| Autor: |
Sana, Biswajit, Adhikary, Apurba, Ahsan, Md. Shamim, Newaz, S. H. Shah |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2023, Vol. 2643 Issue 1, p1-9, 9p |
| Abstrakt: |
This paper proposes a unique technique for increasing the intensity and external quantum efficiency (EQE) of white organic light emitting diodes (OLEDs) by incorporating micro/nano-metric structures such as plano-convex and plano-concave nano-lens array, and micro-pillars array on the substrate layer. The simulations were carried out using finite difference time domain method. The basic OLED model produced an EQE of 14.93% where the effective refractive index (ERI) was 1.83. On the contrary, the plano-convex elliptical nano-lens array engraved OLED showed an EQE of 16.32% for ERI of 1.75, which was highest among all kinds of OLEDS. Moreover, plano-convex elliptical nano-lens array engraved OLED exhibited significant improvement of electroluminescence light intensity that was∼15 times higher than the basic OLED at the Near Field. The wavelength spectrum confirmed the generation of white light. Because of the excellent light intensity, efficiency, and light distribution, plano-convex elliptical nano-lens array based OLED can be regarded as a potential candidate of white OLED. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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