The Prototype Implementation of Interleaved Based PFC Rectification Light Emitting Diodes Systems for Low Power Applications

This proposed topology presents the interleaved boost AC–DC rectification for power factor correction. This topology operating at CCM. It has low semiconductor components, low cost, less complexity and it has low ripple voltage. It's PF reach to high at AC side and also has high efficiency and reduced harmonics. This AC–DC rectifier controlled with a PID switching controller which is used to a utilized laptop and mobile charging applications. This topology verified by Matlab Simulink and bridgeless topology LED electronics prototype kit has tested and verified.

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High efficiency and low efficiency roll-off all fluorescent white organic light-emitting diodes based on phosphor sensitization

Journal of Materials Chemistry C ◽

10.1039/c9tc06346c ◽

2020 ◽

Vol 8 (5) ◽

pp. 1666-1672

Author(s):

Jingwen Yao ◽

Yuwen Chen ◽

Yibing Wu ◽

Xianfeng Qiao ◽

Dezhi Yang ◽

...

Keyword(s):

High Efficiency ◽

Light Emitting Diodes ◽

Low Cost ◽

Operational Stability ◽

Organic Light Emitting Diodes ◽

Light Emitting ◽

Organic Light ◽

Significant Interest ◽

Low Efficiency

All fluorescent white organic light-emitting diodes (WOLEDs) have aroused significant interest owing to the advantages of excellent operational stability, low efficiency roll-off and low cost.

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Device Engineering for All-Inorganic Perovskite Light-Emitting Diodes

Nanomaterials ◽

10.3390/nano9071007 ◽

2019 ◽

Vol 9 (7) ◽

pp. 1007 ◽

Cited By ~ 12

Author(s):

Dongxiang Luo ◽

Qizan Chen ◽

Ying Qiu ◽

Menglong Zhang ◽

Baiquan Liu

Keyword(s):

High Performance ◽

High Efficiency ◽

Light Emitting Diodes ◽

Low Cost ◽

Critical Role ◽

Hole Injection ◽

Charge Balance ◽

Light Emitting ◽

Inorganic Perovskite ◽

Device Engineering

Recently, all-inorganic perovskite light-emitting diodes (PeLEDs) have attracted both academic and industrial interest thanks to their outstanding properties, such as high efficiency, bright luminance, excellent color purity, low cost and potentially good operational stability. Apart from the design and treatment of all-inorganic emitters, the device engineering is another significant factor to guarantee the high performance. In this review, we have summarized the state-of-the-art concepts for device engineering in all-inorganic PeLEDs, where the charge injection, transport, balance and leakage play a critical role in the performance. First, we have described the fundamental concepts of all-inorganic PeLEDs. Then, we have introduced the enhancement of device engineering in all-inorganic PeLEDs. Particularly, we have comprehensively highlighted the emergence of all-inorganic PeLEDs, strategies to improve the hole injection, approaches to enhance the electron injection, schemes to increase the charge balance and methods to decrease the charge leakage. Finally, we have clarified the issues and ways to further enhance the performance of all-inorganic PeLEDs.

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