Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Moisture-Assisted near-UV Emission Enhancement of Lead-Free Cs4CuIn2Cl12 Double Perovskite Nanocrystals

Liu, Maning LU orcid ; Matta, Sri Kasi ; Ali-Löytty, Harri ; Matuhina, Anastasia ; Grandhi, G. Krishnamurthy ; Lahtonen, Kimmo ; Russo, Salvy P. and Vivo, Paola (2022) In Nano Letters 22(1). p.311-318
Abstract

Lead-based halide perovskite nanocrystals (NCs) are recognized as emerging emissive materials with superior photoluminescence (PL) properties. However, the toxicity of lead and the swift chemical decomposition under atmospheric moisture severely hinder their commercialization process. Herein, we report the first colloidal synthesis of lead-free Cs4CuIn2Cl12 layered double perovskite NCs via a facile moisture-assisted hot-injection method stemming from relatively nontoxic precursors. Although moisture is typically detrimental to NC synthesis, we demonstrate that the presence of water molecules in Cs4CuIn2Cl12 synthesis enhances the PL quantum yield (mainly in the near-UV... (More)

Lead-based halide perovskite nanocrystals (NCs) are recognized as emerging emissive materials with superior photoluminescence (PL) properties. However, the toxicity of lead and the swift chemical decomposition under atmospheric moisture severely hinder their commercialization process. Herein, we report the first colloidal synthesis of lead-free Cs4CuIn2Cl12 layered double perovskite NCs via a facile moisture-assisted hot-injection method stemming from relatively nontoxic precursors. Although moisture is typically detrimental to NC synthesis, we demonstrate that the presence of water molecules in Cs4CuIn2Cl12 synthesis enhances the PL quantum yield (mainly in the near-UV range), induces a morphological transformation from 3D nanocubes to 2D nanoplatelets, and converts the dark transitions to radiative transitions for the observed self-trapped exciton relaxation. This work paves the way for further studies on the moisture-assisted synthesis of novel lead-free halide perovskite NCs for a wide range of applications.

(Less)
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; and
publishing date
type
Contribution to journal
publication status
published
subject
keywords
2D nanoplatelets, lead-free double perovskite nanocrystals, moisture-assisted, near-UV emission, self-trapped excitons
in
Nano Letters
volume
22
issue
1
pages
8 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • pmid:34939808
  • scopus:85122593035
ISSN
1530-6984
DOI
10.1021/acs.nanolett.1c03822
language
English
LU publication?
no
id
7cdbdd9a-6e55-434f-a2fa-49d5e56c3db8
date added to LUP
2023-08-24 12:19:40
date last changed
2024-10-05 18:35:29
@article{7cdbdd9a-6e55-434f-a2fa-49d5e56c3db8,
  abstract     = {{<p>Lead-based halide perovskite nanocrystals (NCs) are recognized as emerging emissive materials with superior photoluminescence (PL) properties. However, the toxicity of lead and the swift chemical decomposition under atmospheric moisture severely hinder their commercialization process. Herein, we report the first colloidal synthesis of lead-free Cs<sub>4</sub>CuIn<sub>2</sub>Cl<sub>12</sub> layered double perovskite NCs via a facile moisture-assisted hot-injection method stemming from relatively nontoxic precursors. Although moisture is typically detrimental to NC synthesis, we demonstrate that the presence of water molecules in Cs<sub>4</sub>CuIn<sub>2</sub>Cl<sub>12</sub> synthesis enhances the PL quantum yield (mainly in the near-UV range), induces a morphological transformation from 3D nanocubes to 2D nanoplatelets, and converts the dark transitions to radiative transitions for the observed self-trapped exciton relaxation. This work paves the way for further studies on the moisture-assisted synthesis of novel lead-free halide perovskite NCs for a wide range of applications.</p>}},
  author       = {{Liu, Maning and Matta, Sri Kasi and Ali-Löytty, Harri and Matuhina, Anastasia and Grandhi, G. Krishnamurthy and Lahtonen, Kimmo and Russo, Salvy P. and Vivo, Paola}},
  issn         = {{1530-6984}},
  keywords     = {{2D nanoplatelets; lead-free double perovskite nanocrystals; moisture-assisted; near-UV emission; self-trapped excitons}},
  language     = {{eng}},
  month        = {{01}},
  number       = {{1}},
  pages        = {{311--318}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Nano Letters}},
  title        = {{Moisture-Assisted near-UV Emission Enhancement of Lead-Free Cs<sub>4</sub>CuIn<sub>2</sub>Cl<sub>12</sub> Double Perovskite Nanocrystals}},
  url          = {{http://dx.doi.org/10.1021/acs.nanolett.1c03822}},
  doi          = {{10.1021/acs.nanolett.1c03822}},
  volume       = {{22}},
  year         = {{2022}},
}