Light propagation through textured surfaces

“…Использование методов плазмохимического травления световыводящей поверхности является весьма трудозатратным и дорогостоящим методом. Травление осуществляется через маску из сфер полистирола, формиру-емую на поверхности гетероструктуры [6,7]. Равномерное распределение сфер на поверхности светодиода осуществляется при их переносе с поверхности воды, затем проводится оптимизация диаметра сфер в кислородной плазме и непосредственно травление твердого раствора AlGaAs в плазме BCl 3 .…”

Section: Introductionunclassified

Исследование методов текстурирования светодиодов на основе гетероструктур AlGaAs/GaAs

Малевская¹,

Ильинская²,

Калюжный³

et al. 2021

Физика И Техника Полупроводников

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Investigations of methods for texturing the light-emitting surface of IR light-emitting diodes (LEDs) (wavelength 850 nm) based on AlGaAs/GaAs heterostructures with Bragg reflectors have been carried out. Developed were methods of liquid and plasma-chemical etching of solid solution for creating peaks (pyramids) of different form, 0.2–1.5 µm height. Estimation of the effect of texturing methods and also configuration of peaks on the light-emitting diode electroluminescence intensity has been performed. The increase of the electroluminescence intensity by 25% has been achieved.

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“…1 To recover the energy lost to SPP modes some means must be sought to reduce/augment the wavevectors of the SPPs so as to enable them to couple to light. A number of such methods have been used in the recovery of SPP modes, one approach has been the introduction of surface roughness to the metal thus allowing the SPPs to Bragg scatter to light [2]. Another approach to recover energy lost to bound SPP modes is to introduce wavelength scale microstructure into the device [3][4][5] thereby allowing trapped SPP modes to be Bragg scattered and thus couple to freely propagating radiation so as to produce emitted light.…”

Section: Introductionmentioning

confidence: 99%

Surface plasmon-polariton mediated light emission through thin metal films

Wedge¹,

Barnes²

2004

Opt. Express

104

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The emission of light by sources in close proximity to a thin metallic film is dominated by surface plasmon-polariton modes supported by that film. We explore the nature of the modes and examine how the energy lost to such modes can be recovered. Both cross-coupled and coupled SPPs are presented as a means of transferring energy across a thin metal film. These modes are then scattered and thereby coupled to light by a wavelength scale grating type microstructure. We show that the photoluminescence emission from a structure containing a microstructured thin metal film that supports coupled SPPs is over 50 times greater than that from a similar planar structure. Similar strong photoluminescence emission is also exhibited by a sample that contains a planar metal film coated with a microstructured dielectric overlayer.

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Light propagation through textured surfaces

Cited by 14 publications

References 8 publications

Inorganic Semiconductors for Light‐emitting Diodes

Inorganic Semiconductors for Light‐emitting Diodes

Исследование методов текстурирования светодиодов на основе гетероструктур AlGaAs/GaAs

Surface plasmon-polariton mediated light emission through thin metal films

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