A high quality and quantity hybrid perovskite quantum dots (CsPbX3, X= Cl, Br and I) powders synthesis via ionic displacement

Yuhang Yin, Weiling Luan, Chengxi Zhang, Fuqian Yang

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations


Recently, all-inorganic perovskites CsPbX3 (X= Cl, Br and I) quantum dots (QDs) have drawn great attentions because of their PL spectra tunable over the whole visible spectral region (400-700 nm) and adjustable bandgap, which revealed a promising potential on the field of photoelectronic devices, such as solar cells, LEDs and sensors. In this paper, CsPbX3 QDs and hybrid QDs, CsPbClxBr3-x and CsPbBrxI3-x were synthesized via one-step and two-step methods comparably. The optical bandgaps of CsPbCl3, CsPbBr3, and CsPbI3, were calculated as 3.08, 2.36, and 1.73eV, respectively, based on the Tauc's equation and UV absorption spectra. Ionic displacement and phase transformation occurred during the mixing process were found based on the monitoring of PL spectra and HRTEM characterization. The long-Term stability, dried, high quality and two-dimensional hybrid CsPbBrxI3-x QDs powders could be achieved via the two-step method. Polar solution inductions were used to wash and purify the CsPbX3 QDs, which help obtain of various compositions and well crystallize all-inorganic perovskites QDs powders.

Original languageEnglish
Article number012057
JournalIOP Conference Series: Earth and Environmental Science
Issue number1
StatePublished - Dec 20 2017
Event1st International Global on Renewable Energy and Development, IGRED 2017 - Singapore, Singapore
Duration: Dec 22 2017Dec 25 2017

Bibliographical note

Publisher Copyright:
© Published under licence by IOP Publishing Ltd.

ASJC Scopus subject areas

  • Environmental Science (all)
  • Earth and Planetary Sciences (all)


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