Structural peculiarities, point defects and luminescence in Bi-doped CsCdX3 (X = Cl, Br) single crystals

Vtyurina, D. N.; Kaurova, Irina A.; Кузьмичева, Г. М.; Rybakov, Victor B.; Chernyshov, Dmitry; Khramov, Evgeny V.; Firstov, S. V.; Корчак, В. Н.

doi:10.1016/j.jallcom.2019.06.308

Cited by 9 publications

(11 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The d-spacing of the CCC:Mn phase is 0.253 nm, which may be due to the shrinkage of the lattice while introducing Mn 2+ . 40 The elemental mapping images as well as EDS patterns further confirm the exact stoichiometric compositions of CCC, CCC:Mn, and CMCH. The Mn 2+ ions are evenly distributed throughout the lattice in CCC:Mn crystals.…”

Section: Resultsmentioning

confidence: 53%

“…The d -spacings of CCC and CMCH are measured to be 0.641 and 0.167 nm, which are well in accordance with those of the (100) plane in CCC and the (241) plane in CMCH, respectively. The d -spacing of the CCC:Mn phase is 0.253 nm, which may be due to the shrinkage of the lattice while introducing Mn 2+ . The elemental mapping images as well as EDS patterns further confirm the exact stoichiometric compositions of CCC, CCC:Mn, and CMCH.…”

Section: Results and Discussionmentioning

confidence: 67%

See 1 more Smart Citation

Large Spectral Shift of Mn²⁺ Emission Due to the Shrinkage of the Crystalline Host Lattice of the Hexagonal CsCdCl₃ Crystals and Phase Transition

et al. 2022

View full text Add to dashboard Cite

All-inorganic halide perovskite crystals are considered excellent optical host lattices for various dopants to obtain wavelength-tunable emissions with ultra-broad bands even over a wide spectral range. Here, a series of Mn2+-doped bulk ligand-free CsCdCl3 (CCC) perovskite crystals with a hexagonal shape and size of about 1 millimeter (mm) have been prepared by a facile hydrothermal method. These CCC:Mn2+ (CCC:Mn) crystals emit the representative orange-red photoluminescence (PL) of Mn2+ (4T1(G)-6A1(S)) in the centers of hexagonal octahedrons coordinated with six Cl– ions. A fine-tuning of the Mn2+ concentration from 1 to 50 mol % Cd2+ induces a substantial red shift of emission spectra from 570 to 630 nm due to the shrinkage of the crystalline host lattice, and the maximum intensity of emission is achieved at 20 mol % Mn2+ doping. A further increase in the Mn2+ concentration causes a decrease of the PL intensity due to the phase transition from CCC to CsMnCl3·2H2O (CMCH). The strong excitation bands at 360, 370, 420, and 440 nm can make the excitation of the emissive CCC:Mn crystals possible with ultraviolet (UV) and blue chips for application in white light-emitting diodes (WLEDs). The similarity of the Mn2+-concentration-dependent emission spectra excited by various wavelengths indicates that there is only one type of site for Mn2+ occupation in CCC.

show abstract

Section: Resultsmentioning

confidence: 53%

Section: Results and Discussionmentioning

confidence: 67%

Large Spectral Shift of Mn²⁺ Emission Due to the Shrinkage of the Crystalline Host Lattice of the Hexagonal CsCdCl₃ Crystals and Phase Transition

et al. 2022

View full text Add to dashboard Cite

show abstract

“…158 ABCl 3 :Bi (A = K, Rb, Cs; B = Mg, Cd) series was found to show NIR luminescence with sub-millisecond lifetimes under red light excitation, the origin of which is still in debate. 193,194 Recently, Chen et al 191 have considered the series as prototype systems to provide a systematic understanding of the mechanisms of Bi + -related long-lived NIR luminescence. The combination of the multi-configurational quantum-chemical calculations and the constrained occupancy approach demonstrates the NIR luminescence from the 3 P 1 !…”

Section: P-p Transition Of Bi +mentioning

confidence: 99%

Near‐infrared emitting metal halide materials: Luminescence design and applications

