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 Assessment Reform in Education by Sarah Schols
Cover of the book Michael Speransky by Sarah Schols
Cover of the book Advances in Cancer Biomarkers by Sarah Schols
Cover of the book D.M. Armstrong by Sarah Schols
Cover of the book International Space Station by Sarah Schols
Cover of the book An Introduction to Medical Manipulation by Sarah Schols
Cover of the book Historical Research in the Low Countries 1970–1975 by Sarah Schols
Cover of the book Advanced Łukasiewicz calculus and MV-algebras by Sarah Schols
Cover of the book Psychological, Educational, and Sociological Perspectives on Success and Well-Being in Career Development by Sarah Schols
Cover of the book The Policy of Simmering by Sarah Schols
Cover of the book Recent Advances in Broadband Dielectric Spectroscopy by Sarah Schols
Cover of the book Husserl, Heidegger and the Crisis of Philosophical Responsibility by Sarah Schols
Cover of the book The Totalizing Act: Key to Husserl’s Early Philosophy by Sarah Schols
Cover of the book Ecology of Language Acquisition by Sarah Schols
Cover of the book Relativism Refuted 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