Title :
Electroluminescence from a Quantum-Well LED using NEGF
Author :
Steiger, Sebastian ; Veprek, Ratko G. ; Witzigmann, Bernd
Author_Institution :
Integrated Syst. Lab., ETH Zurich, Zurich
Abstract :
Nonequilibrium Green´s functions (NEGF) are employed to model carrier transport and luminescence in a single-quantum-well light-emitting diode (LED). The sound theoretical formalism allows for a consistent description of coherence loss as well as fundamental scattering mechanisms and reveals details about physical phenomena such as the quantum-confined Stark and Franz-Keldysh effects, tunneling and carrier capture. A comparison to semiclassical results is made and similarities as well as differences are highlighted.
Keywords :
Green´s function methods; electroluminescence; light emitting diodes; quantum well devices; tunnelling; Franz-Keldysh effect; carrier transport; coherence loss; electroluminescence; fundamental scattering mechanism; light-emitting diode; nonequilibrium Green´s function; quantum-confined Stark; single-quantum-well LED; tunneling; Acoustic scattering; Coherence; Electroluminescence; Green´s function methods; Light emitting diodes; Light scattering; Luminescence; Particle scattering; Quantum mechanics; Quantum wells;
Conference_Titel :
Computational Electronics, 2009. IWCE '09. 13th International Workshop on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3925-6
Electronic_ISBN :
978-1-4244-3927-0
DOI :
10.1109/IWCE.2009.5091112
