Materials Science and Engineering: R: Reports最新文献_第7页

Exploring Niobium oxide-based materials for fast-charging lithium-ion anodes: Insights from structure to property 探索用于快速充电锂离子阳极的氧化铌基材料：从结构到性能的见解

IF 31.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: R: Reports

Pub Date : 2024-11-29 DOI: 10.1016/j.mser.2024.100887

Tongtong Li , Frank Krumeich , Luis K. Ono , Ting Guo , Ryusei Morimoto , Chenfeng Ding , Zhong Xu , Meilin Liu , Yabing Qi

The concomitant environmental issues related to the consumption of fossil fuels underscore the significance of accelerating the global electrification. However, the shift towards electrification increases the demands for greater energy density, charging speeds, and safety in electrical energy storage systems such as lithium-ion batteries (LIBs). In pursuit of this goal, one branch of LIBs’ anode research has focused on niobium oxide-based materials, which allow rapid lithium transport within their crystal structures. Although several review articles have offered an overview of the development of niobium oxide-based anode materials, a comprehensive understanding of the correlation between their structure and unique electrochemical property is still lacking. This review explores the intricate crystal structural chemistry of the niobium-oxide system, exploring the structural correlation between niobium pentoxide and its analogues and examining their structure-related electrochemical behaviors and lithium storage mechanism. It also highlights engineering strategies to improve the rate capability of these materials, along with recent advancements in the field. Additionally, this review outlines future research directions and challenges to bridge the gap to practical applications. The goal is to offer fresh perspectives on rational design of more efficient niobium oxide-based electrode materials and beyond, emphasizing both engineering and structural aspects to accelerate their application in fast-charging batteries.

伴随而来的与化石燃料消耗有关的环境问题凸显了加速全球电气化的重要性。然而，向电气化的转变增加了锂离子电池（lib）等电能存储系统对更高能量密度、充电速度和安全性的需求。为了实现这一目标，锂离子电池阳极研究的一个分支集中在氧化铌基材料上，这种材料可以在其晶体结构内快速传输锂。虽然有几篇综述文章对氧化铌基阳极材料的发展进行了概述，但对其结构与独特电化学性能之间的关系仍缺乏全面的了解。本文综述了氧化铌体系复杂的晶体结构化学，探索了五氧化铌及其类似物之间的结构相关性，并研究了它们的结构相关电化学行为和锂储存机制。它还强调了提高这些材料的速率能力的工程策略，以及该领域的最新进展。此外，本文还概述了未来的研究方向和挑战，以弥合与实际应用的差距。目标是为更高效的氧化铌基电极材料的合理设计提供新的视角，并强调工程和结构方面，以加速其在快速充电电池中的应用。

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引用次数: 0

Recent progress of hydrogel-based bioelectronics for mechanophysiological signal sensing 用于机械生理信号传感的水凝胶生物电子学的最新进展

IF 31.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: R: Reports

Pub Date : 2024-11-27 DOI: 10.1016/j.mser.2024.100888

Xuan Huang , Nailin Yang , Shumin Sun , Yuan Cheng , Liang Cheng

Hydrogels, celebrated for their biocompatibility and adaptability, have become instrumental in the development of wearable and implantable bioelectronic devices. This evolution is driven by enhancements in mechanical strength, breathability, self-healing, water-retention, and adhesion capabilities, and the seamless integration of hydrogels with electronics, leading to improved device performance and user compliance. This review underscores the critical role of hydrogels in the sensing of mechanophysiological signals for health monitoring, showcasing their potential to revolutionize personalized medicine. Despite ongoing challenges, the intersection of material science, bioengineering, and advanced manufacturing techniques is fostering innovative solutions. These advancements are paving the way for the next generation of bioelectronics in medical technology, promising to transform health monitoring and personalized treatment approaches significantly.

