Tsiwah, EA;
Ding, Y;
Li, Z;
Zhao, Z;
Wang, M;
Hu, C;
Liu, X;
... Xie, Y; + view all
(2017)
One-pot scalable synthesis of all-inorganic perovskite nanocrystals with tunable morphology, composition and photoluminescence.
CrystEngComm
, 19
(46)
pp. 7041-7049.
10.1039/c7ce01749a.
Preview |
Text
Wang Manuscript - without track changes.pdf - Accepted Version Download (1MB) | Preview |
Abstract
This study demonstrates a facile and general one-pot synthetic approach for all-inorganic colloidal cesium lead halide (CsPbX 3 , X = Cl, Br, I, mixed Cl/Br, Br/I) perovskite nanocrystals (NCs) by directly heating the precursors/solvent/ligands. In contrast to typical routes, these reactions are conducted in open air, requiring neither high temperature dissolution nor a vacuum/inert atmosphere. The composition, shape and size of the as-synthesized NCs can be finely tuned by varying the reaction parameters such as temperature and time, ligand species and precursor halide ratios. CsPbX 3 morphologies may be varied from perovskite nanoplatelets (NPLs) to nanosheets and sphere-like NCs, each with tunable absorption spectra and photoluminescence (PL) emissions. In particular, mixed halide NCs with controllable band gaps and PL emission across the entire visible region have been demonstrated by tuning the precursor halide ratios. The reproducibility and scalability of the present synthetic protocol is elaborated by upscaling the amounts of chemicals and solvents/ligands in a representative synthesis of CsPbBr 3 NPLs. The representative large-scale CsPbBr 3 NPLs exhibit a high PL quantum yield of 73.56%.
| Type: | Article |
|---|---|
| Title: | One-pot scalable synthesis of all-inorganic perovskite nanocrystals with tunable morphology, composition and photoluminescence |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1039/c7ce01749a |
| Publisher version: | https://doi.org/10.1039/c7ce01749a |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office > Institute for Materials Discovery |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10042426 |
Archive Staff Only
 |
View Item |
