通过偶极子分子调节两步法反向包晶光伏技术中的残余 PbI2 团簇

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2024-11-26 DOI:10.1021/acs.nanolett.4c05022

Chenyun Wang, Duo Qu, Ruilin Han, Xinyue Zhang, Chuanzhen Shang, Bin Zhou, Shasha Wang, Hanwei Hu, Wenying Zhao, Qichao Qin, Yajie Zhang, Qiang Guo, Yongguang Tu

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引用次数: 0

摘要

在制造过氧化物太阳能电池领域，尤其是采用两步法时，精确调节 PbI2 的存在至关重要。这种方法固有的独特结晶轨迹往往会在埋藏界面留下未反应的 PbI2，从而产生大量缺陷态。为了应对这一挑战，我们引入了偶极分子--3-（癸基二甲基氨基）丙烷磺酸内盐（3DPSI）的策略性预沉积。这一干预措施可调节残余的 PbI2 簇，并抑制相关衍生缺陷（如 Pb0、VI 和 VFA）的出现。通过实验精确性与理论严谨性相结合的协同方法，我们获得了关于提高晶体质量和有效抑制缺陷的深刻见解。偶极分子的预沉积使两步法倒置透辉石光电转换效率达到 24.62%，并显著提高了连续光照下的稳定性。

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Dipole Molecule-Mediated Modulating Residual PbI2 Clusters in Two-Step-Processing Inverted Perovskite Photovoltaics

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Dipole Molecule-Mediated Modulating Residual PbI2 Clusters in Two-Step-Processing Inverted Perovskite Photovoltaics

The precise modulation of PbI₂ presence is of paramount importance in the domain of perovskite solar cell fabrication, particularly when employing the two-step method. The distinct crystallization trajectory inherent to this method often leaves unreacted PbI₂ at the buried interface, which can create a large number of defect states. To address this challenge, we have introduced a strategic predeposition of the dipole molecule, 3-(decyldimethylammonio)propane sulfonate inner salt (3DPSI). This intervention serves to regulate residual PbI₂ clusters and quash the emergence of associated derivative defects, such as Pb⁰, V_I, and V_FA. Through a synergistic approach combining experimental precision with theoretical rigor, we gained profound insights into the enhancement of crystal quality and the effective suppression of defects. The predeposition of the dipole molecule has yielded a remarkable power conversion efficiency of 24.62% in two-step-processing inverted perovskite photovoltaics and significantly improved the stability under continuous illumination.

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.