<br>使用 P3HT/PEDOT:PSS 作为双空穴传输层同时提高钙钛矿太阳能电池的效率和稳定性,Nanomaterials

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使用 P3HT/PEDOT:PSS 作为双空穴传输层同时提高钙钛矿太阳能电池的效率和稳定性
Nanomaterials ( IF 4.4 ) Pub Date : 2024-09-11 , DOI: 10.3390/nano14181476
Xiude Yang ₁ , Minghao Luo ₁ , Qianqian Zhang ₁ , Haishen Huang ₁ , Yanqing Yao ₁ , Yuanlin Yang ₂ , Ying Li ₂ , Wan Cheng ₂ , Ping Li ₁

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钙钛矿太阳能电池（PSC）的稳定性问题长期以来一直受到研究人员的关注。聚(3,4-乙撑二氧噻吩)聚苯乙烯磺酸盐(PEDOT:PSS)通常用作倒置PSC中的空穴传输层(HTL)，以实现高效稳定的性能。然而，PEDOT:PSS 会腐蚀 ITO，影响器件效率。此外，PEDOT:PSS 的亲水性会影响器件的稳定性。本工作采用具有良好疏水性的聚(3-己基噻吩-2,5-二基)(P3HT)对PEDOT:PSS进行表面修饰，降低其吸水率，从而提高PSC的效率和稳定性。结果表明，掺入 P3HT 有效增强了 PEDOT:PSS 的疏水性。此外，它还促进了 PEDOT:PSS/P3HT 双层上大晶粒钙钛矿薄膜的发展。这一增强使 PSC 的功率转换效率 (PCE) 达到 19.78%，比参考电池（PCE 的 17.04%）提高了 16%。经过 1000 小时的持续时间后，用 P3HT 修饰的器件的 PCE 保持在 90% 以上，而参考器件的 PCE 低于 70%。这些发现表明，使用 P3HT 与 PEDOT:PSS 作为双层 HTL 可以同时有效地提高 PSC 的效率和稳定性。

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Simultaneously Enhancing the Efficiency and Stability of Perovskite Solar Cells by Using P3HT/PEDOT:PSS as a Double Hole Transport Layer

The stability issue of perovskite solar cells (PSCs) has long been of concern to researchers. Poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) is commonly used as a hole transport layer (HTL) in the inverted PSCs to achieve efficient and stable performance. However, PEDOT:PSS can corrode ITO, affecting device efficiency. Moreover, the hydrophilic nature of PEDOT:PSS compromises device stability. In this work, Poly (3-hexylthiophene-2,5-diyl) (P3HT), known for its good hydrophobicity, was used to modify the surface of PEDOT:PSS, reducing its water absorption and thereby enhancing the efficiency and stability of PSCs. The results reveal that incorporating P3HT effectively enhances the hydrophobicity of PEDOT:PSS. Furthermore, it fosters the development of large-grain perovskite film on the PEDOT:PSS/P3HT bilayer. This enhancement leads to a power conversion efficiency (PCE) of 19.78% for PSCs, with an increase by 16% than that of reference cells (17.04% of PCE). Following a duration of 1000 h, the PCE for the device modified with P3HT remains above 90%, while the PCE of the reference device is below 70%. These findings suggest that using P3HT in conjunction with PEDOT:PSS as a bilayer HTL can concurrently and proficiently improve the efficiency and stability of PSCs.

更新日期：2024-09-11

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