Presentation Details
| Perovskite Multijunction Solar Cells Anita Ho-Bailie. The University of Sydney |
Abstract
Crystalline silicon solar cells dominate the photovoltaic market. The technology is mature, reliable, and low costs, driving global widespread adoption in the past decade. However, its power conversion efficiency is limited to <30% because of sub-bandgap losses when encountering low-energy photons and thermalization losses when excess photon energy is lost as heat.
Multi-junction tandem cells overcome these losses by stacking layers with different bandgaps, each optimized for a portion of the solar spectrum. Efficiency limits rise with the number of junctions, e.g., ~45% for two and ~51% for three junctions. These designs have long been used in III�V solar cells for space applications, where performance outweighs cost consideration.
Recently, organic�inorganic metal halide perovskites have emerged as promising, low-cost candidates for next-generation tandems, thanks to their rapid efficiency gains. At the University of Sydney, we explore perovskite tandem technologies, contributing to recent advances in efficiency and stability, and applications for terrestrial and space environments.
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No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author.