Download Solid-state Lighting and Displays.

Title of Project: Solid-state Lighting and Displays.
Name of Supervisor : Teo Kie Leong
Contact Details:
Dept. of Electrical & Computer Engineering
National University of Singapore
4 Engineering Drive 3
Singapore 117576
Phone: (+65)6516-4543
Fax: (+65)6779-1103
Office: E2-03-30
E-mail: [email protected]
Short Description
Today the mainstream solid-state lighting (SSL) still relies on inorganic
semiconductor technology; for example, InGaN/GaN quantum well (QW) based LED
plus phosphors. III-nitride based LEDs critically require high crystal quality of the
epitaxial layers, and therefore are not satisfactory for general lighting in terms of both
price and efficiency. We intend to address this problem by adopting a new strategy
that makes use of excitonic emission in different low dimensional semiconductors
(LDS) such as 2D-QWs, 1D-nanowires (NWs, or quantum wires) and 0 D-nanocrystal
quantum dots (QDs). All these low dimensional semiconductor structures (LDSS)
serve as basic building blocks for light emitting devices, but possess different
characteristics. We will make use of the distinctive characteristics of these LDS
to design and demonstrate new device structures and therefore achieve device
performance previously unattainable. The project involves design and fabrication of
alternative excitonic architectures for LED applications with higher
performance/cost ratio, study the fundamental physics underlying the excitonic
energy transfer between different component materials and improvement of energy
efficiency and spectral quality of LEDs by taking advantage of different
characteristics of inorganic QWs, NWs and QDs.