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Enhancement of light extraction and out-coupling efficiency of thin: film stacked organic light-emitting diode display

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Abstract

Lighting plays a significant role in human life. Organic light-emitting diodes (OLEDs) are one of the fastest-growing and most exciting device segments in automotive applications. Designing OLED panels with enhanced light extraction and out-coupling efficiencies is the ultimate lighting technology for high-end automotive taillight applications. In a conventional OLED, approximately 80% of the emitted light is trapped and lost inside the organic and substrate layers because of unbalanced charge carrier transport and recombination of quenching electrodes. To improve the charge transport stability in the organic layer, introducing an optimal distribution of particles through different emission channels of an OLED with optimal thickness may result in the enhancement of light extraction and out-coupling efficiency. This paper provides a detailed assessment of fabrication measurement and software simulation in stacked thin-film OLED design architecture. Introducing an optimal transport layer thickness in stack contribute 36% increase in outcoupling efficiency and also angle-dependency light extraction provides 60.2% emission spectrum over viewing angles from − 90° to + 90°.

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Acknowledgements

The authors express their sincere gratitude to the Principal, R.M.D Engineering College, and thank all the teaching and non-teaching staff of the Electronics and Communication Department for their support throughout the dissertation. The authors gratefully acknowledge the Participation in the Familiarization workshop and hands-on training program conducted by INUP -i2i (Idea to Innovation), held at IIT Madras.

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  1. Department of Electronics and Communication Engineering, R.M.D Engineering College, Tiruvallur, India

    P. Santhoshini & K. Helen Prabha

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  1. P. Santhoshini
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Correspondence to P. Santhoshini.

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The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. The authors declare the following financial interests/personal relationships which may be considered as potential competing interests.

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Santhoshini, P., Prabha, K.H. Enhancement of light extraction and out-coupling efficiency of thin: film stacked organic light-emitting diode display. J Opt 53, 923–932 (2024). https://doi.org/10.1007/s12596-023-01247-1

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