{"title":"Coordinating energy-level alignment and morphology in perovskite–organic heterostructures for efficient and stable solar cells","authors":"Ben Fan, Qizhi Jiang, Xingjian Dai, Xiaopeng Xu, Yihui Wu, Qiang Peng","doi":"10.1016/j.mser.2025.101165","DOIUrl":"10.1016/j.mser.2025.101165","url":null,"abstract":"<div><div>Perovskite–organic heterostructure photovoltaics can extend spectral response into the near-infrared while maintaining high photovoltage, yet their efficiencies have trailed best-in-class perovskite single junctions due to interfacial charge accumulation arising from energy-level mismatches, limited carrier mobility, and unfavorable contact at the perovskite/bulk-heterojunction (BHJ) interface. Here, we develop a synergistic ternary-D18-Cl:PY-IT:PC<sub>71</sub>BM-concurrently coordinates morphology and interfacial energetics. The polymeric acceptor PY-IT suppresses excessive aggregation and promotes well-intermixed percolation, while D18-Cl enhances mobility and PC71BM provides an energy “springboard” that alleviates residual donor-induced misalignment. Devices based on this architecture achieve an impressive power conversion efficiency of 26.19 % with a fill factor above 85 % and outstanding operational stability. Spectroscopy and device diagnostics reveal substantially reduced interfacial charge accumulation, suppressed non-radiative losses, and balanced interfacial transport compared with conventional small-molecule acceptor–dominated BHJs. This work presents a general strategy that links ternary BHJ design to interfacial charge control, offering a pathway for high-efficiency, durable perovskite–organic heterostructure solar cells (HSCs).</div></div>","PeriodicalId":386,"journal":{"name":"Materials Science and Engineering: R: Reports","volume":"168 ","pages":"Article 101165"},"PeriodicalIF":31.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145690335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chenyang Cai , Xin Zhao , Guixian Dong , Xiaodan Wu , Chunxiang Ding , Wenbo Chen , Guanben Du
{"title":"Engineering nanocellulose composites for next-generation thermoregulation: Harnessing the structure-property nexus for diverse applications","authors":"Chenyang Cai , Xin Zhao , Guixian Dong , Xiaodan Wu , Chunxiang Ding , Wenbo Chen , Guanben Du","doi":"10.1016/j.mser.2025.101150","DOIUrl":"10.1016/j.mser.2025.101150","url":null,"abstract":"<div><div>The increasing global energy demand necessitates the development of thermal management materials with robust structural stability, multifunctionality, and superior thermal control performance. Although synthetic polymers, 2D materials, and ceramics possess inherent thermal performance, their widespread application is still limited by high costs, complex processing, and environmental concerns. Nanocellulose, owing to its eco-friendly nature, exceptional chemical network (hydrogen bonding), and unique micro- and nanoscale structures, has emerged as an up-and-coming candidate for the construction of functional thermal regulatory materials. By structurally designing and modifying cellulose to optimise its thermal performance and functionality, addressing its highly crystalline structure, heat-diffusion barriers, and scalability, next-generation multifunctional cellulose-based thermal management materials can meet the growing demand for multi-scenario applications. This review provides a comprehensive overview of rationally designed nanocellulose-based composites for thermal energy regulation, underpinned by fundamental heat-transfer mechanisms including conduction, radiation, and storage. We systematically categorise these materials into four groups: thermal insulators, thermal conductors, radiative coolers, and phase-change composites. Beginning with an examination of the intrinsic mechanical, optical, and thermal attributes of nanocellulose, we establish a detailed structure-property-application framework through the lens of interface engineering, hybridisation strategies, and microstructural control. Furthermore, we delve into the latest advancements in nanocellulose-based thermal management materials in thermal storage/release aerogels, flexible thermal conductive heat dissipation films, thermal insulation aerogels, and passive radiative cooling materials. Meanwhile, their applications in energy-saving buildings, wearable personal thermal management, solar cell integration, electronic device thermal management, power generation, and water collection have been explored. Finally, we discuss the future outlook and potential breakthroughs for multifunctional cellulose-based materials in thermal energy regulation.</div></div>","PeriodicalId":386,"journal":{"name":"Materials Science and Engineering: R: Reports","volume":"168 ","pages":"Article 101150"},"PeriodicalIF":31.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145615214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Akkammagari Putta Rangappa , Dharani Praveen Kumar , Khai H. Do , Madhusudana Gopannagari , Kethireddy Arun Joshi Reddy , Xiaowen Ruan , Sai Kishore Ravi , Jun Zhao , Yuexing Zhang , Tae Kyu Kim
