Journal ArticleDOI
Phase transitions in ternary caesium lead bromide
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In this article, phase transitions in ternary caesium lead bromide (CsPbBr3) were studied by means of DSC, TMA and high temperature X-ray diffraction.Abstract:
Phase transitions in ternary caesium lead bromide (CsPbBr3) were studied by means of DSC, TMA and high temperature X-ray diffraction. The samples were prepared from the solution by water evaporation and from the melt. on the DSC curves as well as on the temperature dependence of the lattice constants of CsPbBr3 only two effects were found belonging to the earlier published phase transitions at 88 and 130°C and no further effects. Linear thermal expansion coefficient α of individual CsPbBr3 modifications were calculated from both TMA and high temperature X-ray diffraction. The structural parameters of the room temperature orthorhombic phase were refined and the results are presented. CsPbBr3 prepared from the solution contained about 10% of CsPb2Br5 and so the DSC curve of pure CsPb2Br5 was also measured and an effect at a temperature of 68.5°C was found.read more
Citations
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CsPbX3 Quantum Dots for Lighting and Displays: Room-Temperature Synthesis, Photoluminescence Superiorities, Underlying Origins and White Light-Emitting Diodes
TL;DR: In this paper, a room-temperature (RT) synthesis of CsPbX3@X quantum-well band alignment is proposed to guarantee the excitons generation and high-rate radiative recombination at RT.
Journal ArticleDOI
Bandgap-tunable cesium lead halide perovskites with high thermal stability for efficient solar cells
Rebecca J. Sutton,Giles E. Eperon,Laura Miranda,Elizabeth S. Parrott,Brett A. Kamino,Jay B. Patel,Maximilian T. Hörantner,Michael B. Johnston,Amir A. Haghighirad,David T. Moore,Henry J. Snaith +10 more
TL;DR: In this paper, the highest reported efficiency cesium lead halide perovskite solar cells are realized by tuning the bandgap and stabilizing the black perovsite phase at lower temperatures.
Journal ArticleDOI
Crystal Growth of the Perovskite Semiconductor CsPbBr3: A New Material for High-Energy Radiation Detection
Constantinos C. Stoumpos,Christos D. Malliakas,John A. Peters,Zhifu Liu,Maria Sebastian,Jino Im,Thomas C. Chasapis,Arief Wibowo,Duck Young Chung,Arthur J Freeman,Bruce W. Wessels,Mercouri G. Kanatzidis +11 more
TL;DR: The perovskite compound CsPbBr3 as mentioned in this paper is a direct band gap semiconductor which meets most of the requirements for successful detection of X and γ-ray radiation, such as high attenuation, high resistivity, and significant photoconductivity response, with detector resolution comparable to that of commercial, state-of-the-art materials.
Journal ArticleDOI
Cesium Lead Halide Perovskites with Improved Stability for Tandem Solar Cells
Rachel E. Beal,Daniel J. Slotcavage,Tomas Leijtens,Andrea R. Bowring,Rebecca A. Belisle,William H. Nguyen,George F. Burkhard,Eric T. Hoke,Michael D. McGehee +8 more
TL;DR: A semiconductor that can be processed on a large scale with a bandgap around 1.8 eV could enable the manufacture of highly efficient low cost double-junction solar cells on crystalline Si.
Journal ArticleDOI
Colloidal CsPbBr3 Perovskite Nanocrystals: Luminescence beyond Traditional Quantum Dots.
Abhishek Swarnkar,Ramya Chulliyil,Vikash Kumar Ravi,Mir Irfanullah,Arindam Chowdhury,Angshuman Nag +5 more
TL;DR: This work highlights the advantages in both ensemble and single-nanocrystal PL of colloidal CsPbBr3 nanocrystals (NCs) over the traditional cQDs and investigates batch-to-batch reproducibility of NCs exhibiting PL peaks within ±1 nm.
References
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The inorganic crystal structure data base
TL;DR: An inorganic crystal structure data base is described which will, when completed in the next year, contain details of all the 23 OOO published structum of inorganic crystals.
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Structural Phase Transitions in CsPbBr 3
TL;DR: In this paper, the phase transition at 130°C is caused by condensation of the M 3 mode at the M point of the cubic Brillouin zone, while the one at 88°C results from condensing of the doubly degenerate R 25 -like mode (Z 9 mode) at the Z point of a tetragonal Brilloupin zone.
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Structural phase transitions of the polymorphs of CsSnI3 by means of rietveld analysis of the X-ray diffraction.
TL;DR: The successive phase transitions of the polymorphs of CsSnI3 were studied by means of the powder X-ray diffraction and their crystal structures were analyzed at three different temperatures by the...
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Lead bromide and ternary alkali lead bromide single crystals — growth and emission properties
TL;DR: In this paper, single crystals of PbBr 2, RbPb 2 Br 5 and CsPbBr 3 were grown by the Bridgman method from starting materials purified by bromination with bromine and hydrogen bromide and by zone refining and were tested by measurements of the low-temperature exciton luminescence and decay kinetics.
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Ultrasonic Velocity around the Successive Phase Transition Points of CsPbBr 3
TL;DR: In this paper, sound velocities in perovskite-type crystal CsPbBr 3 have been measured around the structural phase transition points at 88 and 130°C.