Water-Free, Conductive Hole Transport Layer for Reproducible Perovskite–Perovskite Tandems with Record Fill Factor,ACS Energy Letters

当前位置： X-MOL 学术 › ACS Energy Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Water-Free, Conductive Hole Transport Layer for Reproducible Perovskite–Perovskite Tandems with Record Fill Factor
ACS Energy Letters ( IF 19.3 ) Pub Date : 2022-11-16 , DOI: 10.1021/acsenergylett.2c02164
Md Arafat Mahmud _{1,

2} , Jianghui Zheng _{1,

2,

3,

4} , Shi Tang _{1,

2} , Chwenhaw Liao _{1,

2} , Guoliang Wang _{1,

2} , Jueming Bing _{1,

2} , Tik Lun Leung _{1,

2} , Anh Dinh Bui ₅ , Hongjun Chen _{1,

2} , Jianpeng Yi _{1,

2} , Stephen P. Bremner ₃ , Hieu T. Nguyen ₅ , Anita W. Y. Ho-Baillie _{1,

2,

3}

Affiliation

State-of-the-art perovskite–perovskite tandem solar cells incorporate a water-based poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) hole transport layer in its low bandgap subcell. However, there is a limitation regarding its use due to the moisture sensitivity of perovskites and the insulating property of PSS. Here, we overcome the limitation by using a water-free and PSS-free PEDOT-based hole transport layer for low bandgap single-junction perovskite solar cells and in perovskite–perovskite tandems. The champion tandem cell produces an efficiency of 21.5% and a fill factor of 85.8%, the highest for any perovskite-based double-junction tandems. Results of photoelectron spectroscopy, Fourier-transform infrared spectroscopy, and conductive atomic force microscopy reveal evidence of enhanced conductivity of water-free and PSS-free PEDOT compared to its conventional counterpart. The use of water-free and PSS-free PEDOT also eliminates decomposition of high bandgap subcell with its interfacing layer stack in a tandem that otherwise occurs with conventional PEDOT:PSS. This leads to enhanced reproducibility of perovskite–perovskite tandems.

中文翻译：

用于可再生钙钛矿-钙钛矿叠层的无水导电空穴传输层，具有创纪录的填充因子

最先进的钙钛矿-钙钛矿串联太阳能电池在其低带隙子电池中加入了水基聚（3,4-乙烯二氧噻吩）：聚苯乙烯磺酸盐（PEDOT：PSS）空穴传输层。然而，由于钙钛矿的湿度敏感性和 PSS 的绝缘特性，其使用受到限制。在这里，我们通过在低带隙单结钙钛矿太阳能电池和钙钛矿-钙钛矿串联中使用无水和无 PSS 的基于 PEDOT 的空穴传输层来克服这一限制。冠军串联电池的效率为 21.5%，填充因子为 85.8%，是任何基于钙钛矿的双结串联电池中最高的。光电子能谱、傅里叶变换红外光谱的结果，和导电原子力显微镜揭示了与传统对应物相比，无水和无 PSS 的 PEDOT 的导电性增强的证据。使用无水和无 PSS 的 PEDOT 还消除了高带隙子电池的分解，其界面层堆叠串联，否则传统 PEDOT:PSS 会发生分解。这导致钙钛矿-钙钛矿串联的可重复性增强。

更新日期：2022-11-16

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11