Simultaneous enhancement of luminescence and stability of lead halide perovskites by a diatomite microcavity for light-emitting diodes

2020 ◽  
pp. 128056
Author(s):  
Jiarui Hao ◽  
Zhigao Dai ◽  
Mengyu Guan ◽  
Peipei Dang ◽  
Hongquan Wang ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Light Emitting ◽  
Halide Perovskites ◽  
Lead Halide

Tunable ultra-uniform Cs4PbBr6 perovskites with efficient photoluminescence and excellent stability for high-performance white light-emitting diodes

2021 ◽  
Author(s):  
Yao Li ◽  
Kaimin Du ◽  
Manli Zhang ◽  
Xuan Gao ◽  
Yu Lu ◽  
...  
Keyword(s):  
White Light ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Metal Halide ◽  
Light Emitting ◽  
New Class ◽  
Halide Perovskites ◽  
White Light Emitting Diodes ◽  
Lead Halide ◽  
Excellent Stability

Metal halide perovskites are a new class of promising materials in optoelectronic applications. As optoelectronic properties of the lead halide perovskites are determined largely by their morphology, the morphology of...

Luminescence enhancement of lead halide perovskite light-emitting diodes with plasmonic metal nanostructures

Nanoscale ◽  
2021 ◽  
Author(s):  
Mingfei Zheng ◽  
Guojia Fang
Keyword(s):  
Light Emitting Diodes ◽  
Metal Nanostructures ◽  
Luminescent Materials ◽  
Luminescence Enhancement ◽  
Light Emitting ◽  
Practical Applications ◽  
Light Emitter ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
Lead Halide

Metal halide perovskites, as a newly emerging light-emitter, have been attracting considerable attention on luminescent materials and devices, due to their superior optoelectronic properties and potential practical applications. Recently, perovskite...

B-Site doped lead halide perovskites: synthesis, band engineering, photophysics, and light emission applications

2019 ◽  
Vol 7 (10) ◽  
pp. 2781-2808 ◽  
Author(s):  
Binbin Luo ◽  
Fei Li ◽  
Ke Xu ◽  
Yan Guo ◽  
Ying Liu ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Light Emission ◽  
Chemical Formula ◽  
Light Emitting ◽  
Band Engineering ◽  
General Chemical ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
Lead Halide

Lead halide perovskite (LHP) semiconductors with the general chemical formula ABX3 are now being widely investigated for a variety of applications including but not limited to high-efficiency photovoltaics (PVs) and light-emitting diodes (LEDs).

scholarly journals Efficient sky-blue perovskite light-emitting diodes via photoluminescence enhancement

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Qi Wang ◽  
Xiaoming Wang ◽  
Zhi Yang ◽  
Ninghao Zhou ◽  
Yehao Deng ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
Light Emitting Diodes ◽  
Three Dimensional ◽  
Wide Bandgap ◽  
Charge Carriers ◽  
Light Emitting ◽  
Upper Limit ◽  
Halide Perovskites ◽  
Grain Surface ◽  
Lead Halide

AbstractThe efficiencies of green and red perovskite light-emitting diodes (PeLEDs) have been increased close to their theoretical upper limit, while the efficiency of blue PeLEDs is lagging far behind. Here we report enhancing the efficiency of sky-blue PeLEDs by overcoming a major hurdle of low photoluminescence quantum efficiency in wide-bandgap perovskites. Blending phenylethylammonium chloride into cesium lead halide perovskites yields a mixture of two-dimensional and three-dimensional perovskites, which enhances photoluminescence quantum efficiency from 1.1% to 19.8%. Adding yttrium (III) chloride into the mixture further enhances photoluminescence quantum efficiency to 49.7%. Yttrium is found to incorporate into the three-dimensional perovskite grain, while it is still rich at grain boundaries and surfaces. The yttrium on grain surface increases the bandgap of grain shell, which confines the charge carriers inside grains for efficient radiative recombination. Record efficiencies of 11.0% and 4.8% were obtained in sky-blue and blue PeLEDs, respectively.

scholarly journals Exploring a lead-free organic–inorganic semiconducting hybrid with above-room-temperature dielectric phase transition

RSC Advances ◽  
2020 ◽  
Vol 10 (30) ◽  
pp. 17492-17496
Author(s):  
Yuyin Wang ◽  
Shiguo Han ◽  
Xitao Liu ◽  
Zhenyue Wu ◽  
Zhihua Sun ◽  
...  
Keyword(s):  
Phase Transition ◽  
Room Temperature ◽  
Light Emitting Diodes ◽  
Lead Free ◽  
Inorganic Hybrid ◽  
Light Emitting ◽  
Dielectric Phase ◽  
Halide Perovskites ◽  
Optoelectronic Applications ◽  
Lead Halide

Recently, organic–inorganic hybrid lead halide perovskites have attracted great attention for optoelectronic applications, such as light-emitting diodes, photovoltaics and optoelectronics.

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