水凝胶因其生物相容性和适应性而备受赞誉，在可穿戴和植入式生物电子设备的开发中发挥着重要作用。水凝胶在机械强度、透气性、自愈性、保水性和粘附性等方面的增强，以及水凝胶与电子器件的无缝整合，推动了这一领域的发展，从而提高了设备性能和用户顺应性。本综述强调了水凝胶在传感用于健康监测的机械生理信号方面的关键作用，展示了水凝胶彻底改变个性化医疗的潜力。尽管挑战不断，但材料科学、生物工程和先进制造技术的交叉正在促进创新解决方案的产生。这些进步为下一代医疗技术中的生物电子学铺平了道路，有望极大地改变健康监测和个性化治疗方法。

引用次数: 0

Dopant-induced interactions in spiro-OMeTAD: Advancing hole transport for perovskite solar cells 螺-OMeTAD 中多潘诱导的相互作用：推进过氧化物太阳能电池的空穴传输

IF 31.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: R: Reports

Pub Date : 2024-11-27 DOI: 10.1016/j.mser.2024.100875

Yueyao Dong , Florine M. Rombach , Ganghong Min , Henry J. Snaith , Chieh-Ting Lin , Saif A. Haque , Thomas J. Macdonald

Organic semiconductors play a crucial role in the architecture of thin-film electronic devices, particularly as hole transport layers in solar cells. These materials are essential for overcoming significant barriers to improving device lifetime and performance. Among these materials, the small molecule 2,2′,7,7′-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9′-spirobifluorene, known as spiro-OMeTAD, has been instrumental in the development of high-efficiency perovskite solar cells (PSCs) for over a decade. During this time, the additives used to tune the properties of spiro-OMeTAD have undergone significant evolution. Based on current literature, this review examines how interactions in the doping of spiro-OMeTAD have influenced the performance of PSCs, discusses alternatives for future development by highlighting their advantages and limitations, and provides insights into whether spiro-OMeTAD remains the best hole transport material for n-i-p structured PSCs.

有机半导体在薄膜电子设备的结构中发挥着至关重要的作用，尤其是作为太阳能电池的空穴传输层。这些材料对于克服提高设备寿命和性能的重大障碍至关重要。在这些材料中，小分子 2,2′,7,7′-四[N,N-二(4-甲氧基苯基)氨基]-9,9′-螺二芴（又称螺-OMeTAD）十多年来在开发高效率的过氧化物太阳能电池（PSCs）中发挥了重要作用。在此期间，用于调整螺-OMeTAD 性能的添加剂经历了重大演变。本综述以现有文献为基础，探讨了螺-OMeTAD 掺杂过程中的相互作用如何影响了 PSC 的性能，通过强调其优势和局限性讨论了未来发展的替代方案，并深入分析了螺-OMeTAD 是否仍然是 ni-p 结构 PSC 的最佳空穴传输材料。

引用次数: 0

Interfaces in two-dimensional transistors: Key to pushing performance and integration 二维晶体管中的界面：推动性能和集成的关键

IF 31.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: R: Reports

Pub Date : 2024-11-26 DOI: 10.1016/j.mser.2024.100883

Chang Liu , Shuaiqin Wu , Ying Zhang , Xudong Wang , Junhao Chu , Jianlu Wang

Two-dimensional (2D) semiconductors have garnered significant interest due to their atomically thin structure that greatly enhances 'More Moore' dimensional scaling and facilitates the advancement of 'More than Moore' technologies. While 2D transistors hold the promise of unprecedented breakthroughs in atomic-limit device performance, their actual performance has frequently fallen short of expectations. This discrepancy primarily arises from the complex nature of the few critical interfaces (e.g., metal/semiconductor, dielectric/semiconductor) that constitute 2D transistors, and therefore achieving high-quality heterogeneous interfaces is a major challenge for 2D transistor performance and system integration. In this review, we summarize these interfaces and classify them into four types: 1) metal/semiconductor contact interfaces, 2) dielectric/2D channel interfaces, 3) surface and substrate interfaces, and 4) interfaces in wafer-scale integration. From the perspective of forming high-quality interfaces through compatible integration techniques, we analyze in detail the current challenges, development trends and future prospects of these interfaces and highlight their importance in driving the development and future manufacturing integration of 2D transistors. We also present insights into leveraging advanced interface modulation techniques to push the performance boundaries of 2D transistors. This review aims to direct attention to the pivotal role of 2D transistor interfaces, steering scientific research towards enabling the transition of 2D semiconductors from the 'lab to fab' and realizing their full potential.

