硫酸癸基铵后处理用于高效无空穴导体可印刷型过氧化物太阳能电池,可降低电压损耗

IF 7.5 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Communications Materials Pub Date : 2024-10-09 DOI:10.1038/s43246-024-00643-9
Zexiong Qiu, Jiale Liu, Chuanzhou Han, Chaoyang Wang, Junwei Xiang, Ziwei Zheng, Minhao Xia, Yang Zhou, Anyi Mei, Hongwei Han
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引用次数: 0

摘要

无孔导体可印刷介观包晶太阳能电池(p-MPSCs)因其低成本、可升级性和优异的稳定性而受到广泛关注。然而,由于透辉石的缺陷密度高,而且透辉石与碳电极之间没有界面阻挡层,因此会造成严重的开路电压(VOC)损失,导致功率转换效率(PCE)不具竞争力。本文利用癸基硫酸铵(DA2SO4)的阴阳离子协同作用,通过简便的后处理方法抑制 p-MPSC 的 VOC 损失。DA+ 阳离子将碳电极附近的过氧化物转变为宽带隙二维过氧化物以阻挡电子,而 SO42- 阴离子则与配位不足的铅中心相互作用以降低缺陷密度。因此,改进型器件的 PCE 从 17.78% 提高到 19.59%,VOC 从 0.98 V 提高到 1.06 V。同时,没有任何封装的改良器件具有出色的湿度稳定性,在室温下 75% 相对湿度的空气中老化 528 小时后,PCE 几乎保持了初始值的 99%。开路电压损失是无空穴导体可印刷介观过氧化物太阳能电池面临的一个问题。在这里,通过阴阳离子协同作用,一种简便的癸基硫酸铵后处理方法降低了电压损耗,并将功率转换效率从 17.8% 提高到 19.6%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Decylammonium sulfate post-treatment for efficient hole-conductor-free printable perovskite solar cells with reduced voltage loss
Hole-conductor-free printable mesoscopic perovskite solar cells (p-MPSCs) have attracted widespread attention for their low cost, up-scalability, and exceptional stability. However, the high defect density of perovskite and the absence of interfacial barrier layer between perovskite and carbon electrode cause profound open-circuit voltage (VOC) loss, which results in uncompetitive power conversion efficiency (PCE). Herein, an anion-cation synergy of decylammonium sulfate (DA2SO4) is utilized for suppressing VOC loss of p-MPSCs via a facile post-treatment method. DA+ cations transform the perovskite adjacent to carbon electrode into wide-bandgap 2D perovskite for blocking electrons, while the SO42− anions interact with undercoordinated lead centers for reducing defect density. As a result, the modified device delivers an enhanced PCE from 17.78% to 19.59%, with an improved VOC from 0.98 V to 1.06 V. Meanwhile, the modified device without any encapsulation exhibits excellent moisture stability with the PCE remained almost 99% of the initial value after 528 h aging in 75% RH air at room temperature. Open-circuit voltage loss is an issue faced by hole-conductor-free printable mesoscopic perovskite solar cells. Here, a facile decylammonium sulfate post-treatment reduces the voltage loss via an anion-cation synergy, and increases the power conversion efficiency from 17.8% to 19.6%.
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来源期刊
Communications Materials
Communications Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-
CiteScore
12.10
自引率
1.30%
发文量
85
审稿时长
17 weeks
期刊介绍: Communications Materials, a selective open access journal within Nature Portfolio, is dedicated to publishing top-tier research, reviews, and commentary across all facets of materials science. The journal showcases significant advancements in specialized research areas, encompassing both fundamental and applied studies. Serving as an open access option for materials sciences, Communications Materials applies less stringent criteria for impact and significance compared to Nature-branded journals, including Nature Communications.
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