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Light absorption and many‐particle electron–phonon interactions in intermediate band quantum well solar cells
Author(s) -
Milde Frank,
Weber Carsten,
Knorr Andreas
Publication year - 2015
Publication title -
progress in photovoltaics: research and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.286
H-Index - 131
eISSN - 1099-159X
pISSN - 1062-7995
DOI - 10.1002/pip.2537
Subject(s) - phonon , relaxation (psychology) , condensed matter physics , electron , substrate (aquarium) , excitation , solar cell , absorption (acoustics) , quantum well , scattering , physics , carrier scattering , multiple exciton generation , materials science , optoelectronics , band gap , quantum mechanics , optics , laser , psychology , social psychology , oceanography , geology
The carrier dynamics under solar excitation in the third generation AlAs‐Ga 0.27 In 0.73 As quantum well solar cell on an InP substrate is theoretically investigated. The quantum well shows a significantly higher carrier occupation compared with that of a pure bulk sample. Furthermore, the influence of carrier scattering via the interaction with a bath of longitudinal optical phonons stemming from the substrate is taken into account, showing strong intraband and interband relaxation of the carrier distribution toward the lowest subband states. Copyright © 2014 John Wiley & Sons, Ltd.