二维（2D）半导体因其原子级超薄结构而备受关注，这种结构大大提高了 "更摩尔"（More Moore）的尺寸扩展能力，促进了 "比摩尔"（More than Moore）技术的发展。虽然二维晶体管有望在原子极限器件性能方面实现前所未有的突破，但其实际性能往往达不到预期。这种差异主要源于构成二维晶体管的几个关键界面（如金属/半导体、电介质/半导体）的复杂性，因此实现高质量的异质界面是二维晶体管性能和系统集成的一大挑战。在本综述中，我们总结了这些接口，并将其分为四种类型：1) 金属/半导体接触界面；2) 介电/二维沟道界面；3) 表面和衬底界面；4) 晶圆级集成界面。从通过兼容集成技术形成高质量接口的角度出发，我们详细分析了这些接口当前面临的挑战、发展趋势和未来前景，并强调了它们在推动二维晶体管发展和未来制造集成方面的重要性。我们还介绍了利用先进的接口调制技术推动二维晶体管性能极限的见解。本综述旨在引导人们关注二维晶体管接口的关键作用，引导科学研究实现二维半导体从 "实验室到工厂 "的过渡，并充分发挥其潜力。

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引用次数: 0

A review on additive manufacturing of piezoelectric ceramics: From feedstock development to properties of sintered parts 压电陶瓷增材制造综述：从原料开发到烧结部件的性能

IF 31.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: R: Reports

Pub Date : 2024-11-26 DOI: 10.1016/j.mser.2024.100877

Subhadip Bhandari , Gaurav Vajpayee , Lucas Lemos da Silva , Manuel Hinterstein , Giorgia Franchin , Paolo Colombo

Piezoelectric ceramics are extensively used in several engineering applications in the field of sensors, actuators, energy harvesting, biomedical, and many more. Traditional ways of manufacturing piezoelectric devices result in better piezoelectric/ferroelectric performance. However, they are restricted to only simple shapes. With the widespread influence of additive manufacturing (AM), it is now possible to fabricate complex structures which were not possible by conventional technologies. In order to fabricate such complex structures with precision, it is necessary to understand in detail the factors influencing the feedstock preparation and the challenges associated with different AM technologies. With an emphasis on the most commonly used AM techniques (direct ink writing, fused filament fabrication, vat photopolymerization, binder jetting, and selective laser sintering) for fabricating ceramic parts, this review paper intends to provide a deep insight into the factors affecting the feedstock preparation as well as post-processing conditions required to develop a high-performance piezoelectric device. The summarized tables detailing the various piezoelectric ceramic compositions and additives or ingredients used in formulating a printable feedstock, along with the optimum printing and post-processing conditions, will aid the readers in developing their own printable formulations and determining the best post-processing parameters to achieve the best performance out of the fabricated piezoelectric device. The advantages and disadvantages of the AM technologies are analyzed with specific reference to piezoceramic materials and the remaining challenges that require further research are emphasized. Furthermore, with the ongoing and continuous developments in additive manufacturing of piezoelectric materials, it is expected that such advancements will progressively transition towards commercialization, with the ultimate goal of widely incorporating additively manufactured devices into practical applications.

压电陶瓷广泛应用于传感器、致动器、能量收集、生物医学等多个工程领域。传统的压电器件制造方法可以获得更好的压电/铁电性能。但是，它们仅限于简单的形状。随着增材制造（AM）技术的广泛应用，现在可以制造出传统技术无法制造的复杂结构。为了精确地制造这种复杂结构，有必要详细了解影响原料制备的因素以及与不同 AM 技术相关的挑战。本综述论文以制造陶瓷部件最常用的 AM 技术（直接墨水写入、熔融长丝制造、大桶光聚合、粘合剂喷射和选择性激光烧结）为重点，旨在深入探讨影响原料制备的因素以及开发高性能压电器件所需的后处理条件。汇总表详细列出了用于配制可印刷原料的各种压电陶瓷成分、添加剂或配料，以及最佳印刷和后处理条件，这将有助于读者开发自己的可印刷配方，并确定最佳后处理参数，使制造的压电器件达到最佳性能。该书分析了 AM 技术的优缺点，特别是压电陶瓷材料，并强调了需要进一步研究的其余挑战。此外，随着压电材料增材制造技术的不断发展，预计这种进步将逐步向商业化过渡，最终目标是将增材制造设备广泛应用于实际应用中。

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引用次数: 0

Laser crystals from combination paradigm to local structure design: A review on rational design principles, spectroscopic properties and laser applications 从组合范式到局部结构设计的激光晶体：合理设计原则、光谱特性和激光应用综述

IF 31.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: R: Reports

Pub Date : 2024-11-26 DOI: 10.1016/j.mser.2024.100869

Zhen Zhang , Fengkai Ma , Dapeng Jiang , Zhonghan Zhang , Jun Xu , Liangbi Su

Laser crystals have been developed by combination paradigm for more than sixty years, and the methodology is difficult to be continued in uncovering new laser materials. Recently, the local structure design has been proposed and advances have been obtained. This review systematically summarizes the development history of rare earth clusters, cluster structures, evolution characteristics, design principles and the utilization for regulating spectral properties and laser performance of rare earth doped fluorite crystals. We also highlight the future opportunities for development of new laser materials. It is believed that this review will provide valuable insights into rational design principles and new paradigm for development of laser materials.

