Color-Tunable Photoluminescence and NIR Electroluminescence in Carbon Nitride Thin Films and Light-Emitting Diodes

2015 ◽  
Vol 3 (7) ◽  
pp. 913-917 ◽  
Author(s):  
Jingsan Xu ◽  
Menny Shalom ◽  
Fortunato Piersimoni ◽  
Markus Antonietti ◽  
Dieter Neher ◽  
...  
Keyword(s):  
Thin Films ◽  
Carbon Nitride ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Color Tunable

scholarly journals Two-dimensional perovskites with alternating cations in the interlayer space for stable light-emitting diodes

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Yiyue Zhang ◽  
Masoumeh Keshavarz ◽  
Elke Debroye ◽  
Eduard Fron ◽  
Miriam Candelaria Rodríguez González ◽  
...  
Keyword(s):  
Thin Films ◽  
Near Infrared ◽  
Light Emitting Diodes ◽  
Interlayer Space ◽  
High Current Density ◽  
Operational Stability ◽  
Infrared Light ◽  
Two Dimensional ◽  
Commercial Development ◽  
Light Emitting

Abstract Lead halide perovskites have attracted tremendous attention in photovoltaics due to their impressive optoelectronic properties. However, the poor stability of perovskite-based devices remains a bottleneck for further commercial development. Two-dimensional perovskites have great potential in optoelectronic devices, as they are much more stable than their three-dimensional counterparts and rapidly catching up in performance. Herein, we demonstrate high-quality two-dimensional novel perovskite thin films with alternating cations in the interlayer space. This innovative perovskite provides highly stable semiconductor thin films for efficient near-infrared light-emitting diodes (LEDs). Highly efficient LEDs with tunable emission wavelengths from 680 to 770 nm along with excellent operational stability are demonstrated by varying the thickness of the interlayer spacer cation. Furthermore, the best-performing device exhibits an external quantum efficiency of 3.4% at a high current density (J) of 249 mA/cm2 and remains above 2.5% for a J up to 720 mA cm−2, leading to a high radiance of 77.5 W/Sr m2 when driven at 6 V. The same device also shows impressive operational stability, retaining almost 80% of its initial performance after operating at 20 mA/cm2 for 350 min. This work provides fundamental evidence that this novel alternating interlayer cation 2D perovskite can be a promising and stable photonic emitter.

Naphthyl-modified graphitic carbon nitride: Preparation and application in light-emitting diodes

2022 ◽  
pp. 118734
Author(s):  
Huaijun Tang ◽  
Qiuhong Chen ◽  
Shiyou Lu ◽  
Xianghua Li ◽  
Haoju Li ◽  
...  
Keyword(s):  
Carbon Nitride ◽  
Light Emitting Diodes ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Light Emitting

Quasi‐2D CsPbBr x I 3− x Composite Thin Films for Efficient and Stable Red Perovskite Light‐Emitting Diodes

2021 ◽  
pp. 2101419
Author(s):  
Ping Liu ◽  
Wanqing Cai ◽  
Cong Zhao ◽  
Siwei Zhang ◽  
Pengbo Nie ◽  
...  
Keyword(s):  
Thin Films ◽  
Light Emitting Diodes ◽  
Composite Thin Films ◽  
Light Emitting

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

Transparent bi-directional organic light-emitting diodes with color-tunable top emission

2020 ◽  
Vol 86 ◽  
pp. 105900
Author(s):  
Gunel Huseynova ◽  
Jae-Hyun Lee ◽  
Yong Hyun Kim ◽  
Jonghee Lee
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Color Tunable
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