Unveiling the Role of Cl Incorporation Enables Scalable MA-Free Triple-Halide Wide-Bandgap Perovskites for Slot-Die-Coated Photovoltaic Modules

IF 6 3区 工程技术 Q2 ENERGY & FUELS
Solar RRL Pub Date : 2025-01-10 DOI:10.1002/solr.202400750
Severin Siegrist, Pedro Quintana Ceres, Victor Marrugat Arnal, Radha Krishnan Kothandaraman, Johnpaul Kurisinkal Pious, Huagui Lai, Vitor Vlnieska, Ayodhya N. Tiwari, Fan Fu
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Abstract

Photostable and efficient 1.8 eV wide-bandgap (WBG) perovskites are needed for all-perovskite tandem photovoltaic (PV) applications, but the high bromine (Br) content can cause halide segregation. To achieve the same bandgap with a lower Br content, MAPbCl3 can be added to form triple-halide perovskites. However, most triple-halide WBG perovskites are still fabricated by antisolvent spin coating with perovskite inks that cannot be transferred to scalable deposition methods. Furthermore, the role of the Cl additives on the bandgap and the photostability remains elusive. Here, Cl-additives, such as ACl, PbCl2, and APbCl3 (where A denotes MA, FA, Cs, Rb), are systematically investigated to form 1.8 eV triple-halide perovskites with 30 mol% Br by N2-assisted blade coating. It is found that PbCl2 and APbCl3 can increase the bandgap by several tens of meV, while ACl can only increase the bandgap by few meV. CsPbCl3 emerges as a promising alternative to MAPbCl3, enabling 17.2% efficient MA-free 1.8 eV triple-halide perovskite solar cells (0.062 cm2) with enhanced phase- and photostability. Its scalability is demonstrated by slot-die coating a ≈10% efficient WBG perovskite solar module with an aperture area of 52.8 cm2.

Abstract Image

揭示Cl掺入的作用,使可扩展的无ma三卤化物宽带隙钙钛矿用于槽模涂层光伏组件
全钙钛矿串联光伏(PV)应用需要光稳定且高效的1.8 eV宽禁带钙钛矿,但高溴(Br)含量会导致卤化物偏析。为了在较低的Br含量下获得相同的带隙,可以添加MAPbCl3形成三卤化物钙钛矿。然而,大多数三卤化物WBG钙钛矿仍然是由钙钛矿油墨的抗溶剂自旋涂层制备的,不能转移到可扩展的沉积方法。此外,Cl添加剂对带隙和光稳定性的影响尚不明确。本文系统地研究了cl -添加剂,如ACl, PbCl2和APbCl3(其中A表示MA, FA, Cs, Rb),通过n2辅助叶片涂层形成1.8 eV三卤化物钙钛矿,其Br含量为30 mol%。结果发现,PbCl2和APbCl3能使带隙增大几十个meV,而ACl只能使带隙增大几个meV。CsPbCl3作为MAPbCl3的有希望的替代品,可以实现17.2%的无ma 1.8 eV三卤化物钙钛矿太阳能电池(0.062 cm2),具有增强的相稳定性和光稳定性。其可扩展性通过对孔径面积为52.8 cm2、效率约为10%的WBG钙钛矿太阳能组件进行槽型涂层验证。
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来源期刊
Solar RRL
Solar RRL Physics and Astronomy-Atomic and Molecular Physics, and Optics
CiteScore
12.10
自引率
6.30%
发文量
460
期刊介绍: Solar RRL, formerly known as Rapid Research Letters, has evolved to embrace a broader and more encompassing format. We publish Research Articles and Reviews covering all facets of solar energy conversion. This includes, but is not limited to, photovoltaics and solar cells (both established and emerging systems), as well as the development, characterization, and optimization of materials and devices. Additionally, we cover topics such as photovoltaic modules and systems, their installation and deployment, photocatalysis, solar fuels, photothermal and photoelectrochemical solar energy conversion, energy distribution, grid issues, and other relevant aspects. Join us in exploring the latest advancements in solar energy conversion research.
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