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Quantum size effect on excitons in zinc-blende GaN/AlN quantum dot

✍ Scribed by C.X. Xia; S.Y. Wei

Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
124 KB
Volume
37
Category
Article
ISSN
0026-2692

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✦ Synopsis

Within the framework of effective-mass approximation, exciton states confined in zinc-blende GaN/AlN quantum dot (QD) are investigated by means of a variational approach, including three-dimensional confinement of the electron and hole in the QD and finite band offsets. Numerical results show that the exciton binding energy and the interband emission energy are both decreased when QD height (or radius) is increased. Our theoretical results are in agreement with the experimental measurements.

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