OLED Materials

Organic light-emitting diodes (OLEDs) consist of layers of organic materials with charge transport or emissive properties sandwiched between conductive electrodes. OLEDs emit light at a specific colour and wavelength, depending on the combination of organic material components. By selecting appropriate host and dopant OLED materials, the emission can be tailored to achieve desired results.

An OLED device has a multilayered system:

Thermally activated delayed fluorescent (TADF) materials along with fluorescent and phosphorescent molecules are the three main groups of compounds found in the light-emitting host layer. Emerging fourth-generation materials, such as multi-resonance thermally activated delayed fluorescent (MR-TADF) compounds, are also being explored. Each group of host material has a distinct photoluminescent mechanism, which can be strategically utilized in device architectures.

As OLEDs become more widely used commercially, device efficiency is crucial. One approach is through selecting the appropriate charge transport layer materials with well matched HOMO and LUMO energy levels to the anode and cathode. Additionally, incorporating electron and hole injection layers can significantly enhance the work function and reduce the energy barrier for charge transport at the electrodes.

We offer high purity OLED materials including fluorescent, phosphorescent and TADF host materials, a range of compatible dopant materials, charge transport layer materials including electron and hole injecting materials. Explore our sublimed OLED materials to ensure optimal efficiency in device performance.

Jump to: OLED Materials by Role | Browse all OLED Materials | Resources and Support

OLED Materials by Role

Dopant Materials

Browse our dopant materials for enhancing luminescence and energy transfer.

Host Materials

View or range of fluorescent, phosphorescent and TADF host materials.

TADF Materials

Browse our TADF materials to improve your OLED efficiencies.

Charge Transport Layer

Charge Transport Layer Materials

Explore our range of charge transport layer materials.

Sublimed Materials

Browse our ultra-pure sublimed materials for maximum device efficiency.

Browse all OLED Materials

Filter by charge transport: electron transport / hole blocking layer hole transport / electron blocking layer electron injection layer hole injection layer

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Organic Light Emitting Diode: OLED Generations and Structure

An organic light emitting diode is a type of light emitting diode (LED) which using organic materials as the emissive layer. LEDs convert electrical energy into light energy via electroluminescence, and they do this very efficiently. By varying the type of organic materials used, you can easily vary the colour of emitted light and efficently optimize the efficiency and stability of your LED device.

OLED Testing Guide

This guide gives you an overview of what to consider when characterising an OLED, as well as tips for their measurement.

OLED Substrate (Pixelated Anode) System Overview

The schematics below show the layout of the substrates along with the available deposition shadow masks. The pixelated anode substrates come with six ITO fingers which define the pixels plus an additional cathode bus-bar.

Tandem OLED

A tandem OLED (organic light emitting diode), also known as a stacked OLED, is a type of screen technology that makes displays brighter and last longer.

Fluorescence and Phosphorescence

Fluorescence and phosphorescence are types of photoluminescence. Photoluminescence refers to radiative emissions where the absorbance of a photon is followed by the emission of a lower energy photon.

History of OLEDs

Organic light-emitting diode (OLED) technology spans over a thirty-year history. It touches our everyday lives through our reliance on devices like smartphones.

OLED Fabrication

Making OLED and OPV solar cells: Quickstart Guide

Organic photovoltaic cells (OPVs) or organic light emitting diodes (OLEDs) can be easily manufactured using Ossila’s pre-patterned ITO substrates and a few simple spin coating and evaporating steps.

OPV and OLED Fabrication Guide

Ossila’s pre-patterned ITO substrates are used for a wide variety of teaching and research devices (both organic and inorganic) where a high-quality ITO surface is required.