Effect of a thin Au and ZnO layer on optical properties of 1D PhC structures patterned in LED surface

Škriniarová, J.; Suslik, Lubos; Andok, Robert; Pudiš, Dušan; Schaaf, Peter; Wang, Dong

doi:10.1016/j.ijleo.2019.163333

Cited by 2 publications

(3 citation statements)

References 11 publications

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“…The photonic crystal placed on the semiconductor material's surface destroys the total reflection condition of the initial plane, allowing light to be emitted outside the light cone. As a result, LEE for LEDs can be improved vertically 29–31 . When the PBG effect is employed to improve the LEE of LEDs, the photonic crystal structure is generally penetrated deep inside the active layer to make all outgoing photons from the active layer react with the photonic crystal structure 32,33 .…”

Section: Fundamental Principles For Photonic Crystal Ledsmentioning

confidence: 99%

“…As a result, LEE for LEDs can be improved vertically. [29][30][31] When the PBG effect is employed to improve the LEE of LEDs, the photonic crystal structure is generally penetrated deep inside the active layer to make all outgoing photons from the active layer react with the photonic crystal structure. 32,33 The light wave will be coupled into a radiation pattern in free space if a photonic crystal structure is integrated into the LED when the frequency of the light-guiding mode in the LED falls within the photonic crystal's forbidden PBG and the efficiency of extracting light can theoretically approach 100%.…”

Section: Photonic Band Gap Effectmentioning

confidence: 99%

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Design of photonic crystals for light‐emitting diodes

Wang,

Dong,

et al. 2023

J Am Ceram Soc.

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Photonic crystals (PC) can greatly enhance the optoelectronic performance of LEDs, due to their distinctive color and photonic band gap, etc. Therefore, many scholars have conducted extensive research based on the high light extraction efficiency, good monochromaticity, and other excellent optoelectronic properties of PC LEDs. This review discusses the main principles of photonic crystals to improve the optoelectronic performance of LEDs and summarizes 12 structural applications of photonic crystal LEDs, such as PC slabs, Bragg grating, Backside reflectors, Surface PC, Embedded PC, Dual PC, PC beads, CPC, PC thin films, LIPC, defective PC, composite architectures with other materials that boost LED optoelectronic qualities. In summary, it is found that photonic crystals can not only greatly improve the light extraction efficiency of LEDs but also improve other optoelectronic properties such as luminescent color, and directional radiation angle, and reduce the manufacturing cost of LEDs. Photonic crystal LEDs are expected to be a strong candidate for future lighting technology Finally, the prospects and challenges of PC LEDs are summarized.This article is protected by copyright. All rights reserved

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Section: Fundamental Principles For Photonic Crystal Ledsmentioning

confidence: 99%

Section: Photonic Band Gap Effectmentioning

confidence: 99%

Design of photonic crystals for light‐emitting diodes

Wang,

Dong,

et al. 2023

J Am Ceram Soc.

View full text Add to dashboard Cite

show abstract

“…3(a), the strongest light intensity has observed for the dipole located at the top surface (i.e. position a, near the back opaque cathode), which shows a typical Lambertian radiation pattern [31] indicating the even distribution of the emitted photons in all directions. When the dipole emitter moves to the bottom surface (i.e.…”

Section: A Radiation Pattern Analysis Of Vertical Dipole Locationmentioning

confidence: 99%

The Influence of the Emission Source on Outcoupling and Directivity of Patterned Perovskite Light-Emitting Diodes

Ren

Yan

et al. 2021

IEEE Photonics J.

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The perovskite light-emitting diodes (PeLEDs) have attracted considerable research interests in recent years due to their decent and tunable optoelectronic characteristics. Here, we unveil the properties of the emission source (e.g. location, polarization, etc.) and the influences of the incorporated nanopatterns on the light emission of PeLEDs by using the finite difference time domain (FDTD) method. The results indicated that the PeLEDs with nanopatterns not only show substantial improvement of light extraction intensity but also reveal a remarkable directivity. Moreover, the emission angle of the directional PeLEDs can be continuously engineered over 65 o by judicious selection of the nanopatterns. This work is of great importance for engineering highly directional and efficient luminescence devices.

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Effect of a thin Au and ZnO layer on optical properties of 1D PhC structures patterned in LED surface

Cited by 2 publications

References 11 publications

Design of photonic crystals for light‐emitting diodes

Design of photonic crystals for light‐emitting diodes

The Influence of the Emission Source on Outcoupling and Directivity of Patterned Perovskite Light-Emitting Diodes

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