White LED Phosphor Technology Analysis

Table of Contents

1. Introduction

• 1.1 Outline
• 1.2 Investigating Methods
• 1.3 What is a Phosphor?
• 1.4 Developmental Process of Phosphor

2. Fluorescence of a White LED Phosphor

• 2.1 Principle of Fluorescence
• 2.2 Efficiency of a Phosphor
  • 2.2.1 Selection of an Active Material
  • 2.2.2 Selection of the Matrix
  • 2.2.3 Selection of Sensitizer
  • 2.2.4 Energy Transmission in a Phosphor
  • 2.2.5 Human' s Color Perception
  • 2.2.6 Colors of a Phosphor
• 2.3 Synthesis Technology for a Phosphor
  • 2.3.1 Solid-phase Reaction
  • 2.3.2 Liquid-phase Reaction
  • 2.3.3 Gas-phase Reaction
  • 2.3.3.1 Spray Pyrolysis Deposition
  • 2.3.3.2 Ultrasonic Spray Pyrolysis Deposition
  • 2.3.4 Characteristics of fluorescence
  • 2.3.5 Characteristics of fluorescent ion (active agent)

3. Manufacture of White Phosphor

• 3.1 Manufacturing Method
• 3.2 Conditions for White LED Phosphor
• 3.3 Evaluation of a Phosphor
• 3.4 Trend of Development
  • 3.4.1 Development Trend of Blue LED Phosphor
  • 3.4.2 Development Trend of UV LED Phosphor

4 Development and Potentiality of a New Phosphor

• 4.1 Quantum Dot Phosphor
• 4.2 Hybrid Phosphor
• 4.3 Requirements for a New Phosphor
  • 4.3.1 Evaluation of White LED Light Element
  • 4.3.2 Evaluation Items for Reliability of a Phosphor
• 4.4. Potential Application of White LED