Amino-acid-type alkylamine additive for high-performance wide-bandgap perovskite solar cells

IF 13.2 1区工程技术 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Pub Date : 2023-07-15 DOI:10.1016/j.cej.2023.143341

Ting Nie , Junjie Yang , Zhimin Fang , Zhuo Xu , Xiaodong Ren , Xu Guo , Tao Chen , Shengzhong (Frank) Liu

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引用次数: 1

Abstract

A wide-bandgap (WBG) perovskite top component cell is vital for all perovskite-based tandem solar cells. However, such WBG perovskite solar cell (PSC) suffers from inferior crystallinity, huge voltage loss and poor photostability. Herein, we report a amino-acid-type alkylamine, 5-aminolevulinic acid hydrochloride (ALH) additive to address these issues to enhance the performance of WBG PSCs. It is found that the ALH effectively modulates the perovskite crystallization via chemical complexation between the ALH and PbI₂, and enhances the crystallinity of the perovskite film. Moreover, the amino acid ALH not only passivates negatively charged deep-level I_FA and I_Pb anti-site defects via –NH₃⁺ terminals to reduce voltage loss, but also suppresses photo-induced phase segregation via the coordination between –COO⁻ groups and halide vacancies. With these merits, the ALH-based PSC delivers an excellent power-conversion efficiency (PCE) of 21.13%, one of the highest values for inverted WBG PSCs. In addition, the air and thermal stability are also significantly improved. Our findings provide a feasible approach to prepare highly efficient and stable WBG PSCs.

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高性能宽禁带钙钛矿太阳能电池的氨基酸型烷基胺添加剂

宽带隙钙钛矿顶部组件电池是所有钙钛矿基串联太阳能电池的关键。然而，这种WBG钙钛矿太阳能电池(PSC)结晶度差，电压损失大，光稳定性差。在此，我们报道了一种氨基酸型烷基胺，5-氨基乙酰丙酸盐酸盐(ALH)添加剂来解决这些问题，以提高WBG psc的性能。研究发现，ALH通过与PbI2的化学络合作用，有效地调节了钙钛矿的结晶，提高了钙钛矿膜的结晶度。此外，氨基酸ALH不仅通过-NH3 +端钝化带负电的深能级IFA和IPb反位点缺陷以降低电压损失，而且还通过-COO -基团和卤化物空位之间的配合抑制光诱导的相偏析。基于这些优点，基于alh的PSC提供了21.13%的出色功率转换效率(PCE)，这是反转WBG PSC的最高值之一。此外，空气和热稳定性也有明显改善。我们的研究结果为制备高效稳定的WBG psc提供了可行的方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemical Engineering Journal 工程技术-工程：化工

CiteScore

21.70

自引率

9.30%

发文量

6781

审稿时长

2.4 months

期刊介绍： The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.