This book addresses one of the most compelling frontiers of contemporary science: the behavior of quantum systems at the nanoscale. In these regimes, where dimensions approach the de Broglie wavelength of charge carriers, matter reveals phenomena unattainable in bulk form, and entirely new avenues for technology emerge.Particular attention is devoted to low-dimensional structures quantum wells, wires, and dots together with advanced compound semiconductors of the III V and III N families, and metallic clusters whose properties are shaped by confinement and correlation effects. These systems constitute the essential building blocks of modern optoelectronics, quantum photonics, and bioimaging.The chapters herein endeavor to present, with both rigor and clarity, the principles that govern confinement, transport, and optical response at the nanoscale. Special emphasis is placed upon absorption and emission processes, recombination dynamics, and the modulation of el
ectronic states under external fields, temperature, and pressure. In doing so, the work aspires to illuminate not only the physical foundations but also the prospective applications in energy conversion, communication, and sensing.Authored by researchers of significant expertise, the contributions form a coherent account of progress in this swiftly advancing field. It is my conviction that this eBook will serve the scientific community not merely as a record of current achievements but as an invitation to further inquiry and discovery in the study of quantum-enabled devices.
Chapter 1. Fascinating new generation core-shell quantum dots.- Chapter 2. Donor interaction physics of semiconductor QD nano-spheres.- Chapter 3. Normalized Exciton Binding Energy in Cylindrical Nanostructures: Influences of Quantum Confinement and LO Phonon Contributions.- Chapter 4. The nonlinear optical rectification coefficient in a MSQD: effects of external perturbation and the Kratzer confinement potential.- Chapter 5. Hydrostatic Pressure and Temperature Effects on Nonlinear Optical Rectification in Tetrapod Quantum Dots.- Chapter 6. Absorption coefficient of a delta-doped layer inside three quantum wells subjected to an electric field.- Chapter 7. Stark-shift, binding energy, diamagnetic response, polarizability and dipole moment of shallow donor-impurity in GaAs Core/Shell quantum disk.- Chapter 8. Performance of III-V-based Quantum Well Intermediate Band Solar Cells.- Chapter 9. Recombination Dynamics and Radiative Lifetimes in III-N Semiconductor Photonic Structur
es.- Chapter 10. Optical Absorption and Oscillator Strength Modulation in GaAs-Based Quantum Dots.- Chapter 11. Kratzer Potential"s Impact on Optical Absorption in Multilayer Quantum Dots.
