scholarly journals Recent Development of Optoelectronic Application Based on Metal Halide Perovskite Nanocrystals

2022 ◽  
Vol 9 ◽  
Author(s):  
Jianxiu Hao ◽  
Xing Xiao
Keyword(s):  
Solar Cells ◽  
Single Crystals ◽  
Metal Halide ◽  
Light Emitting ◽  
Perovskite Nanocrystals ◽  
Future Design ◽  
Optoelectronic Application ◽  
Metal Halide Perovskite ◽  
Recent Developments ◽  
Halide Perovskite

In the past years, metal halide perovskite (MHP) single crystals have become promising candidates for optoelectronic devices since they possess better optical and charge transport properties than their polycrystalline counterparts. Despite these advantages, traditional bulk growth methods do not lend MHP single crystals to device integration as readily as their polycrystalline analogues. Perovskite nanocrystals (NCs), nanometer-scale perovskite single crystals capped with surfactant molecules and dispersed in non-polar solution, are widely investigated in solar cells and light-emitting diodes (LEDs), because of the direct bandgap, tunable bandgaps, long charge diffusion length, and high carrier mobility, as well as solution-processed film fabrication and convenient substrate integration. In this review, we summarize recent developments in the optoelectronic application of perovskite nanocrystal, including solar cells, LEDs, and lasers. We highlight strategies for optimizing the device performance. This review aims to guide the future design of perovskite nanocrystals for various optoelectronic applications.

scholarly journals Hollow metal halide perovskite nanocrystals with efficient blue emissions

2020 ◽  
Vol 6 (17) ◽  
pp. eaaz5961 ◽  
Author(s):  
Michael Worku ◽  
Yu Tian ◽  
Chenkun Zhou ◽  
Haoran Lin ◽  
Maya Chaaban ◽  
...  
Keyword(s):  
Quantum Confinement Effect ◽  
Visible Spectrum ◽  
Precursor Solution ◽  
Metal Halide ◽  
Synthetic Control ◽  
Light Emitting ◽  
Perovskite Nanocrystals ◽  
Highly Efficient ◽  
Metal Halide Perovskite ◽  
Halide Perovskite

Metal halide perovskite nanocrystals (NCs) have emerged as new-generation light-emitting materials with narrow emissions and high photoluminescence quantum efficiencies (PLQEs). Various types of perovskite NCs, e.g., platelets, wires, and cubes, have been discovered to exhibit tunable emissions across the whole visible spectrum. Despite remarkable advances in the field of perovskite NCs, many nanostructures in inorganic NCs have not yet been realized in metal halide perovskites, and producing highly efficient blue-emitting perovskite NCs remains challenging and of great interest. Here, we report the discovery of highly efficient blue-emitting cesium lead bromide (CsPbBr3) perovskite hollow NCs. By facile solution processing of CsPbBr3 precursor solution containing ethylenediammonium bromide and sodium bromide, in situ formation of hollow CsPbBr3 NCs with controlled particle and pore sizes is realized. Synthetic control of hollow nanostructures with quantum confinement effect results in color tuning of CsPbBr3 NCs from green to blue, with high PLQEs of up to 81%.

scholarly journals Resolving spatial and energetic distributions of trap states in metal halide perovskite solar cells

Science ◽  
2020 ◽  
Vol 367 (6484) ◽  
pp. 1352-1358 ◽  
Author(s):  
Zhenyi Ni ◽  
Chunxiong Bao ◽  
Ye Liu ◽  
Qi Jiang ◽  
Wu-Qiang Wu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Single Crystals ◽  
Surface Passivation ◽  
Perovskite Solar Cells ◽  
Hole Transport ◽  
Metal Halide ◽  
Trap States ◽  
Deep Traps ◽  
Metal Halide Perovskite ◽  
Halide Perovskite

We report the profiling of spatial and energetic distributions of trap states in metal halide perovskite single-crystalline and polycrystalline solar cells. The trap densities in single crystals varied by five orders of magnitude, with a lowest value of 2 × 1011 per cubic centimeter and most of the deep traps located at crystal surfaces. The charge trap densities of all depths of the interfaces of the polycrystalline films were one to two orders of magnitude greater than that of the film interior, and the trap density at the film interior was still two to three orders of magnitude greater than that in high-quality single crystals. Suprisingly, after surface passivation, most deep traps were detected near the interface of perovskites and hole transport layers, where a large density of nanocrystals were embedded, limiting the efficiency of solar cells.

Light-emitting Electrochemical Cells based on Inorganic Metal Halide Perovskite Nanocrystals

2018 ◽  
Author(s):  
Meltem F. Ayguler ◽  
Bianka M. D. Puscher ◽  
Thomas Bein ◽  
Ruben D. Costa ◽  
Pablo Docampo
Keyword(s):  
Metal Halide ◽  
Electrochemical Cells ◽  
Light Emitting ◽  
Perovskite Nanocrystals ◽  
Metal Halide Perovskite ◽  
Halide Perovskite

Advances in light-emitting metal-halide perovskite nanocrystals

MRS Bulletin ◽  
2020 ◽  
Vol 45 (6) ◽  
pp. 458-466 ◽  
Author(s):  
Liang-Jin Xu ◽  
Michael Worku ◽  
Qingquan He ◽  
Biwu Ma
Keyword(s):  
Metal Halide ◽  
Light Emitting ◽  
Perovskite Nanocrystals ◽  
Metal Halide Perovskite ◽  
Halide Perovskite ◽  
Image Position

Abstract

scholarly journals Colloidal metal halide perovskite nanocrystals: synthesis, characterization, and applications

2016 ◽  
Vol 4 (18) ◽  
pp. 3898-3904 ◽  
Author(s):  
Sai Bai ◽  
Zhongcheng Yuan ◽  
Feng Gao
Keyword(s):  
Chemical Synthesis ◽  
Metal Halide ◽  
Perovskite Nanocrystals ◽  
Metal Halide Perovskite ◽  
Recent Developments ◽  
Halide Perovskite ◽  
Optoelectronic Applications ◽  
Colloidal Metal

In this Highlight, we review recent developments in colloidal perovskite nanocrystals, including the chemical synthesis, characterization and optoelectronic applications.

Towards Environmentally Friendly Solution Processing of Metal Halide Perovskite Technology

2021 ◽  
Author(s):  
Minh Tam Hoang ◽  
Feray Ünlü ◽  
Wayde Neil Martens ◽  
John M. Bell ◽  
Sanjay Mathur ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Energy Conversion Efficiency ◽  
Metal Halide ◽  
World Record ◽  
Light Emitting ◽  
Perovskite Materials ◽  
Metal Halide Perovskite ◽  
Halide Perovskite

Metal halide perovskite materials have demonstrated unique properties for applications in optoelectrical devices such as solar cells, light emitting diodes and photodetectors etc. The unprecedented world-record energy conversion efficiency over...

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