Overview on Sustainability, Robustness, and Reliability of GaN Single-Chip LED Devices

Deshayes, Yannick; Baillot, Raphaël; Joly, Simon; Ousten, Yves; Béchou, Laurent

doi:10.1109/tdmr.2015.2488978

Cited by 5 publications

(2 citation statements)

References 9 publications

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“…Except for high‐power GaN‐based LEDs, mid‐power GaN‐based LEDs (0.2–1 W) have also been increasingly used for indoor illumination in recent years because of the advantages, such as cost‐effectiveness, small package size, and low heat dissipation. [ 52–54 ] However, the mid‐power LED packages normally use plastic packages and copper lead frames, which are different from the high‐power GaN‐based LEDs using ceramics. This would lead to different reliability characteristics, resulting in both lumen degradation and color shift.…”

Section: Mid‐power Gan‐based Ledsmentioning

confidence: 99%

Progress of Reliability and Failure Mechanisms for GaN‐Based Light‐Emitting Diodes

Zhao

Liu

2022

Physica Status Solidi (a)

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To achieve high reliable GaN-based LEDs with a controllable lifetime is one of the key issues for applications. In this review, an overview of reliability studies for different GaN-based LEDs, especially the research progress in our group based on our specially designed in situ multifunctional highly accelerated aging test system over the past few years, is presented. The contents not only cover highpower GaN-based LEDs, mid-power GaN-based LEDs, deep UV GaN-based LEDs, micro-LEDs, and phosphors under different operating conditions but also include the influence of point defects on the degradation, the correlation between luminous flux and color quality, and so on. Finally, prospects for reliability are discussed with the further development of the GaN-based devices.

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Section: Mid‐power Gan‐based Ledsmentioning

confidence: 99%

Progress of Reliability and Failure Mechanisms for GaN‐Based Light‐Emitting Diodes

Zhao

Liu

2022

Physica Status Solidi (a)

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“…Many papers describe different scientific problems connected with the manufacturing, testing, modelling and technical applications of power LEDs [5][6][7][8]. In the last 10 years, the maximum value of the emitted luminous flux and the value of luminous efficiency have visibly increased [3,9,10].…”

Section: Introductionmentioning

confidence: 99%

Compact Modelling of Electrical, Optical and Thermal Properties of Multi-Colour Power LEDs Operating on a Common PCB

Górecki

Ptak

2021

Energies

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This paper concerns the problem of modelling electrical, thermal and optical properties of multi-colour power light-emitting diodes (LEDs) situated on a common PCB (Printed Circuit Board). A new form of electro-thermo-optical model of such power LEDs is proposed in the form of a subcircuit for SPICE (Simulation Program with Integrated Circuits Emphasis). With the use of this model, the currents and voltages of the considered devices, their junction temperature and selected radiometric parameters can be calculated, taking into account self-heating phenomena in each LED and mutual thermal couplings between each pair of the considered devices. The form of the formulated model is described, and a manner of parameter estimation is also proposed. The correctness and usefulness of the proposed model are verified experimentally for six power LEDs emitting light of different colours and mounted on an experimental PCB prepared by the producer of the investigated devices. Verification was performed for the investigated diodes operating alone and together. Good agreement between the results of measurements and computations was obtained. It was also proved that the main thermal and optical parameters of the investigated LEDs depend on a dominant wavelength of the emitted light.

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Review on failure mechanisms InGaN/GaN MQW LED for public light applications

Baillot¹,

Béchou

Massol³

et al. 2019

2019 Global LIFI Congress (GLC)

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Overview on Sustainability, Robustness, and Reliability of GaN Single-Chip LED Devices

Cited by 5 publications

References 9 publications

Progress of Reliability and Failure Mechanisms for GaN‐Based Light‐Emitting Diodes

Progress of Reliability and Failure Mechanisms for GaN‐Based Light‐Emitting Diodes

Compact Modelling of Electrical, Optical and Thermal Properties of Multi-Colour Power LEDs Operating on a Common PCB

Review on failure mechanisms InGaN/GaN MQW LED for public light applications

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