Publication detail

Efficient Ligand Passivation Enables Ultrastable CsPbX3 Perovskite Nanocrystals in Fully Alcohol Environments

Gualdron-Reyes, AF. Fernandez-Climent, R. Masi, S. Mesa, CA. Echeverria-Arrondo, C. Aiello, F. Balzano, F. Uccello-Barretta, G. Rodriguez-Pereira, J. Gimenez, S. Mora-Sero, I.

Original Title

Efficient Ligand Passivation Enables Ultrastable CsPbX3 Perovskite Nanocrystals in Fully Alcohol Environments

Type

journal article in Web of Science

Language

English

Original Abstract

Halide perovskite nanocrystals (PNCs) have demonstrated their wide potential to fabricate efficient optoelectronic devices and to prepare promising photocatalysts for solar-driven photo(electro)chemical reactions. However, their use in most of the practical applications is limited due to the instability of PNCs in polar environments. Here, the preparation of non-encapsulated CsPbX3 nanocrystals dispersed in fully alcohol environments, with outstanding stability through surface defect passivation strategy is reported. By using didodecyldimethylammonium bromide (DDAB) during material post-treatment, highly luminescent CsPbBr3 PNCs with remarkable stability in methanol/butanol medium up to 7 months with near-unity photoluminescence quantum yield are achieved. This approach is extrapolated to stabilize iodine-based CsPbBr3-xIx and CsPbI3 PNCs, showing an improvement of their photoluminescence features and stability in these high polar alcohols up to 6 h. DDAB mediates the defect suppression through ligand exchange and avoids the full permeation of alcohol to be in contact with the PNCs. In this context, DDAB induces ionization of alcohol molecules to strengthen the surface passivation. The findings open the door to the development of long-term stable CsPbX3 PNCs with high optical performance to be used in polar environments.

Keywords

halide perovskites; photocatalysis; photoluminescence quantum yield; polar solvents; stability

Authors

Gualdron-Reyes, AF.; Fernandez-Climent, R.; Masi, S.; Mesa, CA.; Echeverria-Arrondo, C.; Aiello, F.; Balzano, F.; Uccello-Barretta, G.; Rodriguez-Pereira, J.; Gimenez, S.; Mora-Sero, I.

Released

1. 6. 2023

Publisher

WILEY-V C H VERLAG GMBH

Location

WEINHEIM

ISBN

2195-1071

Periodical

Advanced Optical Materials

Year of study

11

Number

12

State

Federal Republic of Germany

Pages count

11

URL

https://onlinelibrary.wiley.com/doi/10.1002/adom.202203096

BibTex

@article{BUT183767,
  author="Gualdron-Reyes, AF. and Fernandez-Climent, R. and Masi, S. and Mesa, CA. and Echeverria-Arrondo, C. and Aiello, F. and Balzano, F. and Uccello-Barretta, G. and Rodriguez-Pereira, J. and Gimenez, S. and Mora-Sero, I.",
  title="Efficient Ligand Passivation Enables Ultrastable CsPbX3 Perovskite Nanocrystals in Fully Alcohol Environments",
  journal="Advanced Optical Materials",
  year="2023",
  volume="11",
  number="12",
  pages="11",
  doi="10.1002/adom.202203096",
  issn="2195-1071",
  url="https://onlinelibrary.wiley.com/doi/10.1002/adom.202203096"
}