Photoluminescence from GaAs nanostructures | Zendy

Gurmessa Alemu | Zendy; Melese Getnet | Zendy; Veerayya Choudary Lingamaneni | Zendy; Shewamare Sisay | Zendy

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Photoluminescence from GaAs nanostructures

Author(s) -

Gurmessa Alemu,

Melese Getnet,

Veerayya Choudary Lingamaneni,

Shewamare Sisay

Publication year - 2015

Publication title -

international journal of the physical sciences

Language(s) - English

Resource type - Journals

ISSN - 1992-1950

DOI - 10.5897/ijps2014.4245

Subject(s) - photoluminescence , quantum dot , nanostructure , materials science , excitation , quenching (fluorescence) , semiconductor , intensity (physics) , photon energy , thermal , wavelength , photoluminescence excitation , optoelectronics , photon , nanotechnology , condensed matter physics , computational physics , physics , optics , quantum mechanics , fluorescence , thermodynamics

The confinement properties of semiconductor nanostructures have promising potential in technological application. The main objective of this study is to describe the dependence of Photoluminescence (PL) intensity on different parameters like temperature, excitation wavelength, time and photon energy of GaAs quantum dots (QDs). The model equations are numerically analyzed and simulated with matlab and FORTRAN codes. The experimental fitted values and physical properties of materials are used as data source for our simulation. The result shows that at low temperature the peak is quite sharp, as temperature increases the PL intensity decreases and get quenched at particular thermal energy. Key words: Photoluminescence (PL) intensity, GaAs quantum dots, nanostructures, quantum confinement, thermal quenching energy.

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