Self-Assembled PbSe Nanowire:Perovskite Hybrids

Zhenyu Yang, Emre Yassitepe, Oleksandr Voznyy, Alyf Janmohamed, Xinzheng Lan, Larissa Levina, Riccardo Comin, Edward H. Sargent

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

© 2015 American Chemical Society. Inorganic semiconductor nanowires are of interest in nano- and microscale photonic and electronic applications. Here we report the formation of PbSe nanowires based on directional quantum dot alignment and fusion regulated by hybrid organic-inorganic perovskite surface ligands. All material synthesis is carried out at mild temperatures. Passivation of PbSe quantum dots was achieved via a new perovskite ligand exchange. Subsequent in situ ammonium/amine substitution by butylamine enables quantum dots to be capped by butylammonium lead iodide, and this further drives the formation of a PbSe nanowire superlattice in a two-dimensional (2D) perovskite matrix. The average spacing between two adjacent nanowires agrees well with the thickness of single atomic layer of 2D perovskite, consistent with the formation of a new self-assembled semiconductor nanowire:perovskite heterocrystal hybrid.
Original languageEnglish (US)
Pages (from-to)14869-14872
Number of pages4
JournalJournal of the American Chemical Society
Volume137
Issue number47
DOIs
StatePublished - Nov 19 2015
Externally publishedYes

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