In the relentless pursuit of sustainable energy solutions to power our ever-expanding array of smart devices, indoor photovoltaics (IPVs) have emerged as indispensable assets. Among the plethora of materials vying for attention, Cs2AgBiBr6, the double perovskite (DP), shines brightly for its exceptional characteristics: ease of processing, minimal toxicity, and remarkable stability, all tailored to meet the rigorous demands of IPV applications. In this poster, we present a hole transport material (HTM)-free Cs2AgBiBr6-based solar cells, wherein the surface of the DP is subjected to a n-butylammonium post-treatment, fostering a 2D/3D mixed interface. Concurrently, the conventional metal electrode and HTM components are replaced by a carbon black back electrode (CBE) derived from upcycled biowaste. This transformative modification of the 2D/3D interface not only mitigates charge recombination but also enhances band alignment at the perovskite/CBE interface. Furthermore, density functional theory (DFT) calculations elucidate that increasing the thickness of the 2D modification augments the likelihood of hole localization near the perovskite/CBE interface, thereby facilitating their efficient extraction. Consequently, we obtain HTM-free solar cells with elevated power conversion efficiency, underscoring the efficacy of our low-cost, end-of-waste fabrication strategy.
| Published in | Abstract Book of the 2024 International PhD School on Perovskite PV |
| Page(s) | 19-20 |
| Creative Commons |
This is an Open Access abstract, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2024. Published by Science Publishing Group |
Silver-bismuth Double Perovskites, HTM-free Perovskite Solar Cells, Lead-free Perovskite Solar Cells, Carbon-based Perovskite Solar Cells, Interfacial Engineering
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