六十多年来，激光晶体一直是通过组合范式来开发的，这种方法很难在发掘新的激光材料方面得到延续。近年来，局部结构设计被提出并取得了进展。本综述系统地总结了稀土团簇的发展历史、团簇结构、演化特征、设计原理以及在调节掺稀土萤石晶体的光谱特性和激光性能方面的应用。我们还强调了开发新型激光材料的未来机遇。相信这篇综述将为激光材料的合理设计原则和新的开发范例提供宝贵的见解。

引用次数: 0

Metal-organic-framework-derived dual-atom catalysts: from synthesis to electrocatalytic applications 源自金属有机框架的双原子催化剂：从合成到电催化应用

IF 31.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: R: Reports

Pub Date : 2024-11-23 DOI: 10.1016/j.mser.2024.100886

Xiaoqin Xu, Jingqi Guan

The pursuit of high metal utilization in multiphase catalysis has given rise to a growing interest in atomically dispersed catalysts. Dual-atom catalysts (DACs) possess distinctive advantages, including super electrocatalytic performance, maximum atomic utilization, and synergistic effect between the dual central atoms. Metal-organic frameworks (MOFs), a category of crystalline porous substances known for their abundant porosity, excellent designability, and tunable functionality, have been recognized as templates for the construction of DACs for advanced electrocatalysis. This article provides a comprehensive review of the recent advancements in MOF-derived DACs, encompassing their synthesis, structural modulation, and applications in electrocatalysis. The discussion begins by elucidating the synthesis methodologies of MOF-derived DACs and discussing the influence of different DAC architectures on electrocatalytic performance. Additionally, the review highlights the advancements in the synthesis of DACs from various MOF derivatives and their applications in electrocatalytic oxygen reduction (ORR), oxygen evolution reduction (OER), carbon dioxide reduction (CO₂RR), hydrogen evolution reduction (HER), and nitrate reduction reactions (NO₃RR). It would undoubtedly be prudent to anticipate further intriguing advancements in the domain of MOF-derived DACs, which offer tunable reactivity.

为了在多相催化过程中提高金属利用率，人们对原子分散催化剂的兴趣与日俱增。双原子催化剂（DAC）具有独特的优势，包括超强的电催化性能、最大程度的原子利用率以及双中心原子之间的协同效应。金属有机框架（MOFs）是一类结晶多孔物质，以其丰富的孔隙率、优异的可设计性和可调控的功能性而著称，已被认为是构建先进电催化 DACs 的模板。本文全面回顾了 MOF 衍生 DAC 的最新进展，包括其合成、结构调控和在电催化中的应用。讨论首先阐明了 MOF 衍生 DAC 的合成方法，并讨论了不同 DAC 结构对电催化性能的影响。此外，综述还重点介绍了从各种 MOF 衍生物合成 DAC 的进展及其在电催化氧还原 (ORR)、氧进化还原 (OER)、二氧化碳还原 (CO2RR)、氢进化还原 (HER) 和硝酸盐还原反应 (NO3RR) 中的应用。毫无疑问，MOF 衍生的 DAC 具有可调谐的反应活性，我们可以预见该领域将取得更多令人感兴趣的进展。

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引用次数: 0

Catalytic materials based on metals (ions) used in the upcycling of plastics and polymers into fuels and valuable chemicals as part of sustainable development 以金属（离子）为基础的催化材料，用于将塑料和聚合物升级再造为燃料和有价值的化学品，作为可持续发展的一部分

