Opto-thermal transport engineering in hybrid organic-inorganic lead halide perovskites metasurfaces

TL;DR

This paper explores how nanophotonic surface engineering of hybrid perovskite films can enhance opto-thermal properties, using spectroscopic techniques to analyze temperature effects and stability improvements in optoelectronic devices.

Contribution

It introduces a non-invasive spectroscopic method to study opto-thermal interactions in surface-patterned perovskite films, revealing insights into temperature management and device stability.

Findings

Patterned films exhibit higher local temperature rise due to increased absorption.

Surface engineering influences the opto-thermal transport properties.

Enhanced stability and device performance are achievable through nanostructuring.

Abstract

Halide perovskites have recently gained widespread attention for their exceptional optoelectronic properties which have been illuminated by extensive spectroscopic investigations. In this article, nanophotonic surface-engineering using soft-lithography has been used to reproduce nanostructures with enhanced functionalities. A non-invasive optical technique based on Raman and photolumines-cence (PL) spectroscopy is employed to investigate the interactive effect of the thermal and optical behaviour in surface-patterned hybrid organic-inorganic halide perovskite thin films. The thermophys-ical properties of the engineered perovskite films are extracted from the softening of the representa-tive peak positions in the Raman and PL spectra of the samples which act as temperature markers. The investigation suggests a comparatively higher rise in the local temperature for the patterned thin films resulting from their enhanced absorption. Therefore, a cross-talk between the opto-thermal transport phenomena in imprinted perovskite thin films pertaining to both enhancing device properties along with maintaining device stability is established.