Thermal degradation of luminescence in inorganic perovskite CsPbBr3 nanocrystals
Literature Information
Xi Yuan, Xuemin Hou, Ji Li, Chaoqun Qu, Wenjin Zhang, Haibo Li
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 above 320 K. The transmission electron microscopy, X-ray diffraction and PL spectroscopy demonstrated that the size of NCs almost kept constant at thermal annealing temperatures below 360 K while it significantly enlarged at higher thermal temperatures above 380 K. The PL intensities, peak energies and linewidths of the annealed NCs, as a function of temperature, are discussed in detail. The PL degradation of the NCs was related to the formation of nonradiative recombination centers due to the loss of ligands and growth of NCs under thermal annealing.
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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.










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![(3R,4aR,7aS,9aR,10S,11R,13aR,13bS,15aS,15bR)-3,11-Dihydroxy-10-(hydroxymethyl)-4,4,7a,10,13a,15b-hexamethyl-1,2,3,4,4a,7,7a,8,9,9a,10,11,12,13,13a,13b,14,15,15a,15b-icosahydro-5H-naphtho[2',1':4,5]cyc
lohepta[1,2-a]naphthalen-5-one structure (3R,4aR,7aS,9aR,10S,11R,13aR,13bS,15aS,15bR)-3,11-Dihydroxy-10-(hydroxymethyl)-4,4,7a,10,13a,15b-hexamethyl-1,2,3,4,4a,7,7a,8,9,9a,10,11,12,13,13a,13b,14,15,15a,15b-icosahydro-5H-naphtho[2',1':4,5]cyc
lohepta[1,2-a]naphthalen-5-one structure](https://static.chemtradehub.com/structs/538/53800-21-8-9f18.webp)

