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- Title
Size-dependent electronic and optical properties of an exciton in CdSe/CdS/CdSe/CdS multilayer spherical quantum dot.
- Authors
Salini, K.; Suseel Rahul, K.; Mathew, Vincent
- Abstract
The electronic and optical properties of a single exciton in a CdSe/CdS/CdSe/CdS quantum dot is studied by using effective mass approximation with parabolic confinement. The Coloumbic interaction between electron and hole is included by Hartree potential. A self-consistent technique is used to calculate the energy eigenvalue and wavefunction of exciton. Based on this approximation we investigate the effect of core size, shell thickness, well width on exciton binding energy, absorption spectra, and oscillator strength. The results provide the tuning possibility of electronic and optical properties of multilayer quantum dot with layer thickness.
- Subjects
ELECTRONIC structure; EXCITON theory; OPTICAL properties of cadmium sulfide; OPTICAL properties of cadmium selenide; OPTICAL multilayers; QUANTUM dots; ABSORPTION spectra
- Publication
Applied Physics A: Materials Science & Processing, 2014, Vol 116, Issue 3, p1371
- ISSN
0947-8396
- Publication type
Article
- DOI
10.1007/s00339-014-8235-4