Room temperature synthesis of CsPbX3 (X = Cl, Br, I) perovskite quantum dots by water-induced surface crystallization of glass

• Published in: Journal of alloys and compounds Vol. 818; p. 152872
• Main Authors: Wang, Yajie, Zhang, Renli, Yue, Yu, Yan, Sasa, Zhang, Liyan, Chen, Danping
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 25.03.2020; Elsevier BV
• Subjects: Crystallization; CsPbX3; Glass; Heat treatment; Nucleation; Perovskites; Quantum dots; Room temperature; Surface crystallization; Water-induced; CsPbX3; Water-induced; Glass; Surface crystallization
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2019.152872

Currently, the mainstream method for preparing perovskite quantum dots in glass is a heat treatment method. Here, a new method for the preparation of CsPbX3 (X = Cl, Br, I) quantum dots (QDs) by water-induced surface crystallization in tin fluorophosphates glass has been developed. A plausible water-induced surface crystallization mechanism has been proposed, revealing that water can reduce the non-uniform nucleation barrier to induce crystallization. Through changing the ratio of Cl/Br/I halogen elements in the raw material, a whole-family of CsPbX3 QDs in tin fluorophosphate glass can be obtained, covering the entire visible band from 414 nm to 713 nm. Besides, the proposed material technology may exert a vital role in the field of anti-counterfeiting technology shortly. A new method for the preparation of CsPbBr3 quantum dots (QDs) by water-induced surface crystallization in tin fluorophosphates glass has been developed, which may exert a vital role in the field of anti-counterfeiting technology. [Display omitted] •A completely new method for the preparation of CsPbX3 (X = Cl, Br, I) quantum dots (QDs) by water-induced surface crystallization in tin fluorophosphate glass has been developed.•A plausible water-induced surface crystallization mechanism has been proposed, revealing that the activation energy decrease in the presence of hydroxyls was attributed to the breaking of [P–O–P] bonds of the glass structure by water.