A2AgCrCl6 (A = Li, Na, K, Rb, Cs) halide double perovskites: a transition metal-based semiconducting material series with appreciable optical characteristics

2020 ◽  
Vol 22 (42) ◽  
pp. 24337-24350
Author(s):  
Pradeep R. Varadwaj
Keyword(s):  
Transition Metal ◽  
Optoelectronic Properties ◽  
Optical Characteristics ◽  
Double Perovskites ◽  
Semiconducting Material ◽  
Theoretical Examination ◽  
Material Series

The theoretical examination of the geometric, energetic, phonon and optoelectronic properties of cubic and hexagonal A2AgCrCl6 (A = Cs, Rb, K, Na, Li) using meta-GGA SCAN-rVV10 has led us to identify cubic Cs2AgCrCl6 and Rb2AgCrCl6 as two dynamically stable double perovskites, with impressive optical features.

scholarly journals Investigations on Crystalline Perfection, Raman Spectra and Optical Characteristics of Transition Metal (Ru) Co-Doped Mg:LiNbO3 Single Crystals

ACS Omega ◽  
2021 ◽  
Author(s):  
M. K. Raseel Rahman ◽  
B. Riscob ◽  
Rajeev Bhatt ◽  
Indranil Bhaumik ◽  
Sarveswaran Ganesamoorthy ◽  
...  
Keyword(s):  
Transition Metal ◽  
Single Crystals ◽  
Raman Spectra ◽  
Optical Characteristics ◽  
Crystalline Perfection ◽  
Co Doped

Plasmonic-based sensitivity enhancement of a Goos–Hänchen shift biosensor using transition metal dichalcogenides: a theoretical insight

2020 ◽  
Vol 44 (37) ◽  
pp. 16144-16151 ◽  
Author(s):  
Yan Guo ◽  
Nishtha Manish Singh ◽  
Chandreyee Manas Das ◽  
Qingling Ouyang ◽  
Lixing Kang ◽  
...  
Keyword(s):  
Transition Metal ◽  
Transition Metal Dichalcogenides ◽  
Sensitivity Enhancement ◽  
Optoelectronic Properties ◽  
Two Dimension ◽  
Metal Dichalcogenides ◽  
Layered Transition Metal ◽  
Theoretical Insight

Layered transition metal dichalcogenides (TMDCs) within two dimension (2D) have been gaining widespread consideration due to their exclusive optoelectronic properties.

Morphological and Optical Characteristics of Transition Metal Doped PVT Grown Zinc Selenide Single Crystal

2019 ◽  
Vol 54 (4) ◽  
pp. 1800231 ◽  
Author(s):  
Narsingh Bahadur Singh ◽  
Ching-Hua Su ◽  
Bradley Arnold ◽  
Fow-Sen Choa ◽  
Brian Cullum ◽  
...  
Keyword(s):  
Transition Metal ◽  
Single Crystal ◽  
Zinc Selenide ◽  
Optical Characteristics ◽  
Metal Doped

Optoelectronic properties of transition metal and rare earth doped epitaxial layers on InP for magneto-optics

1996 ◽  
Vol 25 (5) ◽  
pp. 709-713 ◽  
Author(s):  
B. J. H. Stadler ◽  
K. Vaccaro ◽  
A. Davis ◽  
G. O. Ramseyer ◽  
E. A. Martin ◽  
...  
Keyword(s):  
Rare Earth ◽  
Transition Metal ◽  
Optoelectronic Properties ◽  
Epitaxial Layers ◽  
Rare Earth Doped

scholarly journals Recent Advancements in Crystalline Pb-Free Halide Double Perovskites

Crystals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 62 ◽  
Author(s):  
Muhammad Usman ◽  
Qingfeng Yan
Keyword(s):  
Large Scale ◽  
Optoelectronic Properties ◽  
Double Perovskites ◽  
Ambient Conditions ◽  
Photoelectric Properties ◽  
Potential Alternative ◽  
High Carrier Mobility ◽  
Halide Perovskites ◽  
Synthesis Composition ◽  
Lead Halide

