標題: Bound-to-continuum absorption with tunneling in type-II nanostructures: a multiband source-radiation approach
作者: Hsieh, Chi-Ti
Chang, Shu-Wei
光電工程學系
Department of Photonics
公開日期: 16-十二月-2013
摘要: We convert calculations of the bound-to-continuum absorption in type-II semiconductor quantum wells into an equivalent source-radiation problem under the effective-mass approximation with band mixing. Perfectly matched layers corresponding to the eight-band Luttinger-Kohn Hamiltonian are introduced to incorporate the effect of quasi-bound states in open regions. In this way, the interplay between quantum tunneling and optical transitions is fully taken into account. From resulted lineshapes of the Fano resonance, we can evaluate tunneling rates of these metastable states and related absorption strengths relative to those of the continuum. The approach here is useful in estimations of carrier extraction rates from type-II nanostructures for photovoltaic applications. (C) 2013 Optical Society of America
URI: http://dx.doi.org/10.1364/OE.21.030778
http://hdl.handle.net/11536/23408
ISSN: 1094-4087
DOI: 10.1364/OE.21.030778
期刊: OPTICS EXPRESS
Volume: 21
Issue: 25
起始頁: 30778
結束頁: 30795
顯示於類別:期刊論文


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  1. 000328575700063.pdf