Electronic Energy Levels and Intra-Band Transitions in the Conduction Band of a Zn1-xMgxO /ZnO/Zn1-xMgxO Quantum Well Heterostructures | Chapter 9 | Current Research Progress in Physical Science Vol. 3

 

In the last few years, semiconductor-based quantum well structures have been intensively investigated because of their interesting optical and electrical properties. This paper studies a quantum well heterostructure made up of a zinc oxide (ZnO) thin layer (well) sandwiched between two Zn1-xMgxO layers acting as potential barriers. The material is chemically and thermally stable, non-toxic and abundant in nature. Setting the width of the well to a = 10 nm, the allowed quantum states in the conduction band (CB) and the wave function profiles are examined for two values of magnesium concentration: x = 0.1 and x = 0.2. The calculated wavelengths corresponding to intra-band transitions in the conduction band are in the infrared domain of the electromagnetic spectrum. These wavelengths depend on x, allowing to control the optoelectronic properties of the quantum well by adjusting the concentration x during the growth process. This suggests that it is possible to control the optoelectronic properties of a quantum well by adjusting the concentration during the growth process, in order to obtain the desired wavelength for a semiconductor laser.

 

Author(s) Details

Moustapha Thiam
Laboratoire des Semi-Conducteurs et d’Energie Solaire, Faculté des Sciences et Techniques, Université Cheikh Anta Diop de Dakar, Sénégal.

 

Aminata Diaw
Laboratoire des Semi-Conducteurs et d’Energie Solaire, Faculté des Sciences et Techniques, Université Cheikh Anta Diop de Dakar, Sénégal.

 

Amaky Badiane
Laboratoire des Semi-Conducteurs et d’Energie Solaire, Faculté des Sciences et Techniques, Université Cheikh Anta Diop de Dakar, Sénégal.

 

 

Omar Absatou Niasse
Laboratoire des Semi-Conducteurs et d’Energie Solaire, Faculté des Sciences et Techniques, Université Cheikh Anta Diop de Dakar, Sénégal.

 

 

Amadou Diao
Laboratoire des Semi-Conducteurs et d’Energie Solaire, Faculté des Sciences et Techniques, Université Cheikh Anta Diop de Dakar, Sénégal.

 

Moulaye Diagne
Laboratoire des Semi-Conducteurs et d’Energie Solaire, Faculté des Sciences et Techniques, Université Cheikh Anta Diop de Dakar, Sénégal.

 

Bassirou Lo
Groupe de Physique de la Matière Condensée, Faculté des Sciences et Techniques, Université Cheikh Anta Diop de Dakar, Sénégal.

 

Bassirou Ba
Laboratoire des Semi-Conducteurs et d’Energie Solaire, Faculté des Sciences et Techniques, Université Cheikh Anta Diop de Dakar, Sénégal.

 

Please see the book here:- https://doi.org/10.9734/bpi/crpps/v3/1974