- Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi
- Vol: 11 Issue: 4
- Polarization Effects on Intersubband Absorption in GaN/ZnGeN2 Quantum Wells
Polarization Effects on Intersubband Absorption in GaN/ZnGeN2 Quantum Wells
Authors : Raşit Çakir
Pages : 2772-2781
Doi:10.21597/jist.955530
View : 10 | Download : 4
Publication Date : 2021-12-15
Article Type : Research
Abstract :The effects of spontaneous and piezoelectric polarizations on the intersubband absorption in the GaN/ZnGeN2 quantum well are studied. Schrödinger and Poisson equations are solved self-consistently. The first order linear and third order nonlinear absorption coefficients of the intersubband transitions originating from ground and first excited states are calculated. We have presented the results relative to polarization, doping level and well length. The polarization causes the absorption peak to be reduced and shifted to higher energies, and the nonlinear absorption to become weaker, but this effect is slightly reversed with doping. The effect of polarization or doping increases with well length, but they are observed after 26 Å.Keywords : Quantum well, GaN, ZnGeN2, piezoelectric polarization, intersubband absorption