# Inverted Perovskite Photovoltaics using Flame Spray Pyrolysis Solution based CuAlO2/Cu-O Hole Selective Contact

## TL;DR

This paper introduces a novel inverted perovskite solar cell using flame spray pyrolysis-derived CuAlO2/Cu-O hole transport layers, demonstrating improved efficiency and reduced hysteresis.

## Contribution

It presents a new functionalization process for copper-based hole transport layers using flame spray pyrolysis and solution treatment, enhancing solar cell performance.

## Key findings

- Improved power conversion efficiency in inverted perovskite cells.
- Negligible hysteresis effect observed with the new HTL.
- Effective use of flame spray pyrolysis for copper oxide materials.

## Abstract

We present the functionalization process of a conductive and transparent copper aluminum oxide, copper oxide alloy. The copper aluminum oxide, copper oxide powders were developed by flame spray pyrolysis and their stabilized dispersions were treated by sonication and centrifugation methods. We show that when the supernatant part of the treated copper aluminum oxide, copper oxide dispersions is used for the development of hole transporting layers the corresponding inverted perovskite solar cells show improved functionality and power conversion efficiency with negligible hysteresis effect.

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Source: https://tomesphere.com/paper/1906.01989