Chemistry Reference
In-Depth Information
Chapter 6
Rare Earth Nanophosphors in
Light-Emitting Diodes
Chin Yun Tee, Gautom Kumar Das, Yan Zhang, and Timothy T.Y. Tan
School of Chemical and Biomedical Engineering, Nanyang Technological University,
637459 Singapore
tytan@ntu.edu.sg
Rare earth doped materials are vital in many optoelectronics
applications such as solid-state lasers [1], light-emitting diodes
(LEDs) [2], optical fiber amplifiers [3], and photovoltaic devices [4].
Majority of earlier works focus on the rare earth doped materials
of bulk nature. However, with the development of nanotechnology
over the past decades, research and applications of rare earth
materials in optoelectronics have moved from bulk to nanoscale. In
this chapter, recent developments of rare earth nanophosphors in
LEDs, and the effects of various rare earth dopants and particle size
on luminescence properties are discussed.
6.1
Introduction and Overview
Over the past few decades, rare earth materials have been widely
studied due to their unique luminescent properties arisen from
