence experiments presented by M. Binder et al. [Appl. Phys. Lett. 103, 071108 (2013)] demonstrated the visualization of high-energy carriers generated by Auger recombination in (AlInGa)N multi quantum wells. Two fundamental limitations were deduced which reduce the detection efficiency of Auger processes contributing to the reduction in internal quantum efficiency: the transfer probability of these hot electrons and holes in a detection well and the asymmetry in type of Auger recombination. We investigate the transport and capture properties of these high-energy carriers regarding polarization fields, the transfer distance to the generating well, and the number of detection wells. All three factors are shown to have a noticeable impact on the detection of these hot particles. Furthermore, the investigations support the finding that electron-electron-hole exceeds electron-hole-hole Auger recombination if the densities of both carrier types are similar. Overall, the results add to the evidence that Auger processes play an important role in the reduction of efficiency in (AlInGa)N based LEDs

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