Wavelength-Shift-Based Colorimetric Sensing for Peroxide Number of Edible Oil Using CsPbBr3 Perovskite Nanocrystals

Thermal degradation of luminescence in inorganic perovskite CsPbBr3 nanocrystals.

The luminescence properties of inorganic perovskite CsPbBr3 nanocrystals (NCs) with emissions of 492 and 517 nm under thermal annealing treatment were studied by temperature-dependent photoluminescence (PL) spectroscopy. The CsPbBr3 NCs were annealed in vacuum at various temperatures. It was found that the NCs exhibited significant thermal degradation of PL at thermal annealing temperatures abo...

Solution-Grown CsPbBr3 Perovskite Single Crystals for Photon Detection

Postsynthesis Transformation of Insulating Cs4PbBr6 Nanocrystals into Bright Perovskite CsPbBr3 through Physical and Chemical Extraction of CsBr

Perovskite-related Cs4PbBr6 nanocrystals present a "zero-dimensional" crystalline structure where adjacent [PbBr6]4- octahedra do not share any corners. We show in this work that these nanocrystals can be converted into "three-dimensional" CsPbBr3 perovskites by extraction of CsBr. This conversion drastically changes the optoelectronic properties of the nanocrystals that become highly photolumi...

Correction to “Hybridization of Single Nanocrystals of Cs4PbBr6 and CsPbBr3”

■ REFERENCES (1) Tizei, L. H. G.; Lin, Y.-C.; Mukai, M.; Sawada, H.; Lu, A.-Y.; Li, L.J.; Kimoto, K.; Suenaga, K. Exciton Mapping at subwavelength scales in two-dimensional materials. Phys. Rev. Lett. 2015, 114, 107601. (2) Sasaki, T.; Sawada, H.; Hosokawa, F.; Sato, Y.; Suenaga, K. Aberration-corrected STEM/TEM imaging at 15kV. Ultramicroscopy 2014, 145, 50−55. (3) Velaźquez, M.; Ferrier, A.; ...

Paper-based vapor detection of hydrogen peroxide: colorimetric sensing with tunable interface.

Vapor detection of hydrogen peroxide still remains challenging for conventional sensing techniques, though such vapor detection implies important applications in various practical areas, including locating IEDs. We report herein a new colorimetric sensor system that can detect hydrogen peroxide vapor down to parts per billion level. The sensory materials are based on the cellulose microfibril n...