{"title":"Self-confined oxidation domains in dual-metal sulfide catalyst enables active sites for selective photoconversion of carbon dioxide to methanol by pure water","authors":"Akkammagari Putta Rangappa , Dharani Praveen Kumar , Khai H. Do , Madhusudana Gopannagari , Kethireddy Arun Joshi Reddy , Xiaowen Ruan , Sai Kishore Ravi , Jun Zhao , Yuexing Zhang , Tae Kyu Kim","doi":"10.1016/j.mser.2025.101093","DOIUrl":"10.1016/j.mser.2025.101093","url":null,"abstract":"<div><div>The selective photoreduction of carbon dioxide (CO<sub>2</sub>) into high-value products, such as methanol, is a highly desirable yet challenging research area. Herein, we report a facile hydro-solvothermal-assisted method (HSM) for constructing dual-metal-site (Sn, In)-based photocatalysts. The resulting composites function as synergistic catalysts, achieving nearly 100 % selectivity for methanol in pure water under an AM1.5 G solar simulator. The formation of a highly stable Sn–C–O–In configuration within the dual-metal-site catalyst (SnIn<sub>4</sub>S<sub>8</sub>) facilitates the promotion of key intermediates (*COOH/*CHO) essential for the selective photoreduction of CO<sub>2</sub> to methanol following protonation. Additionally, the oxidation domains confined on the SnIn<sub>4</sub>S<sub>8</sub> surface can be self-regulated by adjusting the water to ethylene glycol ratio during the HSM process. Experimental and theoretical results indicate that these oxidation domains not only favor the methanol production pathway but also enhance CO<sub>2</sub> adsorption and activation, as well as charge separation and transport. Consequently, the photoreduction efficiency of CO<sub>2</sub> is boosted, achieving rates twenty times higher than those of prismatic SnIn<sub>4</sub>S<sub>8</sub>. This work provides valuable insights into the role of oxidation domains confined within dual-metal sulfides in CO<sub>2</sub> photoreduction, paving the way for higher CO<sub>2</sub> reduction efficiency while maintaining the selectivity of the parent catalyst.</div></div>","PeriodicalId":386,"journal":{"name":"Materials Science and Engineering: R: Reports","volume":"167 ","pages":"Article 101093"},"PeriodicalIF":31.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144903639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ming-Yuan Shen, Zhi-Jie Zhu, Wensha Niu, Tao Wu, Wen-Cui Li, An-Hui Lu
{"title":"Revealing the origins of superior ion diffusion in biphasic layered oxide cathode for sodium-ion batteries","authors":"Ming-Yuan Shen, Zhi-Jie Zhu, Wensha Niu, Tao Wu, Wen-Cui Li, An-Hui Lu","doi":"10.1016/j.mser.2025.101110","DOIUrl":"10.1016/j.mser.2025.101110","url":null,"abstract":"<div><div>P2/O3 biphasic materials have emerged as competitive candidates for high-performance sodium-ion battery cathodes, and a thorough understanding of the ion diffusion behavior in biphasic structures particularly at phase interface is critical for unlocking their full potential. Herein, the Na<sub><em>x</em></sub>Zn<sub>0.07</sub>Ni<sub>0.30</sub>Mn<sub>0.53</sub>Ti<sub>0.10</sub>O<sub>2</sub> cathodes with finely-tuned P2/O3 phase ratios are designed and their ion diffusion mechanism is revealed through in-depth structural-electrochemical investigation. Experiments verify that a balanced phase composition of P2/O3-Na0.82 with 52.83 % P2 and 47.17 % O3 can maximize the coupling advantages of the biphasic structure and exhibit excellent Na<sup>+</sup> diffusion kinetics, delivering a remarkable rate capability (143.0 mAh g<sup>−1</sup> at 0.2 C, 100.2 mAh g<sup>−1</sup> at 10 C with 70.1 % retention), outperforming most reported P2/O3 biphasic cathodes. High-resolution transmission electron microscopy and X-ray absorption fine structure results indicate that the coordination environment of Ni-O and Ni-TM paths undergoes conspicuous local symmetry breaking, driving the P2/O3-Na0.82 interface structure distortions, which exhibit unique characteristics distinct from single-phase systems. Theoretical analyses reveal that the interfacial distortions structures facilitate the overlap of Na<sup>+</sup> energy distributions and create interconnecting bridges across different Na<sup>+</sup> sites, ultimately promoting low-energy-barrier Na<sup>+</sup> diffusion. These findings establish an atomic-level insight into the interface-induced ion diffusion acceleration mechanism in biphasic materials.</div></div>","PeriodicalId":386,"journal":{"name":"Materials Science and Engineering: R: Reports","volume":"167 ","pages":"Article 101110"},"PeriodicalIF":31.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145010252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xiaohan Ma , Latifa W. Allahou , Ren Yang , Yingqi Ma , Myrto Dimoula , David Y.S. Chau , Gareth R. Williams , Jonathan C. Knowles , Alessandro Poma