Lead halide perovskites have gained more and more attention because of their ease of synthesis and excellent photoelectric properties including a large absorption coefficient, long carrier lifetime, long carrier diffusion length, and high carrier mobility. However, their toxicity, instability, and phase degradation in ambient environments impede their large-scale applications. To address these concerns, it is desirable to find stable alternative halide perovskites without toxicity and with comparable optoelectronic properties to lead-based perovskites. Over the years, a considerable number of lead-free halide perovskites have been added to this family of materials, including A2B’B’’X6, A2BX6, and A3B2X9 type perovskites. Among these, double perovskites with the general formula A2B’B’’X6 are deemed to be a potential alternative to lead halide perovskites as they possess good stability under ambient conditions and excellent optoelectronic properties. In this review, recent progress in exploring Pb-free halide double perovskites is highlighted. The synthesis, composition-tuning, physical properties, and applications of representative 3D, 2D, and nanocrystal A2B’B’’X6 double perovskites are introduced. In addition, perspectives about current challenges and solutions in this field are also provided.

scholarly journals Efficient Emission in Halide Layered Double Perovskites: The Role of Sb3+ Substitution in Cs4Cd1–xMnxBi2Cl12 Phosphors

2020 ◽  
Author(s):  
Brenda Vargas ◽  
Eduardo Coutiño-Gonzalez ◽  
Oscar Ovalle-Encinia ◽  
Citlali Sánchez-Aké ◽  
Diego Solis-Ibarra
Keyword(s):  
Optoelectronic Properties ◽  
Double Perovskites ◽  
Spin Orbit Coupling ◽  
Fixed Amount ◽  
Electronic Delocalization ◽  
The Subject ◽  
Halide Perovskites ◽  
Pl Emission ◽  
Intense Research

Layered halide perovskites and double perovskites optoelectronic properties have recently been the subject of intense research. Layered double perovskites represent the merging of both worlds, and as such, have the potential to further expand the already vast space of optoelectronic properties and applications of halide perovskites. Despite having more than 40 known members, to date, only the <111>-oriented layered double perovskites: Cs<sub>4</sub>Cd<sub>1</sub>–<sub>x</sub>Mn<sub>x</sub><b>Bi</b><sub>2</sub>Cl<sub>12</sub>, have shown efficient photoluminescence (PL). In this work, we replaced Bi with Sb to further investigate the electronic structure and PL properties of these materials, resulting in two new families of layered inorganic perovskites alloys with full solubility. The first family, Cs<sub>4</sub>Cd<sub>1</sub>–<sub>x</sub>Mn<b>Sb</b><sub>2</sub>Cl<sub>12</sub>, exhibits a PL emission at 605 nm ascribed to Mn<sup>2+</sup> centers in octahedral coordination, and a maximum photoluminescence quantum yield PLQY of 28.5%. The second family of alloys, also with full solubility, Cs<sub>4</sub>Cd<sub>0.8</sub>Mn<sub>0.2</sub>(Sb<sub>1</sub>–<sub>y</sub>Bi<sub>y</sub>)<sub>2</sub>Cl<sub>12</sub>, contains a fixed amount of Mn<sup>2+</sup> and Cd<sup>2+</sup> cations but different concentrations of the trivalent metals. This variability allows the tuning of the PL emission from 603 nm to 614 nm. We show that the decreased efficiency of the Cs<sub>4</sub>Cd<sub>1</sub>–<sub>x</sub>Mn<sub>x</sub>Sb<sub>2</sub>Cl<sub>12</sub>family compared to Cs<sub>4</sub>Cd<sub>1</sub>–<sub>x</sub>Mn<sub>x</sub><b>Bi</b><sub>2</sub>Cl<sub>12</sub>, is mostly due to a decreased spin-orbit coupling in Sb and the subsequent increased electronic delocalization compared to the Bi alloys, reducing the energy transfer to Mn<sup>2+</sup> centers. This work lays out a roadmap to understand and achieve high photoluminescence efficiencies in layered double perovskites.<p></p>

Sign in / Sign up

Export Citation Format

Share Document