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Title: High Efficacy Bendable OLED with Cost-Effective Internal Light Extraction and Transparent Anode Layers

Abstract

In this project, OLEDWorks developed a high efficacy and cost-effective flexible OLED lighting system which could reduce the cost of OLED light by introducing a combination of printable and scalable scattering type internal light extraction (ILE) and transparent conductive silver nanowire technologies that are compatible with roll-to-roll (R2R) processing methods. High efficacy was achieved by co-optimization of the internal light extraction, silver nanowire and ITO anodes, and stacked white OLED structure to reduce unwanted absorption, increase the outcoupling efficiency, and lower the OLED voltage. At the end of Phase I of this project a power efficacy of 90 lm/W was demonstrated in a flexible OLED lighting device based on ultrathin bendable glass. The goal was to demonstrate an OLED efficacy of 100 lm/W using higher performance internal light extraction combined with lower absorption transparent conductive anode layers and state-of-the-art stacked white OLED architectures. The materials and components used for the thin glass substrate, internal light extraction, and transparent conductor are compatible with low cost manufacturing methods such as direct printing and R2R manufacturing. The 100 lm/W goal would exceed the 2018 DOE target of 90 lm/W and approach the 2020 target of 110 lm/W . In the end, we successfullymore » demonstrated bendable OLED devices with an efficacy of 92 lm/W. Without much additional work, the milestone of 100 lm/W is certainly within reach, and with further work on light extraction and white OLED materials, we believe 120 lm/W or higher is achievable within the next few years.« less

Authors:
Publication Date:
Research Org.:
OLEDWorks LLC
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1496966
Report Number(s):
DOE-OLEDWorks-18531-1
DOE Contract Number:  
SC0018531
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; OLED; SSL; Solid State Lighting; Light extraction; Nanowires

Citation Formats

Spindler, Jeffrey. High Efficacy Bendable OLED with Cost-Effective Internal Light Extraction and Transparent Anode Layers. United States: N. p., 2019. Web. doi:10.2172/1496966.
Spindler, Jeffrey. High Efficacy Bendable OLED with Cost-Effective Internal Light Extraction and Transparent Anode Layers. United States. doi:10.2172/1496966.
Spindler, Jeffrey. Tue . "High Efficacy Bendable OLED with Cost-Effective Internal Light Extraction and Transparent Anode Layers". United States. doi:10.2172/1496966. https://www.osti.gov/servlets/purl/1496966.
@article{osti_1496966,
title = {High Efficacy Bendable OLED with Cost-Effective Internal Light Extraction and Transparent Anode Layers},
author = {Spindler, Jeffrey},
abstractNote = {In this project, OLEDWorks developed a high efficacy and cost-effective flexible OLED lighting system which could reduce the cost of OLED light by introducing a combination of printable and scalable scattering type internal light extraction (ILE) and transparent conductive silver nanowire technologies that are compatible with roll-to-roll (R2R) processing methods. High efficacy was achieved by co-optimization of the internal light extraction, silver nanowire and ITO anodes, and stacked white OLED structure to reduce unwanted absorption, increase the outcoupling efficiency, and lower the OLED voltage. At the end of Phase I of this project a power efficacy of 90 lm/W was demonstrated in a flexible OLED lighting device based on ultrathin bendable glass. The goal was to demonstrate an OLED efficacy of 100 lm/W using higher performance internal light extraction combined with lower absorption transparent conductive anode layers and state-of-the-art stacked white OLED architectures. The materials and components used for the thin glass substrate, internal light extraction, and transparent conductor are compatible with low cost manufacturing methods such as direct printing and R2R manufacturing. The 100 lm/W goal would exceed the 2018 DOE target of 90 lm/W and approach the 2020 target of 110 lm/W . In the end, we successfully demonstrated bendable OLED devices with an efficacy of 92 lm/W. Without much additional work, the milestone of 100 lm/W is certainly within reach, and with further work on light extraction and white OLED materials, we believe 120 lm/W or higher is achievable within the next few years.},
doi = {10.2172/1496966},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {1}
}