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Open AccessJournal ArticleDOI

Organic light-emitting-diode lighting overview

Yuan-Sheng Tyan
- 01 Jan 2011 - 
- Vol. 1, Iss: 1, pp 011009
TLDR
It is shown that OLED lighting products should be positioned as luminaires and not light bulbs, which affects both the performance and price expectations, and why there is optimism that, with volume production, OLED lighting can be competitive against other Luminaires even on the first-cost.
Abstract
For organic light-emitting-diode (OLED) lighting to be successful, it is critical that it be properly positioned in the marketplace. It is also critical that both the performance and cost be competitive against other lighting technologies in the selected marketplace. This presentation gives an overview of OLED lighting technology from these perspectives. It shows that OLED lighting products should be positioned as luminaires and not light bulbs, which affects both the performance and price expectations. Laboratory OLED devices already demonstrated efficacies that are more than competitive against luminaires based on other lighting technologies. There is potential for substantial further improvement in efficacy. The greatest opportunities come from light-extraction efficiency improvements and from an improved blue emitting system. There has been great recent progress in the OLED device lifetime. To be acceptable as luminaires, however, OLED may need even more lifetime improvements. Not all the improvements need to come from OLED technology improvement, however. We discuss other means to effectively improve the lifetime of OLED lighting panels and show why there is optimism that, with volume production, OLED lighting can be competitive against other luminaires even on the first-cost

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Citations
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TL;DR: In this article, the authors review the working principles of OLEDs and highlight ongoing efforts to improve their efficiency, in particular by coupling out more light, and highlight the challenges for further device improvements.
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Low-driving-voltage blue phosphorescent organic light-emitting devices with external quantum efficiency of 30%.

TL;DR: A homoleptic iridium (iii) tris(pheny-limidazolinate) complex realizes a high EQE of 30%, a low turn-on voltage of 2.5 V, and a small efficiency roll-off in a blue organic light-emitting device (OLED).
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Recent Progress in Phosphorescent Organic Light‐Emitting Devices

TL;DR: In this paper, a review of recent developments in phosphorescent OLED technology, especially from materials chemistry, is presented, with the aim of achieving high internal quantum efficiency, low operation voltage, and high light-outcoupling efficiency at the same time.
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White Organic LED with a Luminous Efficacy Exceeding 100 lm W−1 without Light Out-Coupling Enhancement Techniques

TL;DR: In this paper, an ultra-efficient white organic light-emitting diodes (OLEDs) is discussed based on a newly designed thermally activated delayed fluorescent exciplex host, which delivers an unusually high forward-viewing LE of 105.0 lm W−1 and external quantum efficiency (EQE) ηext of ≈30% (without using any optical outcoupling techniques).
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Journal ArticleDOI

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Journal ArticleDOI

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