Metal halide perovskite nanorods with tailored dimensions, compositions and stabilities

Shuang Liang, Mingyue Zhang, Sheng He, Mengkun Tian, Woosung Choi, Tianquan Lian, Zhiqun Lin

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

The colloidal synthesis of one-dimensional metal halide perovskite nanocrystals with precisely controlled diameter (D) and length (L) values is challenging due to the intrinsic structural symmetry and ionic crystal nature of the perovskites. This hinders investigation into their size- and shape-dependent properties and prevents their application. Here we report a general platform of cylindrical unimolecular nanoreactors to synthesize a library of one-dimensional perovskite nanorods (NRs) with tailored dimensions (D ≈ 7–16 nm; L ≈ 40–220 nm), compositions (all-inorganic perovskites; organic–inorganic perovskites; lead-free double perovskites) and enhanced colloidal, photo, polar-solvent and thermal stabilities. The dependence of the charge-carrier dynamics, photoluminescence quantum yield and optical anisotropy of the perovskite NRs on the diameter and length was examined. Decreasing the diameter yields opposite trends in the photoluminescence quantum yields and charge-carrier dynamics to that of increasing the length. In addition, enhanced structural anisotropy (that is, a higher aspect ratio of L/D) always increases the optical anisotropy of the perovskite NRs. By leveraging the cylindrical unimolecules as nanoreactors, a rich variety of uniform perovskite NRs with controllable dimensions, compositions and enhanced stabilities can be designed for use as building blocks for a variety of applications, such as in optoelectronic devices, catalysis and sensors. [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)719-728
Number of pages10
JournalNature Synthesis
Volume2
Issue number8
DOIs
StatePublished - Aug 2023

Bibliographical note

Publisher Copyright:
© 2023, The Author(s), under exclusive licence to Springer Nature Limited.

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