Enhanced light extraction from InGaN/GaN quantum wells with silver gratings

Estelle Homeyer; Päivi Mattila; Jani Oksanen; Toufik Sadi; Henri Nykänen; Sami Suihkonen; Clementine Symonds; Jukka Tulkki; Filip Tuomisto; Markku Sopanen; Joel Bellessa

doi:10.1063/1.4794066

Enhanced light extraction from InGaN/GaN quantum wells with silver gratings

Estelle Homeyer, Päivi Mattila, Jani Oksanen, Toufik Sadi, Henri Nykänen, Sami Suihkonen, Clementine Symonds, Jukka Tulkki, Filip Tuomisto, Markku Sopanen, Joel Bellessa

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Abstract

We demonstrate that an extraction enhancement by a factor of 2.8 can be obtained for a GaN quantum well structure using metallic nanostructures, compared to a flat semiconductor. The InGaN/GaN quantum well is inserted into a dielectric waveguide, naturally formed in the structure, and a silver grating is deposited on the surface and covered with a polymer film. The polymer layer greatly improves the extraction compared to a single metallic grating. The comparison of the experiments with simulations gives strong indications on the key role of weakly guided modes in the polymer layer diffracted by the grating.

Original language	English
Article number	081110
Number of pages	4
Journal	Applied Physics Letters
Volume	102
Issue number	8
DOIs	https://doi.org/10.1063/1.4794066
Publication status	Published - 2013
MoE publication type	A1 Journal article-refereed

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10.1063/1.4794066

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title = "Enhanced light extraction from InGaN/GaN quantum wells with silver gratings",

abstract = "We demonstrate that an extraction enhancement by a factor of 2.8 can be obtained for a GaN quantum well structure using metallic nanostructures, compared to a flat semiconductor. The InGaN/GaN quantum well is inserted into a dielectric waveguide, naturally formed in the structure, and a silver grating is deposited on the surface and covered with a polymer film. The polymer layer greatly improves the extraction compared to a single metallic grating. The comparison of the experiments with simulations gives strong indications on the key role of weakly guided modes in the polymer layer diffracted by the grating.",

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T1 - Enhanced light extraction from InGaN/GaN quantum wells with silver gratings

AU - Homeyer, Estelle

AU - Mattila, Päivi

AU - Oksanen, Jani

AU - Sadi, Toufik

AU - Nykänen, Henri

AU - Suihkonen, Sami

AU - Symonds, Clementine

AU - Tulkki, Jukka

AU - Tuomisto, Filip

AU - Sopanen, Markku

AU - Bellessa, Joel

N1 - M1 - 081110

PY - 2013

Y1 - 2013

N2 - We demonstrate that an extraction enhancement by a factor of 2.8 can be obtained for a GaN quantum well structure using metallic nanostructures, compared to a flat semiconductor. The InGaN/GaN quantum well is inserted into a dielectric waveguide, naturally formed in the structure, and a silver grating is deposited on the surface and covered with a polymer film. The polymer layer greatly improves the extraction compared to a single metallic grating. The comparison of the experiments with simulations gives strong indications on the key role of weakly guided modes in the polymer layer diffracted by the grating.

AB - We demonstrate that an extraction enhancement by a factor of 2.8 can be obtained for a GaN quantum well structure using metallic nanostructures, compared to a flat semiconductor. The InGaN/GaN quantum well is inserted into a dielectric waveguide, naturally formed in the structure, and a silver grating is deposited on the surface and covered with a polymer film. The polymer layer greatly improves the extraction compared to a single metallic grating. The comparison of the experiments with simulations gives strong indications on the key role of weakly guided modes in the polymer layer diffracted by the grating.

U2 - 10.1063/1.4794066

DO - 10.1063/1.4794066

M3 - Article

SN - 0003-6951

VL - 102

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 8

M1 - 081110

ER -

Enhanced light extraction from InGaN/GaN quantum wells with silver gratings

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