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首页> 外文期刊>Advanced energy materials >Highly Efficient and Stable Perovskite Solar Cells Using a Dopant-Free Inexpensive Small Molecule as the Hole- Transporting Material
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Highly Efficient and Stable Perovskite Solar Cells Using a Dopant-Free Inexpensive Small Molecule as the Hole- Transporting Material

机译：使用无掺杂廉价小分子作为空穴传输材料的高效稳定的钙钛矿太阳能电池

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摘要

The hole transporting layer (HTL) plays an important role in realizing efficient and stable perovskite solar cells (PSCs). In spite of intensive research efforts toward the development of HTL materials, low-cost, dopant-free hole transporting materials that lead to efficient and stable PSCs remain elusive. Herein, a simple polycyclic heteroaromatic hydrocarbon-based small molecule, 2,5,9,12-tetra(tert-butyl)diacenaphtho[1,2-b:1',2'-d]thiophenen, as an efficient HTL material in PSCs is presented. This molecule is easy to synthesize and inexpensive. It is hydrophobic and exhibits excellent film-forming properties on perovskites. It has unusually high hole mobility and a desirable highest occupied molecular orbital energy level, making it an ideal HTL material. PSCs fabricated using both the n-i-p planar and mesoscopic architectures with this compound as the HTL show efficiencies as high as 15.59% and 18.17%, respectively, with minimal hysteresis and high long term stability under ambient conditions.
机译：空穴传输层（HTL）在实现高效，稳定的钙钛矿太阳能电池（PSC）中起着重要作用。尽管在开发HTL材料方面进行了深入研究，但可实现高效，稳定PSC的低成本，无掺杂的空穴传输材料仍然难以捉摸。在这里，一个简单的多环杂芳烃基小分子，2,5,9,12-四（叔丁基）二萘并[1,2-b：1'，2'-d]噻吩，作为一种有效的HTL材料介绍了PSC。该分子易于合成且廉价。它是疏水的，在钙钛矿上表现出优异的成膜性。它具有异常高的空穴迁移率和理想的最高占据分子轨道能级，使其成为理想的HTL材料。使用n-i-p平面和介观体系结构（以该化合物作为HTL）制造的PSC分别显示高达15.59％和18.17％的效率，并且在环境条件下具有最小的滞后性和较高的长期稳定性。

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