Simulation of Organic/Inorganic Quantum Dot Light Emitting Diodes

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Alam, Mohammad Hossein | 2017

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 50456 (05)
University: Sharif University of Technology
Department: Electrical Engineering
Advisor(s): Faez, Rahim
Abstract:
The light emitting diodes is composed of an electron transport layer and hole transport layer. The electrons and holes go to the middle region called active region through these transmit regions, and they emit light from themselves by recombination in this area. In our structure, the active region consists of quantum dots. The emitted light characteristics depend on these dots to great extent. In this thesis, we first describe the processes in this type of device, and then we will review the well-known structures that have been reported so far. In chapter 4 discusses the important characteristics of the active region, including the size of the quantum dots and the wetting layer, and we observe that there is a strong dependence on the wavelength of light emitted on size. In chapter 5 we simulated the structure of light- emitting diode based on quantum dots, and we looked at the important graphs of these device, including the output spectrum. In that chapter with using the AlGaAs layer, we get more confinement on the carriers in the active region, and we see 1.5 times the output power. At the end of Chapter 5, we also analyzed the effect of organic materials on the intensity of emitted light
Keywords:
Quantum Dots ; Light-Emitting Diode (LED)Drivers ; Wet Layer ; Output Spectrom ; Organic Material

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