Pressure-Induced Bandgap Engineering of Lead-Free Halide Double Perovskite (NH4)2SnBr6

2021 ◽  
Author(s):  
Jiaxiang Wang ◽  
Lingrui Wang ◽  
Fei Wang ◽  
Sheng Jiang ◽  
Haizhong Guo
Keyword(s):  
Double Perovskite ◽  
Vital Role ◽  
Lead Free ◽  
Double Perovskites ◽  
Bandgap Engineering ◽  
Environmental Friendly ◽  
Halide Perovskites ◽  
Optoelectronic Applications

Lead-free halide double perovskites (HDPs) have recently been proposed as potential stable and environmental-friendly alternatives to lead-based halide perovskites. Bandgap engineering plays a vital role in optoelectronic applications of HDP...

scholarly journals Magnetizing lead-free halide double perovskites

2020 ◽  
Vol 6 (45) ◽  
pp. eabb5381
Author(s):  
Weihua Ning ◽  
Jinke Bao ◽  
Yuttapoom Puttisong ◽  
Fabrizo Moro ◽  
Libor Kobera ◽  
...  
Keyword(s):  
High Speed ◽  
Double Perovskite ◽  
Lead Free ◽  
Great Success ◽  
Double Perovskites ◽  
Temperature Dependent ◽  
Magnetic Elements ◽  
Halide Perovskites ◽  
New Generation ◽  
Further Development

Spintronics holds great potential for next-generation high-speed and low–power consumption information technology. Recently, lead halide perovskites (LHPs), which have gained great success in optoelectronics, also show interesting magnetic properties. However, the spin-related properties in LHPs originate from the spin-orbit coupling of Pb, limiting further development of these materials in spintronics. Here, we demonstrate a new generation of halide perovskites, by alloying magnetic elements into optoelectronic double perovskites, which provide rich chemical and structural diversities to host different magnetic elements. In our iron-alloyed double perovskite, Cs2Ag(Bi:Fe)Br6, Fe3+ replaces Bi3+ and forms FeBr6 clusters that homogenously distribute throughout the double perovskite crystals. We observe a strong temperature-dependent magnetic response at temperatures below 30 K, which is tentatively attributed to a weak ferromagnetic or antiferromagnetic response from localized regions. We anticipate that this work will stimulate future efforts in exploring this simple yet efficient approach to develop new spintronic materials based on lead-free double perovskites.

Hierarchical computational screening of layered lead-free metal halide perovskites for optoelectronic applications

2021 ◽  
Author(s):  
Qiuqi Li ◽  
Dan Cao ◽  
Xueyin Liu ◽  
Xiangyu Zhou ◽  
Xiaoshuang Chen ◽  
...  
Keyword(s):  
High Stability ◽  
Screening Method ◽  
Optoelectronic Properties ◽  
Metal Halide ◽  
Lead Free ◽  
Computational Screening ◽  
Halide Perovskites ◽  
Optoelectronic Applications ◽  
Free Metal

A hierarchical computational screening method is used to find layered lead-free metal halide perovskites with high stability and outstanding optoelectronic properties.

scholarly journals Lead-Free Halide Double Perovskites: A Review of the Structural, Optical, and Stability Properties as Well as Their Viability to Replace Lead Halide Perovskites

Metals ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 667 ◽  
Author(s):  
Edson Meyer ◽  
Dorcas Mutukwa ◽  
Nyengerai Zingwe ◽  
Raymond Taziwa
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Lead Free ◽  
Double Perovskites ◽  
Stability Properties ◽  
Perovskite Materials ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
Light Absorbers ◽  
Lead Halide

