Unlocking the Efficiency Potential of Perovskite Solar Cells: from Single-junction to Tandem
Yi Hou a
a National University of Singapore, Blk EA, #03-09 9 Engineering Drive 1, Singapore
Materials for Sustainable Development Conference (MATSUS)
Proceedings of MATSUS Spring 2024 Conference (MATSUS24)
#PerTanCell - Perovskite Tandem Solar Cells
Barcelona, Spain, 2024 March 4th - 8th
Organizers: Kai Brinkmann and Felix Lang
Invited Speaker, Yi Hou, presentation 043
DOI: https://doi.org/10.29363/nanoge.matsus.2024.043
Publication date: 18th December 2023

The escalating demand for solar energy highlights the critical need for advancing more efficient next-generation photovoltaic (PV) technologies. Currently, perovskite-based single junction and tandem solar cells are reaching or even exceeding the performance of established technologies like three-five tandem and GaAs solar cells. In the case of perovskite versus GaAs, employing nanophotonics to fine-tune the PV bandgap emerges as a viable strategy, especially when reaching the limits of composition engineering of FAPbI3. Tandem solar cells present another practical approach to surpass the single-junction Shockley-Queisser limit. Our initial efforts concentrated on solution-coating thick perovskite layers onto small, textured silicon substrates, successfully proving the concept's viability. In Singapore, we are actively working to shift this technology from laboratory research to manufacturing, focusing on applying perovskite layers to industrial Czochralski (CZ) silicon wafers. With cooperative efforts, our goal is to propel this technology from lab-scale to full-scale fabrication, aiming to surpass the performance of three-five PVs in full module size, thereby addressing the growing global energy demands with more efficient solar solutions.

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