Luminescent manganese-doped CsPbCl 3 perovskite quantum dots

Chun Che Lin, Kun Yuan Xu, Da Wang, Andries Meijerink

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

Nanocrystalline cesium lead halide perovskites (CsPbX 3, X = Cl, Br, and I) form an exciting new class of semiconductor materials showing quantum confinement. The emission color can be tuned over the full visible spectral region making them promising for lightâ €'emitting applications. Further control over the optical and magnetic properties of quantum dots (QDs) can be achieved through doping of transition metal (TM) ions such as Mn 2+ or Co 2+. Here we demonstrate how, following QD synthesis in the presence of a Mnâ €'precursor, dropwise addition of silicon tetrachloride (SiCl 4) to the QDs in toluene results in the formation of Mnâ €'doped CsPbCl 3 QDs showing bright orange Mn 2+ emission around 600 nm. Evidence for successful doping is provided by excitation spectra of the Mn 2+ emission, with all features of the CsPbCl 3 QD absorption spectrum and a decrease of the 410 nm excitonic emission life time with increasing Mnâ €'concentration, giving evidence for enhanced exciton to Mn 2+ energy transfer. As a doping mechanism we propose a combination of surface etching and reconstruction and diffusion doping. The presently reported approach provides a promising avenue for doping TM ions into perovskites QDs enabling a wider control over optical and magnetic properties for this new class of QDs.

Original languageEnglish
Article number45906
JournalScientific Reports
Volume7
DOIs
Publication statusPublished - Apr 12 2017
Externally publishedYes

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manganese
quantum dots
perovskites
metal ions
transition metals
silicon tetrachloride
magnetic properties
optical properties
cesium
halides
toluene
energy transfer
excitons
etching
absorption spectra
color
life (durability)
synthesis
excitation

ASJC Scopus subject areas

  • General

Cite this

Luminescent manganese-doped CsPbCl 3 perovskite quantum dots. / Lin, Chun Che; Xu, Kun Yuan; Wang, Da; Meijerink, Andries.

In: Scientific Reports, Vol. 7, 45906, 12.04.2017.

Research output: Contribution to journalArticle

Lin, Chun Che ; Xu, Kun Yuan ; Wang, Da ; Meijerink, Andries. / Luminescent manganese-doped CsPbCl 3 perovskite quantum dots. In: Scientific Reports. 2017 ; Vol. 7.
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