Adhikary, Apurba and Bhuiya, Joy and Murad, Saydul Akbar and Hossain, Md. Bipul and Aslam Uddin, K. M. and Faysal, MD Estihad and Rahaman, Abidur and Bairagi, Anupam Kumar (2022) Performance evaluation of micro lens arrays: Improvement of light intensity and efficiency of white organic light emitting diodes. PLoS ONE, 17 (5). pp. 1-28. ISSN 1932-6203. (Published)
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Abstract
This paper proposes a unique method to improve light intensity and efficiency of white organic light emitting diodes (OLEDs) by engraving micro lens arrays (MLAs) on the outer face of the substrate layer. The addition of MLAs on the substrate layer improves the light intensity and external quantum efficiency (EQE) of the OLEDs. The basic OLED model achieved an EQE of 14.45% for the effective refractive index (ERI) of 1.86. The spherical and elliptical (planoconvex and planoconcave) MLAs were incorporated on the outer face of the substrate layer to increase the EQE of the OLEDs. The maximum EQE of 17.30% was obtained for Convex-1 (elliptical planoconvex) MLA engraved OLED where the ERI was 1.70. In addition, Convex-1 MLA engraved OLED showed an improvement of 3.8 times on the peak electroluminescence (EL) light intensity compared to basic OLED. Therefore, Convex-1 MLA incorporated OLED can be considered as a potential white OLED because of its excellent light distribution and intensity profile.
| Item Type: | Article |
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| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | Lenses; Light; Refractometry |
| Subjects: | Q Science > QA Mathematics > QA75 Electronic computers. Computer science Q Science > QA Mathematics > QA76 Computer software T Technology > T Technology (General) T Technology > TA Engineering (General). Civil engineering (General) |
| Faculty/Division: | Faculty of Computing Institute of Postgraduate Studies |
| Depositing User: | Mr Muhamad Firdaus Janih@Jaini |
| Date Deposited: | 03 Nov 2022 03:32 |
| Last Modified: | 03 Nov 2022 03:48 |
| URI: | http://umpir.ump.edu.my/id/eprint/34911 |
| Download Statistic: | View Download Statistics |
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