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Organic Light-Emitting Diodes

By: Grant Warfield

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What is an OLED?

An OLED is an electronic device made byplacing a series of organic thin films betweentwo condctors! When electrical crrent is

applied" a bright light is emitted!

A device that is #$$ to %$$ nanometers thic& orabot '$$ times smaller than a hman hair!

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The OLED Structure

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How OLEDs Emit Light

(he battery or power spply of the devicecontaining the OLED applies a voltageacross the OLED!

An electrical crrent flows from the cathodeto the anode throgh the organic layers!)an electrical crrent is a flow of electrons*

At the bondary between the emissive andthe condctive layers" electrons find electronholes!

(he OLED emits light!

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Types of OLEDs

+assive-matri,

Active-matri,

(ransparent

(op-emitting

le,ible White

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Passive-Matri

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!ctive-Matri

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Transparent

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Top-Emitting

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"#ei$#e

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White

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Disa%vantages

Lifetime

0anfactring

Water

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&urrent OLEDs

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"uture of OLEDs?