Photo-physical properties of lead-tin binary Perovskite thin films

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Date

2021

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Volume Title

Publisher

University of Western Cape

Abstract

Organic-inorganic lead-based perovskite has exhibited great performance in the past few years. However, the lead (Pb) embedded in those compounds is a significant drawback to further progress, due to its environmental toxicity. As an alternative, tin (Sn) based-perovskites have demonstrated promising results in terms of electrical and optical properties for photovoltaic devices, but the oxidation of tin ion- from stannous ion (Sn2+) to stannic ion (Sn4+) presents a problem in terms of performance and stability when exposed to ambient conditions. A more feasible approach may be in a Pb-Sn binary metal perovskite in pursuit of efficient, stable perovskite solar cells (PSCs) with reduced Pb-content, as compared to pure Pb- or Sn-based PSCs. Here, we report on the deposition of a Pb-Sn binary perovskite by sequential chemical vapor deposition.

Description

>Magister Scientiae - MSc

Keywords

Organic-inorganic perovskite, Binary metal alloy, Chemical vapour deposition (CVD), X-ray diffraction (XRD), UV-VIS spectroscopy

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