IF 31.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: R: Reports

Pub Date : 2024-11-23 DOI: 10.1016/j.mser.2024.100881

Kacper Pobłocki, Marta Pawlak, Joanna Drzeżdżon, Dagmara Jacewicz

Synthetic plastics have become an essential functional material in almost every aspect of the world around us. Their large-scale production is about 368 million tons per year and is expected to increase to about 800 million tons by 2050. Currently, less than 20 % of post-consumer plastic waste in developed countries is mechanically recycled, but recycled plastics lose their value - known as downcycling. An innovative approach is the upcycling process. The term "upcycling" refers to a form of secondary waste processing that results in higher-value products that are treated as valuable raw materials. It is necessary to use plastic waste as valuable raw materials to produce valuable hydrocarbons and fuels as part of climate neutrality and sustainable circular economy. The purpose of this review is to provide a comprehensive, critical and accessible overview of the general interest of the chemical community, as it will cover the use of a wide range of catalysts in the upcycling of polymers and plastics. Plastics (re)upcycling technologies, innovative highly active transition metal (ion) based catalytic materials, their catalytic pathways and the feasibility of designing such materials are presented. The review is in line with global and urgent environmental, scientific and social needs, not only because of greenhouse gas emissions, waste reduction, but also a key component of climate protection, which is one of the primary goals of sustainable development.

合成塑料已成为我们周围世界几乎方方面面必不可少的功能材料。合成塑料的年产量约为 3.68 亿吨，预计到 2050 年将增至约 8 亿吨。目前，发达国家只有不到 20% 的消费后塑料废物得到机械回收，但回收的塑料会失去价值，这就是所谓的降级回收。一种创新的方法是升级再循环工艺。所谓 "升级再循环"，是指一种二次废物处理方式，可产生价值更高的产品，并被视为有价值的原材料。作为气候中和和可持续循环经济的一部分，有必要将塑料废物作为有价值的原材料来生产有价值的碳氢化合物和燃料。本综述旨在就化学界普遍关心的问题提供一份全面、严谨、易懂的综述，因为它将涵盖聚合物和塑料升级再循环过程中各种催化剂的使用。书中介绍了塑料（再）循环利用技术、基于高活性过渡金属（离子）的创新催化材料、其催化途径以及设计此类材料的可行性。该综述符合全球紧迫的环境、科学和社会需求，这不仅是因为温室气体排放、减少废物，而且也是气候保护的一个关键组成部分，而气候保护是可持续发展的主要目标之一。

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引用次数: 0

Neuromorphic peripheral sensory-computer interface embodied by two-dimensional ultrasensitive circuits 由二维超灵敏电路体现的神经形态外周感觉-计算机接口

IF 31.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: R: Reports

Pub Date : 2024-11-19 DOI: 10.1016/j.mser.2024.100884

Shuiyuan Wang , Keyi Chen , Qiran Zhang , Jinquan Ma , Liyuan Zhu , Yibo Sun , Xiaoxian Liu , Bicheng Wang , Zeng Xu , Xingjian You , Chunsen Liu , Bo Hu , Huajiang Chen , Peng Zhou

The development of neuromorphic interfaces that mimic the exquisite sensitivity and real-time processing capabilities of the biological nervous system poses significant challenges in robotics and medical fields. In this work, we introduce a peripheral sensory-computer interface (PSCI) that employs an ultrasensitive, low-power, and atomically thin two-dimensional (2D) transistor array. This novel interface captures and decodes bioelectrical signals (∼ μV) from sensory nerves with unprecedented precision. Designed to enhance the accuracy of medical diagnostics and therapeutic interventions, the PSCI provides real-time, high-fidelity processing of sensory bio-signals and closed-loop control of bioelectrical stimulation. The PSCI features an array of highly sensitive, multi-channel, 2D transistor (on/off ratio up to 1.31×10⁷, SS as low as 0.07 V/dec) that minimizes bioelectric noise and operates at low voltages to ensure precise, safe, and energy-efficient operation directly on the body. By seamlessly integrating with neuronal physiology, the PSCI enables 28-day precise monitoring and modulation of target organ functions by applying the 0–20 Hz regeneration frequency band and regeneration waveform. This substantial advancement in neuromorphic engineering leverages sophisticated circuit architecture and signal processing capabilities, bridging existing technological gaps and significantly enhancing dynamic biomedical applications through the use of 2D electronics.

