Wide-bandgap perovskite solar cells with > 1.34 V Voc for all-perovskite tandems

IF 13.3 1区工程技术 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Pub Date : 2025-05-01 DOI:10.1016/j.cej.2025.163287

Yunfei Li, Nannan Sun, Bo Feng, Wen Li, Zhengbo Cui, Wenxiao Zhang, Sheng Fu, Xiaodong Li, Junfeng Fang

引用次数: 0

Abstract

High V_oc sub-cell is of great importance for all-perovskite tandem solar cells (PSCs). However, wide bandgap (WBG) perovskite usually suffers severe V_oc loss due to Cs-FA inhomogeneity. One key issue lies in the huge difference in crystallization temperature between Cs- and FA-based perovskite. Here, we develop a Cs-FA homogeneity strategy by shortening the difference between Cs/FA crystallization temperature with 1-propylsulfonic-3-methylimida-zolium chloride (SMCI) additive. SMCI will effectively reduce the crystallization temperature of Cs-based perovskite to 105 °C, making it simultaneously crystalized with FA-based perovskite. Resulting SMCI-based WBG PSCs (1.77 eV) achieve an efficiency of 20.03 % with high V_oc of 1.344 V. Furthermore, 2-terminal all-perovskite tandem solar cells are realized with an efficiency of 28.10 %.

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用于全钙钛矿串联的具有 > 1.34 V Voc的宽带隙钙钛矿太阳能电池

高挥发性有机化合物亚电池是全钙钛矿串联太阳能电池的重要组成部分。然而，由于Cs-FA的不均匀性，宽禁带钙钛矿通常会遭受严重的Voc损失。其中一个关键问题在于Cs基钙钛矿和fa基钙钛矿在结晶温度上的巨大差异。本研究通过缩短Cs/FA结晶温度与1-丙基磺酸-3-甲基咪唑-氯化铵（SMCI）添加剂之间的差异，开发了Cs-FA均匀化策略。SMCI将有效降低cs基钙钛矿的结晶温度至105 ℃，使其与fa基钙钛矿同时结晶。由此得到的smci基WBG PSCs（1.77 eV）的效率为20.03 %，Voc高达1.344 V。实现了2端全钙钛矿串联太阳能电池，效率达到28.10 %。

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.

Wide-bandgap perovskite solar cells with > 1.34 V Voc for all-perovskite tandems

Abstract

Wide-bandgap perovskite solar cells with > 1.34 V Voc for all-perovskite tandems