8.2 Electronic and optical properties of quantum dots
2 min read•Last Updated on August 9, 2024
Quantum dots are tiny semiconductor particles with unique electronic and optical properties. Their behavior is governed by quantum confinement, which restricts electron movement and creates discrete energy levels. This leads to size-dependent emission and tunable bandgaps.
These nanostructures exhibit fascinating phenomena like Stokes shift, blinking, and Auger recombination. Understanding these properties is crucial for developing applications in displays, solar cells, and biomedical imaging. Quantum dots offer exciting possibilities for next-gen technologies.
Quantum Confinement and Bandgap Engineering
Fundamentals of Quantum Confinement
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Top images from around the web for Fundamentals of Quantum Confinement
Frontiers | Quantum Dots Synthesis Through Direct Laser Patterning: A Review View original
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Quantum-confined superfluid reactions - Chemical Science (RSC Publishing) DOI:10.1039/D0SC03574B View original
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Frontiers | Quantum Dots Synthesis Through Direct Laser Patterning: A Review View original
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Quantum-confined superfluid reactions - Chemical Science (RSC Publishing) DOI:10.1039/D0SC03574B View original
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Quantum confinement occurs when particle size approaches de Broglie wavelength
Restricts electron movement in one or more dimensions
Leads to discrete energy levels instead of continuous bands
Affects electronic and optical properties of nanostructures
Strength of confinement depends on particle size and material properties
Bandgap Engineering and Size-Dependent Emission
Bandgap engineering involves manipulating electronic band structure
Allows tuning of optical and electrical properties
Size-dependent emission results from quantum confinement effects