Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 152, Issue 17, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.5128233
Keywords
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Funding
- Science Foundation Ireland (SFI) [16/IA/4629]
- Irish Research Council (IRC) [IRCLA/2017/285]
- SFI Research Centre MaREI
- SFI Research Centre AMBER
- SFI Research Centre CONFIRM [12/RC/2278_P2, 12/RC/2302_P2, 16/RC/3918]
- IRC Enterprise Award w/ Intel Ireland [EPSPG/2016/170]
- Irish Research Council (IRC) [EPSPG/2016/170] Funding Source: Irish Research Council (IRC)
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Nanocrystals of the inorganic perovskite, CsPbBr3, display outstanding photo-physical properties, making them ideal for next generation optical devices. However, the typical combination of oleic acid and oleylamine ligands employed in their synthesis is easily displaced, leading to poor stability that can hinder their applicability. In this work, we look toward the replacement of the oleic acid and amine with phosphorous-based ligands. We synthesize CsPbBr3 nanocrystals using an oleylamine/alkylphosphonic acid combination with near perfect monodispersity with the ability to tune the bandgap by varying the alkyl chain length. We further investigate the replacement of the oleylamine giving a ligand combination of alkylphosphonic acid/trioctylphosphine oxide for perovskite nanocrystal nucleation and growth. This combination is typical for the widely studied metal chalcogenide synthesis and in our study with CsPbBr3 yields a pure phase perovskite.
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