Color-tunable emission by adjusting sensitizer (Yb3+) and excitation power of 980 nm in NaGdTiO4:Yb3+/Tm3+/Er3+ phosphors for light emitting diodes

2018 ◽  
Vol 194 ◽  
pp. 225-230 ◽  
Author(s):  
Aihua Zhou ◽  
Feng Song ◽  
Yingdong Han ◽  
Feifei Song ◽  
Dandan Ju ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Excitation Power ◽  
Light Emitting ◽  
Color Tunable ◽  
Tunable Emission

Visible Color Tunable Emission in Three-Dimensional Light Emitting Diodes by MgO Passivation of Pyramid Tip

2015 ◽  
Vol 7 (50) ◽  
pp. 27743-27748 ◽  
Author(s):  
Ji-Hyun Kim ◽  
Byeong Uk Ye ◽  
Joonmo Park ◽  
Chul Jong Yoo ◽  
Buem Joon Kim ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Three Dimensional ◽  
Light Emitting ◽  
Color Tunable ◽  
Tunable Emission

scholarly journals The Optical Properties of InGaN/GaN Nanorods Fabricated on (-201) β-Ga2O3 Substrate for Vertical Light Emitting Diodes

Photonics ◽  
2021 ◽  
Vol 8 (2) ◽  
pp. 42
Author(s):  
Jie Zhao ◽  
Weijiang Li ◽  
Lulu Wang ◽  
Xuecheng Wei ◽  
Junxi Wang ◽  
...  
Keyword(s):  
Stark Effect ◽  
Light Emitting Diodes ◽  
Light Emitting Diode ◽  
Strain Relaxation ◽  
Blue Shift ◽  
Peak Position ◽  
Excitation Power ◽  
Light Extraction Efficiency ◽  
Excitation Power Density ◽  
Light Emitting

We fabricated InGaN/GaN nanorod light emitting diode (LED) on (-201) β-Ga2O3 substrate via the SiO2 nanosphere lithography and dry-etching techniques. The InGaN/GaN nanorod LED grown on β-Ga2O3 can effectively suppress quantum confined Stark effect (QCSE) compared to planar LED on account of the strain relaxation. With the enhancement of excitation power density, the photoluminescence (PL) peak shows a large blue-shift for the planar LED, while for the nanorod LED, the peak position shift is small. Furthermore, the simulations also show that the light extraction efficiency (LEE) of the nanorod LED is approximately seven times as high as that of the planar LED. Obviously, the InGaN/GaN/β-Ga2O3 nanorod LED is conducive to improving the optical performance relative to planar LED, and the present work may lay the groundwork for future development of the GaN-based vertical light emitting diodes (VLEDs) on β-Ga2O3 substrate.

Coordination Units of Mn2+ Modulation toward Tunable Emission in Zero-Dimensional Bromides for White Light-Emitting Diodes

2022 ◽  
Author(s):  
Guojun Zhou ◽  
Jialiang Ding ◽  
Xing-Xing Jiang ◽  
Jian Zhang ◽  
Maxim Molokeev ◽  
...  
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Lead Free ◽  
Metal Halides ◽  
Light Emitting ◽  
High Efficient ◽  
White Light Emitting Diodes ◽  
Multifunctional Platform ◽  
Tunable Emission

Organic-inorganic metal halides have become a multifunctional platform for manipulating photoluminescence due to high-efficient and tunable emissions, especially for lead-free Mn2+-based halides. Herein, the zero-dimensional (0D) bromides of (C5H14N3)2MnBr4 and...

Color tunable Eu-doped CaSrNb2O7 phosphors for white light-emitting diodes and optical thermometers

2020 ◽  
Vol 227 ◽  
pp. 117582
Author(s):  
Qianchao Ma ◽  
Qihu Li ◽  
Guangqing Zhang ◽  
Shuiquan Han ◽  
Qianxin Zhang ◽  
...  
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Color Tunable ◽  
White Light Emitting Diodes
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