Optical Semiconductors Properties

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12OVP ZK 2 2+0 Czech
Jiří Oswald (guarantor)
Jiří Oswald (guarantor)
Department of Physical Electronics

Recapitulation of solid materials physics (optical translation, excitons, electron-hole plasma), non-linear optical properties, luminescence, recombination in semiconductor, stimulation emission, examples of practical materials.


Basic course of Quantum Physics and Solid State Physics.

Syllabus of lectures:

1. Allowed and forbidden transitions, direct and indirect optical transitions, selection rules.

2. Excitons, their manifestation in optical absorption, Wannier exciton, symmetries.

3. Nonlinear optical properties of bulk (3D) semiconductors, classification, examples. Effects of strong excitation: exciton complexes, Coulomb interaction screening, electron-hole plasma, band gap renormalization.

4. Two-photon absorption, selection rules, two-photon spectroscopy and its application, experimental techniques.

5. Low-dimensional semiconductor structures, quantum restriction effect, density of states in 2D, 1D and 0D structures, linear and nonlinear optical properties.

6. Luminescence, quantum efficiency, kinetic approach, Frank-Condon principle, thermal quenching of luminescence.

7. Radiative recombination channels in semiconductors, effect of various excitons in luminescence spectra of 3D crystal and nanocrystal. Example: luminescence of 3D silicon, its applications, silicon nanocrystal luminescence.

8. Stimulated emission in semiconductors, basic concepts, experimental techniques for optical gain measurements, the ways towards a silicon laser.

9. Examples of optical properties in 2D, 1D and 0D semiconductor nanostructures of A(III)-B(V) and A(II)-B(IV) type.

10. Luminescence of quantum wells, quantum wells of I and II type.

11. Luminescence of quantum dots.

12. Applications of optical properties of nanostructures for real optoelectronic components.

Syllabus of tutorials:
Study Objective:

Knowledge: basic and advanced knowledge of optical properties of semiconductors and semiconductor nanostructures,

especially of nonlinear optical properties, two-photon absorption, luminiscence, stimulated emission.

Skills: advanced orientation in the field of optical properties of semiconductors and semiconductor nanostructures, escpecially nonlinear optical properties, two-photon absorption, luminiscence, and stimulated emission. Applications and understanding of basic principles, practical demonstration of principles on selected specific problems.

Study materials:

Compulsory literature:

[1] N. Peyghambarian, S.W. Koch, A. Mysyrowicz, Introduction to Semiconductor Optics, Prentice Hall, Englewood Cliffs, New Jersey, 1993.

[2] S.V. Gaponenko, Optical Properties of Semiconductor Nanocrystals, Cambridge University Press, Cambridge, 1998.

Supplementary literature:

[3] D. Bimberg, M. Grundmann, and N.N. Ledentsov, Quantum dots heterostructures, Wiley, Chichester, 1999.

[4] M. Grundmann (Ed.): Nano-Optoelectronics, Springer-Verlag, Berlin Heidelberg, 2002.

[5] E.Smith, G. Dent, Modern Raman Spectroscopy - A Practical Approach. Wiley & Sons Ltd. UK, 2005.

Time-table for winter semester 2020/2021:
Time-table is not available yet
Time-table for summer semester 2020/2021:
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The course is a part of the following study plans:
Data valid to 2021-03-02
For updated information see http://bilakniha.cvut.cz/en/predmet24710905.html