Influence of periodic flow field on synthesis of perovskite nanocrystals: Synthetic pathway and productivity

Ye Chan Jee, Woo Sik Kim, Sang Hyuk Im

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Here it was demonstrated that series–parallel reaction pathway for CsPbBr3 and Cs4PbBr6 perovskite nanocrystals (PNCs) were selective by the periodic flow fields as well as precursor ratio. The periodic Taylor vortex flows (PTVFs) in a Couette-Taylor batch reactor (BR) were applied for controlling the synthetic pathway of PNCs and the random turbulent eddy flow (RTEF) in a stirred tank BR was also used for comparison. The PTVFs in the Couette-Taylor BR promoted not only the formation reaction of CsBr from the reaction between Cs-oleate (Cs-OA) and PbBr2 but also the reaction between CsBr and the remained PbBr2. As a result, the CsPbBr3 and Cs4PbBr6 PNCs could be selectively formed according to the ratio of Cs-OA:PbBr2 under the PTVFs in the Couette-Taylor BR, whereas they couldn't under the RTEF in the stirred tank BR. In addition, the production yield of CsPbBr3 and Cs4PbBr6 PNCs in Couette-Taylor BR increased up to 30 % and 57 %, respectively, compared to their yield in the stirred tank BR due to the effective micro-mixing and shear dispersion of PNCs.

Original languageEnglish
Article number140519
JournalChemical Engineering Journal
Publication statusPublished - 2023 Feb 15

Bibliographical note

Funding Information:
This study was supported by the National Research Foundation of Korea (NRF) under the Ministry of Science, ICT & Future Planning (no. 2021R1A5A6002853 , no. 2022R1A2C3004964 , no. 2022M3H4A1A03074093 )

Publisher Copyright:
© 2022 Elsevier B.V.


  • Couette-Taylor
  • Hot-injection
  • Periodic flow fields
  • Perovskite nanocrystals
  • Taylor vortex

ASJC Scopus subject areas

  • General Chemistry
  • Environmental Chemistry
  • General Chemical Engineering
  • Industrial and Manufacturing Engineering


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