Theoretical modeling of quantum dot infrared photodetectors: Modeling and optimization of self-assembled quantum dot infrared photodetectors using non-equilibrium Green's function - Softcover

Naser, Mohamed

Softcover

ISBN 10: 3639334477 ISBN 13: 9783639334470

Publisher: VDM Verlag Dr. Müller, 2011

Synopsis

Quantum dot infrared photodetectors (QDIPs) have emerged as a promising technology in the mid- and far-infrared (3-25 ?m) for applications in medical and environmental sensing. In this book, a detailed theoretical model based on non-equilibrium Green's functions (NEGF) has been developed to electrically and optically characterize different QDIP structures. The advantage of the model over previous developed classical and semi-classical models is that it fairly describes quantum transport phenomenon playing a significant role in the performance of such nano-devices and considers the microscopic device structure. The model is fully quantum mechanical, including interactions with the lattice and with the light. The differential equation of the retarded Green's function is solved numerically using the method of finite differences. The NEGF model calculates the localized density of states, the operating wavelengths for intersubband transitions, the responsivity, the dark and photocurrent, and the detectivity at different design parameters. The model can be used as a tool for characterization and optimization of QDIPs.

About this title

About the Author

Dr. Mohamed A. Naser was born in Cairo, Egypt in 1977. He received his Ph.D. degree in Eng. Physics at McMaster University, Hamilton, ON, Canada for his research on theoretical modeling of quantum dot infrared photodetectors. His current research is development and testing of algorithms for quantitative molecular imaging in small animals.

Edition details

• Publisher: VDM Verlag Dr. Müller
• Publication date: 2011
• ISBN 10: 3639334477
• ISBN 13: 9783639334470
• Binding: Paperback
• Language: English
• Number of pages: 196