A hybrid ZnO nanoparticle electron transporting layer for inverted structure organic solar cells with efficiency over 19%

IF 9.7 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Science China Chemistry Pub Date : 2024-11-04 DOI:10.1007/s11426-024-2341-8

Xin Chen, Jian Liu, Zheng Xiao, Zhaochen Suo, Jie Wang, Zhaoyang Yao, Chenxi Li, Xiangjian Wan, Yongsheng Chen

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Abstract

Electron transport layers (ETLs) play a pivotal role in determining the efficiency and stability of inverted structure organic solar cells (OSCs). Zinc oxide nanoparticles (ZnO NPs) are commonly used as ETLs due to their mild deposition conditions and compatibility with flexible plastic substrates, facilitating scalable manufacturing. In this study, we introduce a molecule called NMO, which serves a dual purpose: efficiently dispersing ZnO nanoparticles and acting as a surface modification layer for ZnO NPs thin films. The hybrid ETL created by blending and surface modification with NMO significantly enhances both the efficiency and stability of OSCs. Inverted structure OSCs, based on the PM6:Y6 system and utilizing the hybrid ETL, achieve impressive power conversion efficiency (PCE) of 18.31%. Moreover, these devices demonstrate exceptional stability during shelf storage (T₈₀ = 19,650 h), thermal aging (T₈₀ = 7783 h), and maximum power point tracking (T₈₀ = 3009 h). Importantly, the hybrid ETL exhibits good generality, as all tested OSCs utilizing it display significantly improved efficiencies and stabilities. Notably, a PCE of 19.23% is attained for the PM6:BTP-eC9-based device, marking the highest reported efficiency for inverted single-junction OSCs to date.

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一种用于倒置结构有机太阳能电池的ZnO纳米杂化电子传输层，效率超过19%

电子传输层（ETLs）对倒置结构有机太阳能电池（OSCs）的效率和稳定性起着关键作用。氧化锌纳米颗粒（ZnO NPs）由于其温和的沉积条件和与柔性塑料衬底的相容性，易于扩展制造，通常用作etl。在这项研究中，我们引入了一种名为NMO的分子，它具有双重作用：有效分散ZnO纳米粒子，并作为ZnO NPs薄膜的表面修饰层。通过与NMO共混和表面改性制备的杂化ETL显著提高了osc的效率和稳定性。基于PM6:Y6系统和混合ETL的倒立结构OSCs实现了18.31%的功率转换效率（PCE）。此外，这些器件在货架存储（T80 = 19,650 h），热老化（T80 = 7783 h）和最大功率点跟踪（T80 = 3009 h）期间表现出出色的稳定性。重要的是，混合ETL表现出良好的通用性，因为所有使用它的测试OSCs都显示出显着提高的效率和稳定性。值得注意的是，基于PM6: btp - ec9的器件的PCE达到了19.23%，这标志着迄今为止报道的倒置单结OSCs的最高效率。

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来源期刊

Science China Chemistry CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

14.40

自引率

7.30%

发文量

3787

审稿时长

2.2 months

期刊介绍： Science China Chemistry, co-sponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China and published by Science China Press, publishes high-quality original research in both basic and applied chemistry. Indexed by Science Citation Index, it is a premier academic journal in the field. Categories of articles include: Highlights. Brief summaries and scholarly comments on recent research achievements in any field of chemistry. Perspectives. Concise reports on thelatest chemistry trends of interest to scientists worldwide, including discussions of research breakthroughs and interpretations of important science and funding policies. Reviews. In-depth summaries of representative results and achievements of the past 5–10 years in selected topics based on or closely related to the research expertise of the authors, providing a thorough assessment of the significance, current status, and future research directions of the field.