1. Home
  2. Measurements - Analysis
  3. Electronic measurements and tests
  4. Display. Visualization - OLED displays

  5. Optimization

Article | REF: R620 V1

Display. Visualization - OLED displays

Authors: Christophe FÉRY, Philippe LE ROY

Publication date: June 10, 2005

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!

2. Optimization

The external quantum efficiency (η q, ext ) of a light-emitting diode is defined as the ratio of the number of photons emitted to the number of electrons injected. It can be described as the product of the electron-hole recombination rate (η r ), the radiative de-excitation probability (η dr ), the photoluminescence efficiency (φ PL ) and the fraction of photons extracted from the device (η opt ) :

ηq, ext=ηr⋅ηdr⋅ϕPL⋅ηopt

You do not have access to this resource.

Exclusive to subscribers. 97% yet to be discovered!

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!

The Ultimate Scientific and Technical Reference

A Comprehensive Knowledge Base, with over 1,200 authors and 100 scientific advisors
+ More than 10,000 articles and 1,000 how-to sheets, over 800 new or updated articles every year
From design to prototyping, right through to industrialization, the reference for securing the development of your industrial projects

This article is included in

Electronic measurements and tests

This offer includes:

Knowledge Base

Updated and enriched with articles validated by our scientific committees

Services

A set of exclusive tools to complement the resources

Practical Path

Operational and didactic, to guarantee the acquisition of transversal skills

Doc & Quiz

Interactive articles with quizzes, for constructive reading

Subscribe now!

Ongoing reading
Optimization
Outline