{"title":"Antiviral molecularly imprinted polymers: Engineered precision for multifunctional therapeutic strategies","authors":"Xiaohan Ma , Latifa W. Allahou , Ren Yang , Yingqi Ma , Myrto Dimoula , David Y.S. Chau , Gareth R. Williams , Jonathan C. Knowles , Alessandro Poma","doi":"10.1016/j.mser.2025.101099","DOIUrl":"10.1016/j.mser.2025.101099","url":null,"abstract":"<div><div>The pressing need for innovative antiviral therapies has accelerated the exploration of molecularly imprinted polymers (MIPs), which exhibit selective and specific biomimetic recognition capabilities. Although originally developed for chemical sensing and diagnostic applications, MIPs have shown considerable potential in antiviral contexts due to their structural adaptability, chemical stability, tunable physicochemical properties, and capacity for tailored target recognition that can rival natural antibodies in certain applications. This review provides a comprehensive overview of virological principles and the limitations of conventional antiviral strategies, followed by a rationale for employing MIPs in antiviral therapeutic applications. It briefly summarizes MIP fabrication methods and examines their antiviral potential across four strategic domains. These include inhibiting viral entry by recognizing intact virions or surface components, disrupting genome synthesis and replication by targeting structural and non-structural proteins as well as viral nucleic acids, enhancing immune responses by interfering with viral immune evasion and promoting immune-mediated clearance, and facilitating antiviral drug delivery through sustained-release carriers, stimuli-responsive platforms, and applications in pharmaceutical detection and purification. In addition to highlighting these applications, the review addresses critical translational challenges such as biocompatibility, off-target effects, large-scale manufacturing, and regulatory considerations, which remain key barriers to real-world deployment of antiviral MIP technologies. Future efforts should emphasize intelligent design tools, biosafety optimization, and standardization to support the safe and effective clinical translation of antiviral MIPs. Together, these insights position MIPs as a highly promising, multifunctional, and technologically adaptable platform that addresses key limitations of conventional therapies and paves the way for next-generation precision antiviral interventions.</div></div>","PeriodicalId":386,"journal":{"name":"Materials Science and Engineering: R: Reports","volume":"167 ","pages":"Article 101099"},"PeriodicalIF":31.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shuangsuo Mao , Yong Zhao , Zelin Cao , Shouhui Zhu , Guangdong Zhou , Bai Sun
{"title":"Bioinspired artificial vision system based on photoelectric memristors","authors":"Shuangsuo Mao , Yong Zhao , Zelin Cao , Shouhui Zhu , Guangdong Zhou , Bai Sun","doi":"10.1016/j.mser.2025.101137","DOIUrl":"10.1016/j.mser.2025.101137","url":null,"abstract":"<div><div>Traditional artificial vision systems are constrained by the von Neumann architecture, which segregates the components responsible for image perception, memory, and processing. This segregation results in low integration, high energy consumption, and inefficient processing. In contrast to traditional vision systems, bio-inspired neuromorphic vision systems utilize photoelectric memristors to integrate sensing, memory, and computation, enabling parallel processing of visual information. These systems can not only emulate the retina direct response to light signals to perform image preprocessing tasks, such as noise reduction and contrast enhancement, but also replicate the image recognition and classification functions of the brain visual cortex. Additionally, they offer a reliable hardware platform to enable progress in complex artificial vision technologies. This review primarily summarizes the research progress in artificial visual systems based on photoelectric memristors, offering an overview of their device structure, working mechanisms, material and device design, as well as their applications and challenges in artificial vision. This work is intended to analyze new technologies and their future outlook, focusing on how they may fuel innovation and facilitate extensive adoption.</div></div>","PeriodicalId":386,"journal":{"name":"Materials Science and Engineering: R: Reports","volume":"167 ","pages":"Article 101137"},"PeriodicalIF":31.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145358039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shao-Xiang Go , Qishen Wang , Yu Jiang , Yishu Zhang , Desmond K. Loke
