17-Henry_Vo_Light Emitting Diodes

17-Henry_Vo_Light Emitting Diodes - Phosphorescent OLED...

Info iconThis preview shows pages 1–15. Sign up to view the full content.

View Full Document Right Arrow Icon
Light Emitting Diodes ECE3080 HENRY MINH VO
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
What is a diode?
Background image of page 2
History of LED Created in the mid 1920s by Russian Oleg Losev
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Applications • LED Panel: Conventional (discrete LED) is outdoor screens & Surface Mounted Device (SMD) consists of pixel using red, blue, and green diodes that mounted on a chipset. • Fiber Optic Data: uses for high-speed transmission links • Flexible Bending Display • Remote Control
Background image of page 4
Diode Produces Light
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Surface Emitting LED
Background image of page 6
Edge Emitting LED
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Organic LED
Background image of page 8
Organic LEDs •T O L E D - Transparent organic light-emitting device • SOLED – Stacked OLED • IOLED – Inverted OLED •P L E D Polymer light-emitting diodes • PHOLED -
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 10
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 12
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 14
Background image of page 15
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Phosphorescent OLED POLED -Patternable organic light-emitting device OLED Lighter compared to regular LEDs Flexible Possible Future Applications: Flexible Displays (inexpensive) Light sources for decorations Luminous clothing WHITE LIGHT White LED Inorganic Materials Ultraviolet GaN Ultraviolet, Blue InGaN Red, Orange, Yellow GaAsP Orange, Red, Green AlGaInP Green AlGaP Red & Infrared AlGaAs Color Materials LED Performance Highest Efficiencies: AlInGaP heterostructure Highest Quantum Efficiency(External): 55% at 650 nm Power Conversion Efficiency for 650 nm is 45%...
View Full Document

This note was uploaded on 08/23/2011 for the course ECE 3080 taught by Professor Staff during the Spring '08 term at Georgia Institute of Technology.

Page1 / 15

17-Henry_Vo_Light Emitting Diodes - Phosphorescent OLED...

This preview shows document pages 1 - 15. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online