Microlens Array Fabrication by 3D Diffuser Lithography for Light Enhancement of Organic Light-Emitting Devices

Hung Yi Lin; Yong Shan Sun; Shih Liang Chen; Mao Kuo Wei

doi:10.4028/www.scientific.net/KEM.625.430

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Toolpath Planning and Simulation for Cutting Test of Non-Orthogonal Five-Axis Machine Tool
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Design of an Optimal PID Controller by Genetic Algorithms for a Pantograph Type XY Platform
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Identification on Nonlinear Friction Model and Tracking Control for a Ball-Screw Actuated Stage Using Modified Charge System Search
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Microlens Array Fabrication by 3D Diffuser Lithography for Light Enhancement of Organic Light-Emitting Devices
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A Study of Computer Controlled Ultra-Precision Polishing of Silicon Carbide Reflecting Lenses for Enhancing Surface Roughness
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An Investigation of Factors Affecting and Optimizing Material Removal Rate in Computer Controlled Ultra-Precision Polishing
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Investigation of Removal Mechanism of Sapphire in Plasma Assisted Polishing
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 625Microlens Array Fabrication by 3D Diffuser...

Microlens Array Fabrication by 3D Diffuser Lithography for Light Enhancement of Organic Light-Emitting Devices

Abstract:

Microlens arrays have been fabricated by 3D diffuser lithography in this study. The method mainly adopts two kinds of diffuser films with different transmittances and hazes, integrated by photolithography, polydimethylsiloxane (PDMS) molding and UV forming techniques, to get microlens arrays with different parameters and geometries. The features, such as height, geometry and fill factor of microlens arrays, are controlled by photolithography, using a photomask with circular holes and different exposure doses. The microlens arrays can also be duplicated and transferred to the surface of flexible polyethylene terephthalate (PET) substrate through PDMS molding and UV forming processes. Finally, the outcoupling efficiency of microlens arrays attached to organic light-emitting devices (OLEDs) can be measured and analyzed. More than 60% enhancement of luminous current efficiency can be obtained in experimental results.

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Periodical:

Key Engineering Materials (Volume 625)

Pages:

430-436

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.625.430

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Online since:

August 2014

Authors:

Hung Yi Lin, Yong Shan Sun, Shih Liang Chen, Mao Kuo Wei*

Keywords:

Diffuser Film, Diffuser Lithography, Micro-Lens Array, Organic Light-Emitting Device

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