{"title":"Multifunctional nanomaterials, systems, and algorithms for neuromorphic computing applications: Autonomous systems and wearable robotics","authors":"Shao-Xiang Go , Qishen Wang , Yu Jiang , Yishu Zhang , Desmond K. Loke","doi":"10.1016/j.mser.2025.101095","DOIUrl":"10.1016/j.mser.2025.101095","url":null,"abstract":"<div><div>Memristive devices are the preferred choice for neuromorphic computer architectures, with low-dimensional materials exhibiting unique functionality resembling biological neurons. The ability to adjust these properties presents significant opportunities for artificial neural networks. This review offers a critical investigation of emerging multi-functional (MF) neuromorphic devices enabled by zero-dimensional, one-dimensional, and two-dimensional materials, van der Waals heterojunctions, and their mechanisms. It highlights the multiple unique bio-inspired device responses that arises from quantum confinement, interfaces, and low-dimensional topology. The advancements, obstacles, and potential solutions for effective neuromorphic computing using low-dimensional MF neuromorphic systems are surveyed. This overview highlights the appealing attributes of neuromorphic computing for future computations and explores the potential for advancing neuromorphic algorithms based on low-dimensional MF systems. The development of low-dimensional MF neural networks for autonomous system applications is outlined. This review article investigates the integration of physical, physiological, and environmental data through low-dimensional MF neural networks, which is essential for wearable robotic applications. It also provides a prospective analysis of the opportunities and challenges associated with low-dimensional MF neuromorphic materials compared to conventional bulk electronic technologies.</div></div>","PeriodicalId":386,"journal":{"name":"Materials Science and Engineering: R: Reports","volume":"167 ","pages":"Article 101095"},"PeriodicalIF":31.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144896633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pengyan Zhang , Lei Liu , Dingqin Hu , Peihao Huang , Teng Gu , Xue Jiang , Gengsui Tian , Hongliang Lei , Shiwen Wu , Haiyan Chen , Wei Xie , Fuqing Zhao , Heng Liu , Chen Chen , Kaihuai Tu , Yao Chen , Zeyun Xiao
{"title":"Steric hindrance-induced configuration-locking in self-assembled interfacial layer enables higher surface coverage and 20.14 % efficiency binary organic solar cells","authors":"Pengyan Zhang , Lei Liu , Dingqin Hu , Peihao Huang , Teng Gu , Xue Jiang , Gengsui Tian , Hongliang Lei , Shiwen Wu , Haiyan Chen , Wei Xie , Fuqing Zhao , Heng Liu , Chen Chen , Kaihuai Tu , Yao Chen , Zeyun Xiao","doi":"10.1016/j.mser.2025.101171","DOIUrl":"10.1016/j.mser.2025.101171","url":null,"abstract":"<div><div>Steric effects play a crucial role in determining molecular configuration and orientation, significantly impacting interfacial properties and enabling precise control of surface functionality. A major challenge lies in balancing these effects to prevent excessive distortion or disruption of π-conjugation, while still promoting optimal solid state packing and efficient charge transport. Overcoming this trade-off requires careful molecular design combined with advanced computational modelling, as well as comprehensive interface and device engineering. In this work, two new interfacial molecules, namely <strong>Ph-DIACz</strong> and <strong>Ph-DIBCz</strong>, with adjacent group restrictions are designed and systematically studied in organic solar cells (OSCs). Among them, the sterically hindered <strong>Ph-DIACz</strong> exhibits higher absorption energy, improved surface coverage, and stronger non-covalent interactions. These attributes synergistically enhance electrical conductivity and charge extraction, and the self-assembled monolayers/multilayers (SAMs) surface thereby templates a more ordered active layer morphology. This interfacial and active layer synergy facilitates suppressed recombination throughout the device. As a result, OSC devices employing <strong>Ph-DIACz</strong> achieve a remarkable power conversion efficiency (PCE) of 20.14 % in the PM6:BTP-eC9 binary system, with a significantly elevated fill factor (FF) and short-circuit current density (<em>J</em><sub>SC</sub>) compared to PEDOT:PSS and <strong>Ph-DIBCz</strong>-based devices (PCE 18.39 % and 18.70 %, respectively). Notably, <strong>Ph-DIACz</strong> demonstrates universal applicability in other systems, such as PM6:Y6 and PM6:L8-BO active layer. This work establishes a steric hindrance-induced configuration-locking strategy as a powerful interfacial engineering approach, paving a new way for the development of highly efficient OSCs.</div></div>","PeriodicalId":386,"journal":{"name":"Materials Science and Engineering: R: Reports","volume":"168 ","pages":"Article 101171"},"PeriodicalIF":31.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145836416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mei Yang , Shuling Chen , Yunqi Jia , Liuzhang Ouyang
