Spirobisindane-Based Hole Transporting Materials for Conventional and Indoor Halide Perovskite Solar Cells

IF 6 3区工程技术 Q2 ENERGY & FUELS

Solar RRL Pub Date : 2025-07-15 DOI:10.1002/solr.202500208

Abdul-Wasir Shaka, Shaoyang Wang, Nirmal Prashanth Maria Joseph Raj, Raja Sekhar Muddam, Neil B. McKeown, Dominic Taylor, Lethy Krishnan Jagadamma, Graeme Cooke

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Abstract

Hole transporting materials (HTMs) are a vital component for both conventional and indoor perovskite solar cells. Spiro-OMeTAD has become one of the most widely studied HTM; however, its high molecular symmetry tends to give rise to nonuniform films that are not conducive to good photovoltaic device stability and large-area processing. Moreover, other issues relating to Spiro-OMeTAD, such as high cost, have spurred investigations into the development of new HTMs. Here, we report two spirobisindane-based HTMs (AS-135 and AS-179) for conventional and indoor perovskite solar cells. The lower symmetry and ability to synthesize from cheap, readily accessible precursors provides obvious advantages over Spiro-OMeTAD. We show that spirobisindane-based HTMs are effective HTMs under both 1 Sun and indoor illumination upon doping with LiTFSi and power conversion efficiency ≈11% were demonstrated under 1 Sun and over 20% under 1000 lx indoor illuminance.

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传统和室内卤化物钙钛矿太阳能电池中基于螺比苯胺的空穴传输材料

空穴传输材料（HTMs）是传统和室内钙钛矿太阳能电池的重要组成部分。Spiro-OMeTAD已成为研究最广泛的热媒之一；然而，它的高分子对称性容易产生不均匀的薄膜，不利于光伏器件的良好稳定性和大面积加工。此外，与Spiro-OMeTAD相关的其他问题，如高成本，也促使人们研究开发新的htm。在这里，我们报道了两种基于螺比星烷的HTMs （AS-135和AS-179）用于常规和室内钙钛矿太阳能电池。相对于Spiro-OMeTAD，较低的对称性和从廉价、容易获得的前体合成的能力提供了明显的优势。我们发现，掺杂LiTFSi后，在1个太阳和室内光照下，基于螺旋星烷的HTMs都是有效的HTMs，在1个太阳光照下，功率转换效率约为11%，在1000 lx室内光照下，功率转换效率超过20%。

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来源期刊

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.