Achieving low-n value phases and unobstructed carrier transport toward high-performance quasi-2D perovskite solar cells and modules

IF 35.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Joule Pub Date : 2025-09-17 DOI:10.1016/j.joule.2025.102079

Sihui Peng , Jin Liu , Chao Liang , Ge Chen , Yapeng Shi , Zhipeng Miao , Wenlong Liang , Ting Zhang , Yunhang Xie , Yiqiang Zhang , Yanlin Song , Pengwei Li

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引用次数: 0

Abstract

Low-n value quasi-2D perovskites offer superior stability but suffer from inefficient charge transport. Here, we introduce a tyrosine (Tyr)-mediated phase regulation strategy to overcome this trade-off. By leveraging Tyr’s multifunctional active sites, we demonstrate its dual coordination with guanidinium (GA) cations and [PbI₄]²⁻ octahedra through hydrogen bonding and cation-π interactions, which selectively stabilizes low-n phases (n ≤ 3) and optimizes favorable crystallization. This interaction not only increases low-n phase content by 7-fold (from 5.67% to 36.72%) but also enhances interlayer charge coupling, yielding films with an improved carrier diffusion length exceeding 1 μm. Consequently, devices achieve 22.14% record efficiency with minimal hysteresis. Unencapsulated devices retain 96% efficiency after 2,000 h (45% ± 5% relative humidity [RH]) and 88% after 500 h (85°C). Remarkably, a 72.47 cm² module attains a certified 20.28% efficiency, demonstrating excellent scalability. This work provides a paradigm for harmonizing efficiency and stability in low-dimensional photovoltaics, advancing their commercial viability.

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实现低n值相和无阻碍载流子传输到高性能准二维钙钛矿太阳能电池和组件

低n值准二维钙钛矿具有优越的稳定性，但电荷输运效率低。在这里，我们引入酪氨酸（Tyr）介导的相位调节策略来克服这种权衡。通过利用Tyr的多功能活性位点，我们通过氢键和阳离子-π相互作用证明了它与胍（GA）阳离子和[PbI4]2 -八面体的双重配位，选择性地稳定了低n相（n≤3）并优化了有利的结晶。这种相互作用不仅使低n相含量增加了7倍（从5.67%增加到36.72%），而且增强了层间电荷耦合，制备出载流子扩散长度超过1 μm的薄膜。因此，器件以最小的迟滞达到22.14%的记录效率。未封装器件在相对湿度[RH]为45%±5%的条件下，保温时间为2000 h，效率为96%，保温时间为500 h，效率为88%。值得注意的是，72.47 cm2的模块达到了20.28%的认证效率，展示了出色的可扩展性。这项工作为协调低维光伏发电的效率和稳定性提供了一个范例，提高了它们的商业可行性。

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来源期刊

Joule Energy-General Energy

CiteScore

53.10

自引率

2.00%

发文量

198

期刊介绍： Joule is a sister journal to Cell that focuses on research, analysis, and ideas related to sustainable energy. It aims to address the global challenge of the need for more sustainable energy solutions. Joule is a forward-looking journal that bridges disciplines and scales of energy research. It connects researchers and analysts working on scientific, technical, economic, policy, and social challenges related to sustainable energy. The journal covers a wide range of energy research, from fundamental laboratory studies on energy conversion and storage to global-level analysis. Joule aims to highlight and amplify the implications, challenges, and opportunities of novel energy research for different groups in the field.