{"title":"The review of sodium and potassium-ion battery advances in density functional theory: Progresses, challenges and prospects","authors":"Mei Yang , Shuling Chen , Yunqi Jia , Liuzhang Ouyang","doi":"10.1016/j.mser.2025.101097","DOIUrl":"10.1016/j.mser.2025.101097","url":null,"abstract":"<div><div>Sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs) have emerged as promising alternatives for large-scale energy storage due to their abundant raw materials, low cost, and high safety. Density functional theory (DFT) has become a crucial technique for screening electrode materials due to the high cost and time-consuming nature of experimental research. Therefore, we present a systematic discussion of DFT applications in SIBs and PIBs studies. This review first outlines DFT processes and related concepts, including theoretical development, computational content, relevant software, and boundary condition description. It then clarifies the working principles and key challenges of SIBs and PIBs. The third part focuses on three primary implements of DFT. First, structural stability is enhanced through energy reduction, as demonstrated by structural optimization, defect design, and composite phase analysis. Second, the relationship between electronic structure modifications and battery performance is elucidated by examining molecular orbitals, charge density, band structures, and density of states. Third, superior reaction kinetics are predicated upon the identification of optimal ion migration pathways and minimal energy barriers. Finally, to address the inherent limitations of DFT, particularly in computational efficiency, the restricted scale of atoms and electrons, and the accurate modelling of electrochemical conditions, it is recommended to integrate DFT with machine learning and other computational approaches. This combined approach leverages complementary strengths to enhance efficiency and expand simulation scale. This review serves as a valuable reference for research on superior performance SIBs and PIBs, promoting more efficient energy storage solutions.</div></div>","PeriodicalId":386,"journal":{"name":"Materials Science and Engineering: R: Reports","volume":"167 ","pages":"Article 101097"},"PeriodicalIF":31.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xianzhao Liu , Yu Guo , Yunjie Dou , Senji Li, Ziming Chen, Philip C.Y. Chow
{"title":"Strategies to overcome the efficiency-stability conundrum of organic solar cells","authors":"Xianzhao Liu , Yu Guo , Yunjie Dou , Senji Li, Ziming Chen, Philip C.Y. Chow","doi":"10.1016/j.mser.2025.101144","DOIUrl":"10.1016/j.mser.2025.101144","url":null,"abstract":"<div><div>Organic solar cells (OSCs) are promising candidates for flexible, printable, low-cost and environmental-friendly photovoltaic devices. Driven by the development of Y-series non-fullerene acceptors (e.g., Y6 and its derivatives), the power conversion efficiencies (PCEs) of OSCs have improved significantly over the past few years, now exceeding 20 % in single-junction cells. However, current high-efficiency OSCs tend to suffer from performance degradation upon prolonged exposure to solar irradiation and thermal stress, placing a limit on their operation stability and lifetime. In particular, thermodynamic instability of the bulk-heterojunction (BHJ) blend morphology in high-efficiency OSCs is a key factor that limits device operational stability. Here we review the physics underlying thermodynamic stability of BHJ blend morphology, and summarize various molecular and thin-film engineering strategies that have been developed recently to improve the stability of efficient OSCs based on Y-series acceptors. Future directions toward the development of efficient and stable OSCs that can meet the requirements for commercial products are discussed.</div></div>","PeriodicalId":386,"journal":{"name":"Materials Science and Engineering: R: Reports","volume":"168 ","pages":"Article 101144"},"PeriodicalIF":31.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145526368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}