The synthesis and characterisation of the highly stable perovskite nano crystals and their application to ink-jet printed colour conversion layers
- Authors
- Choi, Sol; Lee, Sang Yoon; Kim, Do Yeob; Park, Hyung-Ki; Ko, Min Jae; Cho, Kwan Hyun; Choi, Jun
- Issue Date
- May-2020
- Publisher
- ELSEVIER SCIENCE INC
- Keywords
- Perovskite; Light-emitting diode; Stability; Colour gamut; Ink-jet printing; Display
- Citation
- JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v.85, pp.226 - 239
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
- Volume
- 85
- Start Page
- 226
- End Page
- 239
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/145791
- DOI
- 10.1016/j.jiec.2020.02.005
- ISSN
- 1226-086X
- Abstract
- We synthesised cesium lead bromide and formamidinium lead bromide perovskite colloidal nanocrystals by ligand-assisted reprecipitation method for the wide-colour gamut low-cost displays. The prepared perovskite colloidal nanocrystal solutions were formulated into the ink-jet printable homogeneous inks and uniformly coated as the colour conversion layers of the quantum dot organic light-emitting diode displays. The silica capped CsPbBr3 nanocrystals were very stable in high temperature observation while the FAPbBr(3) showed the excellent long-term stability at room temperature even without the silica passivation. The ink-jet printed colour conversion films had very narrow full-width-at-half-maximums of around 20 nm and high photoluminescence quantum yields of 73.0% and 76.9%, respectively. Particularly, the FAPbBr(3) thin film had an excellent cut-off ratio of blue emission and exhibited external quantum efficiency of 5.39% when fabricated as the hybrid display devices.
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