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Continuous-band heterostructures: new concept for development of low-loss distributed Bragg reflectors for optoelectronic devices

I. M. SAFONOV1, O. V. SHULIKA1,* , I. A. SUKHOIVANOV2, J. A. ANDRADE-LUCIO2

Affiliation

  1. Lab “Photonics”, Kharkov National University of Radio Electronics, 61166, Lenin av. 14, Kharkov, Ukraine
  2. FIMEE, Universidad de Guanajuato, 215-A, 36730 Salamanca, Gto, México

Abstract

We introduced a new class of heterostructures (HS) that have no discontinuities for one of the band edges and, therefore, called continuous-band heterosructures (CBHs). The promising properties of CBHs are discussed by considering are their optical and electrical characteristics. Our estimations show that CBH-based DBRs provide extremely low series resistance in comparison with conventional DBRs even at low level of doping that can be uniform. Low level of doping leads to low absorption. The absence of composition grading and doping profiles can simplify growth process. Results for some CBHs lattice-matched to GaAs are compared with those for conventional GaAs/AlAs structures..

Keywords

Band discontinuity, Continuous-band heterosructures, Series resistance, DBR, Free-carrier absorption.

Submitted at: May 30, 2007
Accepted at: Aug. 18, 2007

Citation

I. M. SAFONOV, O. V. SHULIKA, I. A. SUKHOIVANOV, J. A. ANDRADE-LUCIO, Continuous-band heterostructures: new concept for development of low-loss distributed Bragg reflectors for optoelectronic devices, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 8, pp. 2404-2407 (2007)