在机器人和医疗领域，开发能够模仿生物神经系统的细腻灵敏度和实时处理能力的神经形态接口是一项重大挑战。在这项工作中，我们介绍了一种外围感觉计算机接口（PSCI），它采用了超灵敏、低功耗、原子级薄的二维（2D）晶体管阵列。这种新型接口能以前所未有的精度捕捉和解码来自感觉神经的生物电信号（∼ μV）。PSCI 专为提高医疗诊断和治疗干预的准确性而设计，可对感觉生物信号进行实时、高保真处理，并对生物电刺激进行闭环控制。PSCI 具有高灵敏度、多通道、二维晶体管阵列（开/关比率高达 1.31×107，SS 低至 0.07 V/dec），可最大限度地减少生物电噪声，并在低电压下工作，确保直接在人体上进行精确、安全和节能的操作。通过与神经元生理学的无缝整合，PSCI 可应用 0-20 Hz 的再生频段和再生波形，对目标器官功能进行 28 天的精确监测和调节。神经形态工程学的这一重大进展利用了复杂的电路架构和信号处理能力，弥合了现有的技术差距，并通过使用二维电子技术显著增强了动态生物医学应用。

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引用次数: 0

Brominated isomerization engineering of 1-chloronaphthalene derived solid additives enables 19.68% efficiency organic solar cells 1-chloronaphthalene 衍生固体添加剂的溴化异构工程实现了 19.68% 的有机太阳能电池效率

IF 31.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: R: Reports

Pub Date : 2024-11-18 DOI: 10.1016/j.mser.2024.100879

Han Liu , Hairui Bai , Yibo Zhou , Ping Li , Wenyan Su , Chang Liu , Xunfan Liao , Bohao Song , Xiong Li , Zhaozhao Bi , Chao Zhao , Hongtao Liu , Guanghao Lu , Huiling Du , Long Jiang , Yuhang Liu , Ruijie Ma , Wei Ma , Qunping Fan

Using halogenated additive to optimize the active layer morphology has been proven effective in boosting the power conversion efficiency (PCE) of organic solar cells (OSCs). However, the halogenated isomerism of solid additives, which finely tunes blend morphology, has been understudied, with the associated mechanisms requiring further investigation. Herein, a brominated isomerization engineering using 1-chloronaphthalene (CN)-derived solid additives (2-bromo-1-chloronaphthalene/o-BrCN, 3-bromo-1-chloronaphthalene/m-BrCN, and 4-bromo-1-chloronaphthalene/p-BrCN, respectively) is firstly developed. Among these, p-BrCN, with symmetrically halogenated positions, exhibits a small dipole moment, facilitating an extraordinary non-covalent interaction with both donor and acceptor components. Consequently, the p-BrCN-treated active layer obtains better molecular crystallinity, π-π stacking, and phase separation, helping to improve the exciton dissociation and charge transport of OSCs. Ultimately, the p-BrCN-treated OSC based on PM6:L8-BO offers a higher PCE (18.18%) compared to those treated with o-BrCN (17.89%) and m-BrCN (17.39%). Remarkably, the p-BrCN-treated OSCs based on D18:L8-BO and D18:L8-BO:BTP-eC9 further improve PCEs to 19.14% and 19.68%, placing them among the highest values for binary and ternary OSCs, respectively. This work highlights that brominated isomerization engineering in CN-derived additives is a promising strategy to optimize morphology for obtaining efficient OSCs, and elucidates the underlying mechanism.

使用卤化添加剂优化活性层形态已被证明能有效提高有机太阳能电池（OSC）的功率转换效率（PCE）。然而，固体添加剂的卤代异构作用可精细调整混合形态，但对其研究不足，相关机制也有待进一步研究。本文首次开发了一种使用 1-氯萘 (CN) 衍生固体添加剂（分别为 2-溴-1-氯萘/o-BrCN、3-溴-1-氯萘/m-BrCN 和 4-溴-1-氯萘/p-BrCN）的溴化异构工程。其中，p-BrCN 具有对称的卤化位置，表现出较小的偶极矩，有利于与供体和受体成分发生非同寻常的非共价相互作用。因此，经 p-BrCN 处理的活性层可获得更好的分子结晶度、π-π 堆积和相分离，有助于改善 OSC 的激子解离和电荷传输。最终，基于 PM6:L8-BO 的 p-BrCN 处理 OSC 与 o-BrCN 处理 OSC（17.89%）和 m-BrCN 处理 OSC（17.39%）相比，具有更高的 PCE（18.18%）。值得注意的是，基于 D18:L8-BO 和 D18:L8-BO:BTP-eC9 的 p-BrCN 处理 OSC 的 PCE 进一步提高到 19.14% 和 19.68%，分别跻身二元和三元 OSC 的最高值之列。这项工作突出表明，CN 衍生添加剂中的溴化异构化工程是优化形态以获得高效 OSCs 的一种有前途的策略，并阐明了其基本机制。

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引用次数: 0