超分子主客体络合为高效环保的钙钛矿太阳能电池创造了一个“铅笼”

IF 16.8 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy Pub Date : 2025-02-01 DOI:10.1016/j.nanoen.2024.110547

Qixin Zhuang , Ke Wang , Haiyun Li , Zhenyu Liu , Yanyan Li , Yingguo Yang , Qianqian Lin , Cheng Gong , Cong Zhang , Zhihao Guo , Saif M.H. Qaid , Iván Mora-Seró , Zhiyuan Xu , Zhigang Zang , Huaxin Wang

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引用次数: 0

摘要

钙钛矿太阳能电池的铅毒性和泄漏是商业化的主要障碍。在此，我们在钙钛矿前驱体溶液中引入了一种重氮多氧大环结构的密码体222 (C222)，以获得高质量的薄膜。C222中丰富的重氮多氧大环能与Pb2+有效配位，与钙钛矿中的FA+形成氢键，从而降低缺陷密度，抑制非辐射复合，减轻铅泄漏。结果表明，基于c222的PSCs的功率转换效率（PCE）达到了25.34% (0.1 cm2)，在更大的面积（1.0 cm2）下达到23.78%，在模拟am1.5照明下连续最大功率点跟踪（MPPT） 1500小时后，PCE仍保持在初始PCE的90%以上。C222吸附平衡容量（qe）为23.58 mg/g，吸附速率常数（k2）为0.035 g (mg/min)，表明其对锚定位点具有较低的吸附势垒，可有效防止铅泄漏。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Supramolecular host-guest complexation creates a “lead cage” for efficient and eco-friendly perovskite solar cells

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Supramolecular host-guest complexation creates a “lead cage” for efficient and eco-friendly perovskite solar cells

Perovskite solar cells' lead toxicity and leakage are key obstacles to commercialization. Here, we introduce a diazapolyoxamacrobicycle structure of cryptand 222 (C222) into the perovskite precursor solution to obtain high-quality films. The abundant diazapolyoxamacrobicycles in C222 can effectively coordinate with Pb^2 + and form hydrogen bonds with FA⁺ in perovskite, thereby reducing the defect density, suppressing non-radiative recombination, and mitigating lead leakage. As a result, C222-based PSCs achieve a remarkable power conversion efficiency (PCE) of 25.34 % (0.1 cm²) and 23.78 % at a larger area (1.0 cm²), retain over 90 % of its initial PCE after 1500 h of continuous maximum power point tracking (MPPT) under simulated AM 1.5 illumination. Furthermore, the adsorption equilibrium capacity (qe) of C222 is 23.58 mg/g, with an adsorption rate constant (k₂) of 0.035 g (mg/min), indicating a lower adsorption potential barrier for anchoring sites, causing an effectively prevention of lead leakage.

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来源期刊

Nano Energy CHEMISTRY, PHYSICAL-NANOSCIENCE & NANOTECHNOLOGY

CiteScore

30.30

自引率

7.40%

发文量

1207

审稿时长

23 days

期刊介绍： Nano Energy is a multidisciplinary, rapid-publication forum of original peer-reviewed contributions on the science and engineering of nanomaterials and nanodevices used in all forms of energy harvesting, conversion, storage, utilization and policy. Through its mixture of articles, reviews, communications, research news, and information on key developments, Nano Energy provides a comprehensive coverage of this exciting and dynamic field which joins nanoscience and nanotechnology with energy science. The journal is relevant to all those who are interested in nanomaterials solutions to the energy problem. Nano Energy publishes original experimental and theoretical research on all aspects of energy-related research which utilizes nanomaterials and nanotechnology. Manuscripts of four types are considered: review articles which inform readers of the latest research and advances in energy science; rapid communications which feature exciting research breakthroughs in the field; full-length articles which report comprehensive research developments; and news and opinions which comment on topical issues or express views on the developments in related fields.