Cs2AgBiBr6−xClx solid solutions – band gap engineering with halide double perovskites

2019 ◽  
Vol 7 (31) ◽  
pp. 9686-9689 ◽  
Author(s):  
Matthew B. Gray ◽  
Eric T. McClure ◽  
Patrick M. Woodward
Keyword(s):  
Solid Solution ◽  
Band Gap ◽  
Solid Solutions ◽  
Double Perovskite ◽  
Double Perovskites ◽  
Band Gap Engineering ◽  
Vegard’S Law ◽  
Upward Deviation

The halide double perovskite solid solution Cs2AgBiBr6−xClx has been investigated and found to exhibit a band gap that increases from 2.2 eV to 2.8 eV as the Cl− content increases, with an upward deviation from Vegard's law when x > 5.

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 The lattice spacings of solid solutions of different elements in aluminium

1948 ◽  
Vol 193 (1032) ◽  
pp. 1-24 ◽  
Keyword(s):  
Solid Solution ◽  
Solid Solutions ◽  
Lattice Spacing ◽  
Relative Volume ◽  
Valency Electron ◽  
Vegard’S Law ◽  
Copper Zinc ◽  
Composition Curve ◽  
The Difference ◽  
D Values

Measurements have been made of the lattice spacings of solid solutions of lithium, magnesium, silicon, copper, zinc, germanium and silver in aluminium. The lattice of aluminium is expanded by the solution of magnesium or germanium, and contracted by the solution of lithium, silicon, copper or zinc. No change in lattice spacing can be detected when silver is dissolved in aluminium, although microscopic examination shows that a solid solution is formed, and this is confirmed by the absence of any diffraction lines other than those of the solid solution in aluminium. If the lattice spacing/composition curve for dilute solutions is extrapolated to 100% of solute, the resulting lattice spacing refers to a hypothetical face-centred cubic modification of the solute, and the corresponding closest distance of approach of the atoms is called the apparent atomic diameter (A. A. D.) of the solute when in solution in aluminium. Previous work enables the corresponding A. A. D. values to be deduced for the above solute elements when dissolved in univalent copper, silver or gold, and in divalent magnesium. The differences between the A. A. D. values of a given element when dissolved in various solvents are discussed, and it is suggested that they are controlled by the interplay of four factors: (1) the relative volume per valency electron in crystals of the solvent and solute, (2) the relative radii of the ions of solvent and solute, (3) Brillouin zone effects, and (4) the difference between solvent and solute in the electrochemical series. If this line of approach adopted be correct, it follows that it is only in exceptional circumstances that the so-called Vegard’s law will apply to metallic solid solutions.

High-Pressure Band-Gap Engineering in Lead-Free Cs2 AgBiBr6 Double Perovskite

2017 ◽  
Vol 56 (50) ◽  
pp. 15969-15973 ◽  
Author(s):  
Qian Li ◽  
Yonggang Wang ◽  
Weicheng Pan ◽  
Wenge Yang ◽  
Bo Zou ◽  
...  
Keyword(s):  
High Pressure ◽  
Band Gap ◽  
Double Perovskite ◽  
Lead Free ◽  
Band Gap Engineering

High-Pressure Band-Gap Engineering in Lead-Free Cs2 AgBiBr6 Double Perovskite

2017 ◽  
Vol 129 (50) ◽  
pp. 16185-16189 ◽  
Author(s):  
Qian Li ◽  
Yonggang Wang ◽  
Weicheng Pan ◽  
Wenge Yang ◽  
Bo Zou ◽  
...  
Keyword(s):  
High Pressure ◽  
Band Gap ◽  
Double Perovskite ◽  
Lead Free ◽  
Band Gap Engineering

scholarly journals Color tuning of Bi3+-doped double-perovskite Ba2(Gd1−x,Lux)NbO6 (0 ≤ x ≤ 0.6) solid solution compounds via crystal field modulation for white LEDs

RSC Advances ◽  
2020 ◽  
Vol 10 (43) ◽  
pp. 25500-25508
Author(s):  
Xufang Tang ◽  
Dingfeng Jin ◽  
Jun Zhao ◽  
Min Jin
Keyword(s):  
Solid Solution ◽  
Rare Earth ◽  
Crystal Field ◽  
Solid Solutions ◽  
Double Perovskite ◽  
Color Tuning ◽  
White Leds ◽  
Color Tunable ◽  
Field Modulation

Nowadays, rare-earth-free color-tunable solid solutions are receiving great attention.

Mixed Halide Lead-free Double Perovskite Alloys for Band Gap Engineering

2020 ◽  
Vol 3 (8) ◽  
pp. 7364-7371
Author(s):  
Julian F. R. V. Silveira ◽  
Juarez L. F. Da Silva
Keyword(s):  
Band Gap ◽  
Double Perovskite ◽  
Lead Free ◽  
Band Gap Engineering

scholarly journals Electronic, magnetic, optical and thermoelectric properties of Ca2Cr1−xNixOsO6 double perovskites

RSC Advances ◽  
2020 ◽  
Vol 10 (27) ◽  
pp. 16179-16186 ◽  
Author(s):  
Shalika R. Bhandari ◽  
D. K. Yadav ◽  
B. P. Belbase ◽  
M. Zeeshan ◽  
B. Sadhukhan ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Band Gap ◽  
Thermoelectric Properties ◽  
Density Functional ◽  
Double Perovskite ◽  
Density Functional Theory Calculations ◽  
Double Perovskites ◽  
Functional Theory ◽  
Perovskite Material

With the help of density functional theory calculations, we explored the recently synthesized double perovskite material Ca2CrOsO6 and found it to be a ferrimagnetic insulator with a band gap of ∼0.6 eV.

Band Gap Engineering in Cs2(NaxAg1–x)BiCl6 Double Perovskite Nanocrystals

2019 ◽  
Vol 10 (17) ◽  
pp. 5173-5181 ◽  
Author(s):  
Raman Singh Lamba ◽  
Pooja Basera ◽  
Saswata Bhattacharya ◽  
Sameer Sapra
Keyword(s):  
Band Gap ◽  
Double Perovskite ◽  
Band Gap Engineering ◽  
Perovskite Nanocrystals

Solubility and crystallographic facet tailoring of (GaN)1−x(ZnO)x pseudobinary solid-solution nanostructures as promising photocatalysts

Nanoscale ◽  
2016 ◽  
Vol 8 (6) ◽  
pp. 3694-3703 ◽  
Author(s):  
Jing Li ◽  
Baodan Liu ◽  
Wenjin Yang ◽  
Yujin Cho ◽  
Xinglai Zhang ◽  
...  
Keyword(s):  
Solid Solution ◽  
Band Gap ◽  
Band Gaps ◽  
Morphology Evolution ◽  
Band Gap Engineering ◽  
Crystallographic Facets

(GaN)1−x(ZnO)x solid solution nanorods with tunable crystallographic facets and controllable band-gaps are obtained and the ZnO solubility plays a key role in governing the morphology evolution and band-gap engineering.

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