The Synthesis, Structure and Electronic Properties of a Lead-Free Hybrid Inorganic-Organic Double Perovskite (MA)2KBiCl6 (MA = methylammonium)

TL;DR

This paper reports the synthesis and analysis of a lead-free hybrid double perovskite, (MA)2KBiCl6, demonstrating its structural and electronic properties as a potential photovoltaic material alternative.

Contribution

It introduces a new lead-free double perovskite with detailed structural, spectroscopic, and computational characterization, expanding options for photovoltaic applications.

Findings

(MA)2KBiCl6 is structurally similar to lead-based perovskites.

Spectroscopic and nanoindentation studies reveal promising electronic properties.

Density functional calculations support potential use in photovoltaics.

Abstract

In a search for Lead-free materials that could be used as alternatives to the hybrid perovskites,(MA)PbX3, in photovoltaic applications, we have discovered a hybrid double perovskite, (MA)2KBiCl6, which shows striking similarities to the lead analogues. Spectroscopic measurements and nanoindentation studies are combined with density functional calculations to reveal the properties of this interesting system.