Journal
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS
Volume 40, Issue 7B, Pages L783-L784Publisher
INST PURE APPLIED PHYSICS
DOI: 10.1143/JJAP.40.L783
Keywords
electroluminescence; EL; quantum efficiency; external quantum efficiency; organic EL
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A simple method of measuring the external quantum efficiency of organic electroluminescent (EL) devices has been investigated. Assuming a perfectly diffusive EL emission surface, this method enables the external quantum efficiency to be calculated from the conventionally measured parameters: luminance, EL spectrum, and current. Its use is limited to EL emission in the visible wavelength range.
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