From the result of {TAIL ~ simulation} of the light extraction efficiency, the present inventors have took note of the fact that the great proportion of {HEAD ~ the light} emitted from the organic EL layer comes to assume the transparent electrode waveguide mode or the transparent substrate waveguide mode 
From the result of { TAIL ~ simulation } of the light extraction efficiency , the present inventors have took note of the fact that the great proportion of { HEAD ~ the light } emitted from the organic EL layer comes to assume the transparent electrode waveguide mode or the transparent substrate waveguide mode
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