Hole‐Transporting Materials Incorporating Carbazole into Spiro‐Core for Highly Efficient Perovskite Solar Cells,Advanced Functional Materials

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Hole‐Transporting Materials Incorporating Carbazole into Spiro‐Core for Highly Efficient Perovskite Solar Cells
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2018-12-13 , DOI: 10.1002/adfm.201807094
Xiang‐Dong Zhu ₁ , Xing‐Juan Ma ₂ , Ya‐Kun Wang ₁ , Yun Li ₁ , Chun‐Hong Gao ₂ , Zhao‐Kui Wang ₁ , Zuo‐Quan Jiang ₁ , Liang‐Sheng Liao ₁

Affiliation

Hole‐transporting materials (HTMs) play a significant role in hole transport and extraction for perovskite solar cells (PeSCs). As an important type of HTMs, the spiro‐architecture‐based material is widely used as small organic HTM in PeSCs with good photovoltaic performances. The skeletal modification of spiro‐based HTMs is a critical way of modifying energy level and hole mobility. Thus, many spiro alternatives are developed to optimize the spiro‐type HTMs. Herein, a novel carbazole‐based single‐spiro‐HTM named SCZF‐5 is designed and prepared for efficient PeSCs. In addition, another single‐spiro HTM SAF‐5 with reported 10‐phenyl‐10H‐spiro[acridine‐9,9′‐fluorene] (SAF) core is also synthesized for comparison. Through varying from SAF core to SCZF core as well as comparing with the classic 9,9′‐spiro‐bifluorene, it is found that the new HTM SCZF‐5 exhibits more impressive power conversion efficiency (PCE) of 20.10% than SAF‐5 (13.93%) and the commercial HTM spiro‐OMeTAD (19.11%). On the other hand, the SCZF‐5‐based device also has better durability in lifetime testing, indicating the newly designed SCZF by integrating carbazole into the spiro concept has good potential for developing effective HTMs.

中文翻译：

将咔唑结合到螺芯中的空穴传输材料，用于高效钙钛矿太阳能电池

空穴传输材料（HTM）在钙钛矿太阳能电池（PeSC）的空穴传输和提取中起着重要作用。作为HTM的一种重要类型，基于螺旋结构的材料被广泛用作具有良好光伏性能的PeSC中的小型有机HTM。基于螺旋的HTM的骨架修饰是改变能级和空穴迁移率的关键方法。因此，开发了许多螺旋替代方案来优化螺旋型HTM。在此，为高效的PeSC设计并制备了一种名为SCZF-5的基于咔唑的新型单螺旋HTM。此外，还合成了另一种具有报道的10-苯基-10H-螺[ac啶-9,9'-芴]（SAF）核心的单螺HTM SAF-5，以进行比较。通过从SAF核心到SCZF核心的变化以及与经典的9,9'-螺二芴的比较，我们发现，新型HTM SCZF-5的功率转换效率（PCE）比SAF-5（13.93％）和商用HTM spiro-OMeTAD（19.11％）更高，达到20.10％。另一方面，基于SCZF-5的设备在寿命测试中也具有更好的耐久性，这表明通过将咔唑整合到螺环概念中而新设计的SCZF具有开发有效HTM的良好潜力。

更新日期：2018-12-13

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