Metal to Halide Perovskite (HaP): An Alternative Route to HaP Coating, Directly from Pb(0) or Sn(0) Films

Yevgeny Rakita, Satyajit Gupta, David Cahen, Gary Hodes

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Halide perovskite film-based devices (e.g., solar cells and LEDs) have shown unique device performance. These films are commonly prepared from toxic solutions of metal salts (e.g., Pb2+ in DMF or DMSO). We describe a method to form halide perovskite films by simply reacting metal (Pb or Sn) films with alcoholic solutions of monovalent alkali metal or alkyl ammonium halides, which avoids the use of toxic Pb2+ solutions in the manufacturing step. We show how the morphology of the films can be controlled by variation in reaction parameters and also how mixed halide perovskite films can be prepared. A mechanism for the metal-to-perovskite conversion is suggested. We further show how electrochemically assisted conversion can allow control over the oxidation state of the metal and increase the reaction rate greatly.

Original languageEnglish
Pages (from-to)8620-8629
Number of pages10
JournalChemistry of Materials
Volume29
Issue number20
DOIs
StatePublished - 24 Oct 2017
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2017 American Chemical Society.

Funding

Y.R. thanks Igal Levine, Dr. Nir Kedem, and Dr. Francesco Tassinari for their help with metal evaporation, electrochemical measurement, and for fruitful discussions. G.H. acknowledges a research grant from Dana and Yossie Hollander, in the framework of the WIS Alternative sustainable Energy Initiative, AERI.

FundersFunder number
Archival Education and Research Institute

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