Comparative study of electroabsorption in InGaN∕GaN quantum zigzag heterostructures with polarization-induced electric fields

Emre Sari, Tuncay Ozel, Aslı Koc, Jin-Woo Ju, Haeng-Keun Ahn, In-Hwan Lee, Jong-Hyeob Baek, Hilmi Volkan Demir
2008 Applied Physics Letters  
We present a comparative study on InGaN / GaN quantum zigzag structures embedded in p-i-n diode architecture that exhibit blue-shifting electroabsorption in the blue when an electric field is externally applied to compensate for the polarization-induced electric field across the wells. With the polarization breaking their symmetry, the same InGaN / GaN quantum structures redshift their absorption edge when the external field is applied in the same direction as the well polarization. Both
more » ... tionally and experimentally, we investigate the effects of polarization on electroabsorption by varying compositional content and structural parameters and demonstrate that electroabsorption grows stronger with weaker polarization in these multiple quantum well modulators.
doi:10.1063/1.2931696 fatcat:rt2ygdq7zjhatnniij7za3nu34