Chalcohalide Antiperovskite Thin Films with Visible Light Absorption and High Charge-Carrier Mobility Processed by Solvent-Free and Low-Temperature Methods

Silver chalcohalide antiperovskites represent a rather unexplored alternative to lead halide perovskites and other semiconductors based on toxic heavy metals. All synthetic approaches reported so far for Ag3SI and Ag3SBr require long synthesis times (typically days, weeks, or even months) and high t...

Full description

Saved in:

Bibliographic Details
Published in:	Chemistry of materials Vol. 35; no. 16; pp. 6482 - 6490
Main Authors:	Sebastiá-Luna, Paz, Rodkey, Nathan, Mirza, Adeem Saeed, Mertens, Sigurd, Lal, Snigdha, Gaona Carranza, Axel Melchor, Calbo, Joaquín, Righetto, Marcello, Sessolo, Michele, Herz, Laura M., Vandewal, Koen, Ortí, Enrique, Morales-Masis, Mónica, Bolink, Henk J., Palazon, Francisco
Format:	Journal Article
Language:	English
Published:	American Chemical Society 22-08-2023
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	Silver chalcohalide antiperovskites represent a rather unexplored alternative to lead halide perovskites and other semiconductors based on toxic heavy metals. All synthetic approaches reported so far for Ag3SI and Ag3SBr require long synthesis times (typically days, weeks, or even months) and high temperatures. Herein, we report the synthesis of these materials using a fast and low-temperature method involving mechanochemistry. Structural and optical properties are examined experimentally and supported by first-principles calculations. Furthermore, we deposit Ag3SI as thin films by pulsed laser deposition and characterize its optoelectronic properties using optical-pump-terahertz-probe measurements, revealing a high charge-carrier mobility of 49 cm2 V–1 s–1. This work paves the way to the implementation of chalcohalide antiperovskites in various optoelectronic applications.
ISSN:	0897-4756 1520-5002
DOI:	10.1021/acs.chemmater.3c01349