Liu,

Dang,

Zhang

et al. 2024

InfoMat

View full text Add to dashboard Cite

Near‐infrared (NIR) luminescent metal halide (LMH) materials have attracted great attention in various optoelectronic applications due to their low‐temperature solution‐processable synthesis, abundant crystallographic/electronic structures, and unique optoelectronic properties. However, some challenges still remain in their luminescence design, performance improvement, and application assignments. This review systematically summarizes the development of NIR LMHs through classifying NIR luminescent origins into four major categories: band‐edge emission, self‐trapped exciton (STE) emission, ion emission, and defect‐related emission. The luminescence mechanisms of different types of NIR LMHs are discussed in detail by analyzing typical examples. Reasonable strategies for designing and optimizing luminescence/optoelectronic properties of NIR LMHs are summarized, including bandgap engineering, self‐trapping state engineering, chemical composition modification, energy transfer, and other auxiliary strategies such as improvement of synthesis scheme and post‐processing. Furthermore, application prospects based on the optoelectronic devices are revealed, including phosphor‐converted light‐emitting diodes (LEDs), electroluminescent LEDs, photodetectors, solar cells, and x‐ray scintillators, as well as demonstrations of some related practical applications. Finally, the existing challenges and future perspectives on the development of NIR LMH materials are critically proposed. This review aims to provide general understanding and guidance for the design of high‐performance NIR LMHs materials.image

show abstract

“…For the Bi-doped CsCdCl 3 (CsCdCl 3 :Bi) and CsCdBr 3 (CsCdBr 3 :Bi) growth, double chlorides and bromides taken in a molar ratio of CdCl 2 :CsCl:BiCl 3 = 59.8:39.8:0.4 and CdBr 2 :CsBr:BiBr 3 = 54.5:44.5:1, respectively, were used [111]. A metallic bismuth was added in a molar ratio of Bi Me /BiCl 3 = 0.03 and Bi Me /BiBr 3 = 1, assuming a formation of Bi 1+ ions.…”

Section: Perovskite Family Compounds and Othersmentioning

confidence: 99%

Peculiar Structural Effects in Pure and Doped Functional Single Crystals of Complex Compositions

Кузьмичева

Kaurova

2020

Molecules

Self Cite

View full text Add to dashboard Cite

Results of a detailed structural characterization of nominally pure and doped single crystals of scheelite, eulytin, and perovskite families obtained by melt methods were considered and analyzed. The influence of growth and post-growth annealing conditions on actual compositions of crystals is shown. The reasons for the coloration of the crystals are explained. A change in crystal symmetry due to crystal–chemical and growth reasons is considered. The use of structural analysis and X-ray absorption spectroscopy is substantiated to reveal the role of activator ions in the formation of statistical and local structures, respectively. A relationship between the distribution of activator ions over crystallographic sites and photoluminescent parameters of materials is established, which allows selecting optimal systems for the application. The combined results of studying single-crystal compounds of other classes (huntite, sillenite, whitlockite, garnet, tetragonal bronzes) allow formulating and summarizing structural effects that appeared in the systems and caused by various factors and, in many cases, due to the local environment of cations. A principal difference in the structural behavior of solid solutions and doped compounds is shown. The methodology developed for single-crystal samples of complex compositions can be recommended for the systematic structural studies of functional materials of different compositions.

show abstract

Structural peculiarities, point defects and luminescence in Bi-doped CsCdX3 (X = Cl, Br) single crystals

Cited by 9 publications

References 26 publications

Large Spectral Shift of Mn²⁺ Emission Due to the Shrinkage of the Crystalline Host Lattice of the Hexagonal CsCdCl₃ Crystals and Phase Transition

Large Spectral Shift of Mn²⁺ Emission Due to the Shrinkage of the Crystalline Host Lattice of the Hexagonal CsCdCl₃ Crystals and Phase Transition

Near‐infrared emitting metal halide materials: Luminescence design and applications

Peculiar Structural Effects in Pure and Doped Functional Single Crystals of Complex Compositions

Contact Info

Product

Resources

About

Structural peculiarities, point defects and luminescence in Bi-doped CsCdX3 (X = Cl, Br) single crystals

Cited by 9 publications

References 26 publications

Large Spectral Shift of Mn2+ Emission Due to the Shrinkage of the Crystalline Host Lattice of the Hexagonal CsCdCl3 Crystals and Phase Transition

Large Spectral Shift of Mn2+ Emission Due to the Shrinkage of the Crystalline Host Lattice of the Hexagonal CsCdCl3 Crystals and Phase Transition

Near‐infrared emitting metal halide materials: Luminescence design and applications

Peculiar Structural Effects in Pure and Doped Functional Single Crystals of Complex Compositions

Contact Info

Product

Resources

About

Large Spectral Shift of Mn²⁺ Emission Due to the Shrinkage of the Crystalline Host Lattice of the Hexagonal CsCdCl₃ Crystals and Phase Transition

Large Spectral Shift of Mn²⁺ Emission Due to the Shrinkage of the Crystalline Host Lattice of the Hexagonal CsCdCl₃ Crystals and Phase Transition