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A novel organic LEFET device with a simple device constitution is presented. The device is equipped with a diffraction grating that is formed on the gate insulator so that it is located outside the channel region. When the device is operated with square-wave alternating gate voltages, the spectrally-narrowed emissions are definitively observed with FWHM ∼2 nm.
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Yamao et al. (2010) studied this question.
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