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Enhancement of light extraction efficiency of InGaN quantum wells light emitting diodes using /polystyrene microlens arrays
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10.1063/1.2816891
/content/aip/journal/apl/91/22/10.1063/1.2816891
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/22/10.1063/1.2816891
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Schematic of InGaN QWs LEDs structure utilizing microspheres microlens array.

Image of FIG. 2.
FIG. 2.

(Color online) Process flow schematic of microspheres microlens arrays on InGaN QW LEDs samples via rapid convective deposition.

Image of FIG. 3.
FIG. 3.

(Color online) (a) Confocal laser scanning microscopy and (b) scanning electron microscopy images of microlens array on top of InGaN QWs LED structure. The colloidal crystal forms 2D hexagonal closed-packed microlens arrays.

Image of FIG. 4.
FIG. 4.

(Color online) Comparison of photoluminescence intensity of QW samples with and without microlens array, with He–Cd excitation lasers at room temperature.

Image of FIG. 5.
FIG. 5.

(Color online) Comparison of relative light output power and external quantum efficiency vs injected current for QW LEDs with and without microlens array, emitting at . The measurements were conducted under CW operation at room temperature.

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/content/aip/journal/apl/91/22/10.1063/1.2816891
2007-11-28
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Enhancement of light extraction efficiency of InGaN quantum wells light emitting diodes using SiO2/polystyrene microlens arrays
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/22/10.1063/1.2816891
10.1063/1.2816891
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