Device Architecture and Materials for Organic Light-Emitting Devices

Targeting High Current Densities and Control of the Triplet Concentration

Nonfiction, Science & Nature, Science, Physics, Solid State Physics, Technology, Electronics, Circuits
Cover of the book Device Architecture and Materials for Organic Light-Emitting Devices by Sarah Schols, Springer Netherlands
View on Amazon View on AbeBooks View on Kobo View on B.Depository View on eBay View on Walmart
Author: Sarah Schols ISBN: 9789400716087
Publisher: Springer Netherlands Publication: May 10, 2011
Imprint: Springer Language: English
Author: Sarah Schols
ISBN: 9789400716087
Publisher: Springer Netherlands
Publication: May 10, 2011
Imprint: Springer
Language: English

Device Architecture and Materials for Organic Light-Emitting Devices focuses on the design of new device and material concepts for organic light-emitting devices, thereby targeting high current densities and an improved control of the triplet concentration. A new light-emitting device architecture, the OLED with field-effect electron transport, is demonstrated. This device is a hybrid between a diode and a field-effect transistor. Compared to conventional OLEDs, the metallic cathode is displaced by one to several micrometers from the light-emitting zone, reducing optical absorption losses. The electrons injected by the cathode accumulate at an organic heterojunction and are transported to the light-emission zone by field-effect. High mobilities for charge carriers are achieved in this way, enabling a high current density and a reduced number of charge carriers in the device. Pulsed excitation experiments show that pulses down to 1 µs can be applied to this structure without affecting the light intensity, suggesting that pulsed excitation might be useful to reduce the accumulation of triplets in the device. The combination of all these properties makes the OLED with field-effect electron transport particularly interesting for waveguide devices and future electrically pumped lasers. In addition, triplet-emitter doped organic materials, as well as the use of triplet scavengers in conjugated polymers are investigated.

View on Amazon View on AbeBooks View on Kobo View on B.Depository View on eBay View on Walmart

Device Architecture and Materials for Organic Light-Emitting Devices focuses on the design of new device and material concepts for organic light-emitting devices, thereby targeting high current densities and an improved control of the triplet concentration. A new light-emitting device architecture, the OLED with field-effect electron transport, is demonstrated. This device is a hybrid between a diode and a field-effect transistor. Compared to conventional OLEDs, the metallic cathode is displaced by one to several micrometers from the light-emitting zone, reducing optical absorption losses. The electrons injected by the cathode accumulate at an organic heterojunction and are transported to the light-emission zone by field-effect. High mobilities for charge carriers are achieved in this way, enabling a high current density and a reduced number of charge carriers in the device. Pulsed excitation experiments show that pulses down to 1 µs can be applied to this structure without affecting the light intensity, suggesting that pulsed excitation might be useful to reduce the accumulation of triplets in the device. The combination of all these properties makes the OLED with field-effect electron transport particularly interesting for waveguide devices and future electrically pumped lasers. In addition, triplet-emitter doped organic materials, as well as the use of triplet scavengers in conjugated polymers are investigated.

More books from Springer Netherlands

Cover of the book Evidence-Based Approaches for the Treatment of Maltreated Children by Sarah Schols
Cover of the book Universals by Sarah Schols
Cover of the book Conflict and the Environment by Sarah Schols
Cover of the book Idealism Without Limits by Sarah Schols
Cover of the book Higher Education: Handbook of Theory and Research by Sarah Schols
Cover of the book Social Structure and Voting in the United States by Sarah Schols
Cover of the book Diabetes Explained by Sarah Schols
Cover of the book A Discourse on Novelty and Creation by Sarah Schols
Cover of the book Virginia Woolf and Neuropsychiatry by Sarah Schols
Cover of the book Amniotic Membrane by Sarah Schols
Cover of the book Bacterial Chromatin by Sarah Schols
Cover of the book Value Functions for Environmental Management by Sarah Schols
Cover of the book Advances in Mitochondrial Medicine by Sarah Schols
Cover of the book The Making of the Test Ban Treaty by Sarah Schols
Cover of the book Handbook of Philosophical Logic by Sarah Schols
We use our own "cookies" and third party cookies to improve services and to see statistical information. By using this website, you agree to our Privacy Policy