Perovskite solar cells employ lead halide perovskite materials as light absorbers. These perovskite materials have shown exceptional optoelectronic properties, making perovskite solar cells a fast-growing solar technology. Perovskite solar cells have achieved a record efficiency of over 20%, which has superseded the efficiency of Gräztel dye-sensitized solar cell (DSSC) technology. Even with their exceptional optical and electric properties, lead halide perovskites suffer from poor stability. They degrade when exposed to moisture, heat, and UV radiation, which has hindered their commercialization. Moreover, halide perovskite materials consist of lead, which is toxic. Thus, exposure to these materials leads to detrimental effects on human health. Halide double perovskites with A2B′B″X6 (A = Cs, MA; B′ = Bi, Sb; B″ = Cu, Ag, and X = Cl, Br, I) have been investigated as potential replacements of lead halide perovskites. This work focuses on providing a detailed review of the structural, optical, and stability properties of these proposed perovskites as well as their viability to replace lead halide perovskites. The triumphs and challenges of the proposed lead-free A2B′B″X6 double perovskites are discussed here in detail.

Lead-free double perovskites Cs2InCuCl6 and (CH3NH3)2InCuCl6: electronic, optical, and electrical properties

Nanoscale ◽  
2019 ◽  
Vol 11 (23) ◽  
pp. 11173-11182 ◽  
Author(s):  
Hung Q. Pham ◽  
Russell J. Holmes ◽  
Eray S. Aydil ◽  
Laura Gagliardi
Keyword(s):  
Electrical Properties ◽  
Band Gap ◽  
Lead Free ◽  
Double Perovskites ◽  
Optical And Electrical Properties ◽  
Optoelectronic Applications

Two indium-based double perovskites, Cs2InCuCl6 and (CH3NH3)2InCuCl6, were proposed as promising materials for photovoltaic and optoelectronic applications with a suitable band gap and exceptional optical and electrical properties.

Recent Advances and Optoelectronic Applications of Lead‐Free Halide Double Perovskites

2020 ◽  
Vol 26 (71) ◽  
pp. 16975-16984
Author(s):  
Lei Lu ◽  
Xiong Pan ◽  
Junhua Luo ◽  
Zhihua Sun
Keyword(s):  
Lead Free ◽  
Double Perovskites ◽  
Recent Advances ◽  
Optoelectronic Applications

scholarly journals Lead-Free Halide Double Perovskite Materials: A New Superstar Toward Green and Stable Optoelectronic Applications

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Liang Chu ◽  
Waqar Ahmad ◽  
Wei Liu ◽  
Jian Yang ◽  
Rui Zhang ◽  
...  
Keyword(s):  
Double Perovskite ◽  
Lead Free ◽  
Perovskite Materials ◽  
Optoelectronic Applications

Thickness-induced band-gap engineering in lead-free double perovskite Cs2AgBiBr6for highly efficient photocatalysis

2021 ◽  
Author(s):  
Bing-Hao Wang ◽  
Bin Gao ◽  
Jin-Rong Zhang ◽  
Lang Chen ◽  
Guo Jun-Kang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Double Perovskite ◽  
Lead Free ◽  
Double Perovskites ◽  
Two Dimensional ◽  
Band Gap Engineering ◽  
Highly Efficient ◽  
Photovoltaic Solar Cells

In recent years, two-dimensional (2D) lead-free double perovskites have been attracting much attention because of their unique performance for photovoltaic solar cells andphotocatalysis. Nonetheless, how the thickness affects the photoelectric...

scholarly journals Bandgap Engineering of Lead-Free Double Perovskite Cs2 AgBiBr6 through Trivalent Metal Alloying

2017 ◽  
Vol 56 (28) ◽  
pp. 8158-8162 ◽  
Author(s):  
Ke-zhao Du ◽  
Weiwei Meng ◽  
Xiaoming Wang ◽  
Yanfa Yan ◽  
David B. Mitzi
Keyword(s):  
Double Perovskite ◽  
Lead Free ◽  
Bandgap Engineering ◽  
Trivalent Metal

scholarly journals Influence of Ni doping in a lead-halide and a lead-free halide perovskites for optoelectronic applications

AIP Advances ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 125321 ◽  
Author(s):  
M. N. Islam ◽  
M. A. Hadi ◽  
J. Podder
Keyword(s):  
Lead Free ◽  
Ni Doping ◽  
Halide Perovskites ◽  
Optoelectronic Applications ◽  
Lead Halide
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