Enhancing efficiency and stability of ambient-processed blade-coated PSCs with tween 60 and tBBAI surface passivation

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-03-27 DOI:10.1016/j.colsurfa.2025.136748

En Jui Hsu , Rui Yun Hsu , Sheng Hsiung Yang , Yu Pin Lin

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Abstract

Perovskite solar cells (PSCs) have achieved rapid efficiency improvements, but uniformity issues in spin-coated films hinder industrial scalability. This study employs γ-butyrolactone (GBL) as an eco-friendly solvent for blade coating under ambient conditions and investigates the combined effects of polyethylene glycol sorbitan monostearate (Tween 60) and 4-tert-butylbenzylammonium iodide (tBBAI) on PSC performance and stability. Tween 60 improves film wettability, promoting uniform nucleation and grain growth, which enhances crystallinity and reduces grain boundary defects, increasing power conversion efficiency (PCE) from 14.24 % to 16.42 %. Surface passivation with tBBAI mitigates non-radiative recombination by filling iodide and cation vacancies, further raising PCE to 18.39 %. Stability tests show that PSCs treated with Tween 60 and tBBAI retain 85 % of their initial efficiency after 1480 hours of unencapsulated aging, while untreated devices degrade to 68 %. These results highlight an effective strategy for improving perovskite film quality, device efficiency, and operational stability.

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过氧化物太阳能电池（PSC）的效率提高很快，但旋涂薄膜的均匀性问题阻碍了工业化推广。本研究采用γ-丁内酯（GBL）作为环保溶剂，在环境条件下进行叶片涂层，并研究了聚乙二醇山梨醇单硬脂酸酯（吐温 60）和 4-叔丁基苄基铵碘化物（tBBAI）对 PSC 性能和稳定性的综合影响。吐温 60 可改善薄膜润湿性，促进均匀成核和晶粒生长，从而提高结晶度并减少晶界缺陷，将功率转换效率 (PCE) 从 14.24% 提高到 16.42%。使用 tBBAI 进行表面钝化可通过填补碘化物和阳离子空位缓解非辐射重组，从而将 PCE 进一步提高到 18.39%。稳定性测试表明，经过吐温 60 和 tBBAI 处理的 PSC 在未封装老化 1480 小时后，其初始效率仍能保持 85%，而未经处理的器件则降解到 68%。这些结果凸显了一种提高包晶薄膜质量、器件效率和运行稳定性的有效策略。

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来源期刊

Colloids and Surfaces A: Physicochemical and Engineering Aspects 化学-物理化学

CiteScore

8.70

自引率

9.60%

发文量

2421

审稿时长

56 days

期刊介绍： Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.