Dual-Functional Passivation Agent of Natural Dye Congo Red For Enhanced Carbon-Based Perovskite Solar Cells.

IF 8.3 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
ACS Applied Materials & Interfaces Pub Date : 2024-12-18 Epub Date: 2024-12-09 DOI:10.1021/acsami.4c16831
Dan Lu, Jingquan Fan, Xinrui Ma, Mengqi Geng, Jialiang Li, Tingting Xu
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引用次数: 0

Abstract

Carbon-based perovskite solar cells (C-PSCs) have acquired broad interest due to their superior stability and lower cost compared with metal-based perovskite solar cells (M-PSCs). However, the presence of perovskite defects greatly limits the power conversion efficiency (PCE) and long-term stability of C-PSCs. Herein, a natural dye Congo red molecule containing dual-functional groups of amino and sulfonic acids is first used as a surface passivation agent to treat the surface of perovskite films. High-quality perovskite films with reducing surface defect density and inhibiting nonradiative recombination are obtained. It is shown that the Congo red molecules not only effectively interact with the perovskite, enhancing the crystallization and enlarging the crystal size, but also demonstrate positive contribution for light harvesting in the visible range. The maximum PCE of 16.22% is achieved at the optimal concentration of 0.2 mg/mL Congo red, which is much higher than 13.57% for the control device. After 840 h of storage at 30-40% relative humidity at room temperature, the unencapsulated C-PSCs can still maintain a high initial performance of 87.21% compared with 43.26% for the control cells.

增强碳基钙钛矿太阳能电池用天然染料刚果红双功能钝化剂。
与金属基钙钛矿太阳能电池(M-PSCs)相比,碳基钙钛矿太阳能电池(C-PSCs)由于其优越的稳定性和更低的成本而获得了广泛的关注。然而,钙钛矿缺陷的存在极大地限制了c - psc的功率转换效率(PCE)和长期稳定性。本文首先使用含有氨基和磺酸双官能团的天然染料刚果红分子作为表面钝化剂处理钙钛矿膜的表面。获得了具有降低表面缺陷密度和抑制非辐射复合的高质量钙钛矿薄膜。结果表明,刚果红分子不仅与钙钛矿有效相互作用,增强了晶体的结晶性,增大了晶体的尺寸,而且对可见光范围内的光收集也有积极的贡献。当刚果红的最佳浓度为0.2 mg/mL时,PCE为16.22%,远高于对照装置的13.57%。在30-40%相对湿度的室温下储存840 h后,未封装的C-PSCs仍能保持87.21%的高初始性能,而对照电池的初始性能为43.26%。
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来源期刊
ACS Applied Materials & Interfaces
ACS Applied Materials & Interfaces 工程技术-材料科学:综合
CiteScore
16.00
自引率
6.30%
发文量
4978
审稿时长
1.8 months
期刊介绍: ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.
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