Modeling of enhancement effect of moth-eye antireflective coating on organic light-emitting diode

Chaya B. Muniraju; Venkatesha Muniswamy; K. Yellareswara Rao; Narayan Krishnaswamy

doi:10.1117/1.JNP.12.046021

19 December 2018 Modeling of enhancement effect of moth-eye antireflective coating on organic light-emitting diode

Chaya B. Muniraju, Venkatesha Muniswamy, K. Yellareswara Rao, Narayan Krishnaswamy

Author Affiliations +

Funded by: Science and Engineering Research Board (SERB)

Journal of Nanophotonics, Vol. 12, Issue 4, 046021 (December 2018). https://doi.org/10.1117/1.JNP.12.046021

Abstract

A moth-eye antireflective coating (M-ARC) on the surface of a glass substrate is reported for enhanced efficiency of an organic light-emitting diode (OLED). The M-ARC reflects the light trapped in the substrate modes of the device. Fresnel’s theory was applied to study the reflection and absorption of light on the M-ARC. The effect of the M-ARC on the OLED for light out-coupling efficiency was analyzed using the finite-difference time-domain method. The improvement in light extraction efficiency of the OLED was optimized by investigating the parameters of pitch, thickness, refractive indices, and height of the M-ARC. The enhancement in peak extraction efficiency of the moth-eye-based OLED as a function of wavelength is ∼3.0 compared to conventional OLEDs.

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Chaya B. Muniraju, Venkatesha Muniswamy, K. Yellareswara Rao, and Narayan Krishnaswamy "Modeling of enhancement effect of moth-eye antireflective coating on organic light-emitting diode," Journal of Nanophotonics 12(4), 046021 (19 December 2018). https://doi.org/10.1117/1.JNP.12.046021

Received: 24 August 2018; Accepted: 21 November 2018; Published: 19 December 2018

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