Journal
ADVANCED OPTICAL MATERIALS
Volume 8, Issue 1, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adom.201901365
Keywords
microcavity structure; smart lighting; ultrathin metal electrodes; white organic light-emitting diodes
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Funding
- GIST Research Institute (GRI) grant - GIST
- National Research Foundation of Korea - Ministry of Science, ICT Planning [NRF-2015M1A2A2057510, NRF-2017K1A1A2013153, 2019R1C1C1007680]
- Korea Institute of Energy Technology Evaluation and Planning
- Ministry of Trade, Industry and Energy of the Republic of Korea [20173010013000]
- Korea Evaluation Institute of Industrial Technology (KEIT)
- Ministry of Trade, Industry AMP
- Energy (MOTIE, Korea) [10080334]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10080334] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2019R1C1C1007680] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The tailoring of the chromaticity of white organic light-emitting diodes (WOLEDs) has presented a significant challenge in their application in smart lighting sources to improve the quality of life and human performance. Here, a new microcavity WOLED (M-WOLED) structure to modulate the chromaticity of the emitted light is demonstrated by only adjusting the thickness of the white light-emitting layer. By introducing a polymer-metal hybrid electrode that functions both as a partially reflective mirror and a transparent electrode, a very simple microcavity architecture that does not require additional outer mirrors, such as distributed Bragg reflectors is developed. The resulting M-WOLEDs exhibit reddish-, greenish-, and bluish-white colors with different thicknesses of the single white light-emitting layer.
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