Organic Materials最新文献_第10页

Mapping the Side-Chain Length of Small-Molecule Acceptors towards the Optimal Hierarchical Morphology in Ternary Organic Solar Cells 三元有机太阳能电池中小分子受体的侧链长度向最佳分级形态的映射

Organic Materials Pub Date : 2021-04-01 DOI: 10.1055/a-1472-7302

Zichun Zhou, Shengjie Xu, Xiaozhang Zhu

{"title":"Mapping the Side-Chain Length of Small-Molecule Acceptors towards the Optimal Hierarchical Morphology in Ternary Organic Solar Cells","authors":"Zichun Zhou, Shengjie Xu, Xiaozhang Zhu","doi":"10.1055/a-1472-7302","DOIUrl":"https://doi.org/10.1055/a-1472-7302","url":null,"abstract":"Abstract Using multiple light-absorbing materials to realize a broader and better absorption spectrum in multi-component organic photovoltaics has achieved significant success to obtain high power conversion efficiency. Meanwhile, the good materials combinations with matched electronic structure and proper blend morphology for charge generation and transport are of primary importance for implementation of the multi-component strategy. Hierarchical morphology has been clearly demonstrated to improve all performance parameters in ternary organic photovoltaics but shows strong dependence on the molecular structures. Here we develop four small-molecule electron acceptors with different alkyl chain lengths to find the optimal solution of alkyl chain towards the defined hierarchical morphology and carry out a clear and comprehensive investigation of the alkyl chain length effects on the structure–morphology–device performance relationships in ternary blends. There is a positive correlation between the power conversion efficiencies of the four ternary systems and their short-circuit current density parameters, manifesting the significance of distinguishing optimal alkyl side chain length of small-molecule electron acceptors for defined hierarchical morphology to afford efficient carrier generation. The non-optimal side chains would retard the BTR crystallization and make the PC71BM domain sizes incontrollable, leading to a morphology without a defined hierarchy. Such a detailed mapping of the alkyl side chain length of small-molecule electron acceptors provides new insight into the materials combinations for the next-step high-performance multi-component organic photovoltaics.","PeriodicalId":93348,"journal":{"name":"Organic Materials","volume":"03 1","pages":"191 - 197"},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/a-1472-7302","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47251885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Supramolecular Approaches for Taming the Chemo- and Regiochemistry of C60 Addition Reactions 用超分子方法研究C60加成反应的化学和区域化学

Organic Materials Pub Date : 2021-04-01 DOI: 10.1055/s-0041-1727182

Sebastian B. Beil, Max von Delius

引用次数: 2

Synthesis and Self-Assembly Behavior of Double Ullazine-Based Polycyclic Aromatic Hydrocarbons 双乌拉嗪基多环芳烃的合成及其自组装行为

Organic Materials Pub Date : 2021-04-01 DOI: 10.1055/a-1472-6852

Marcus Richter, Michal Borkowski, Yubin Fu, E. Dmitrieva, A. Popov, Ji Ma, T. Marszalek, W. Pisula, Xinliang Feng

{"title":"Synthesis and Self-Assembly Behavior of Double Ullazine-Based Polycyclic Aromatic Hydrocarbons","authors":"Marcus Richter, Michal Borkowski, Yubin Fu, E. Dmitrieva, A. Popov, Ji Ma, T. Marszalek, W. Pisula, Xinliang Feng","doi":"10.1055/a-1472-6852","DOIUrl":"https://doi.org/10.1055/a-1472-6852","url":null,"abstract":"Abstract Polycyclic aromatic azomethine ylides (PAMY, 1) are versatile building blocks for the bottom-up synthesis of nitrogen-containing polycyclic aromatic hydrocarbons (N-PAHs). Although the chemistry of PAMY was already established few years ago, the cycloaddition of a double PAMY building block has not been reported so far. In this work, we demonstrate the first cycloaddition of a PAMY-dimer (6), which opens the access to three different alkyl ester-substituted N-PAHs with a laterally extended double ullazine scaffold (DU-1, DU-2 and DU-3). Interestingly, the cyclic voltammetry of DU-1–3 exhibited three reversible oxidation waves, which confirmed the electron-rich nature of the double ullazine scaffold. Furthermore, in situ spectroelectrochemistry study of ethylhexyl ester-substituted DU-3 revealed the formation of different cationic species with new absorption bands up to 1689 nm. Additionally, the influence of the attached substituents on the film formation and supramolecular organization in the thin films was investigated by polarized optical microscopy and grazing incidence wide-angle X-ray scattering.","PeriodicalId":93348,"journal":{"name":"Organic Materials","volume":"03 1","pages":"198 - 203"},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/a-1472-6852","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48111065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Oligofuran–Benzothiadiazole Co-oligomers: Synthesis, Optoelectronic Properties and Reactivity 低聚呋喃-苯并噻唑共低聚物:合成、光电性质及反应性

Organic Materials Pub Date : 2021-04-01 DOI: 10.1055/s-0041-1729853

Dror Ben Abba Amiel, Choongik Kim, Ori Gidron

引用次数: 0

High-Performance Ternary Organic Solar Cells Enabled by Synergizing Fullerene and Non-fullerene Acceptors 富勒烯和非富勒烯受体协同作用实现的高性能三元有机太阳能电池

Organic Materials Pub Date : 2021-03-31 DOI: 10.1055/a-1472-3989

Yuanyuan Jiang, Xiaozhang Zhu

{"title":"High-Performance Ternary Organic Solar Cells Enabled by Synergizing Fullerene and Non-fullerene Acceptors","authors":"Yuanyuan Jiang, Xiaozhang Zhu","doi":"10.1055/a-1472-3989","DOIUrl":"https://doi.org/10.1055/a-1472-3989","url":null,"abstract":"Abstract With the development of the non-fullerene acceptors (NFAs), the use of ternary organic photovoltaic devices based on a fullerene acceptor and a NFA is now widespread, and the merits of both acceptor types can be fully utilized. However, the effective approach of enhancing device performance is adjusting the charge dynamics and the thin-film morphology of the active layer via introducing the second acceptor, which would significantly impact the open-circuit voltage, the short-circuit current, and the fill factor, thus strongly affecting device efficiency. The functions of the second acceptor in a ternary organic solar cell with a fullerene acceptor and a NFA are summarized here. These include a broader absorption spectrum; formation of a cascade energy level or energy transfer; modified thin-film morphology including phase separation, effects on crystallinity, size, and purity of domain; and vertical distribution along with improved charge dynamics like exciton dissociation and charge transport, collection, and recombination. Then, we discuss the hierarchical morphology in ternary solar cells, which may benefit device performance, and the outlook of the ternary device.","PeriodicalId":93348,"journal":{"name":"Organic Materials","volume":"03 1","pages":"254 - 276"},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/a-1472-3989","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47265755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Strategies for Pore-Diameter Control in Mesoporous Carbons Derived from Organic Self-Assembly Processes 有机自组装过程中介孔碳孔径控制策略

Organic Materials Pub Date : 2021-03-22 DOI: 10.1055/a-1458-5109

S. Naumann

引用次数: 1

Chain-End Effect for Intermediate Water Formation of Poly(2-Methoxyethyl Acrylate) 聚(2-甲氧基乙基丙烯酸酯)中间水形成的链端效应

Organic Materials Pub Date : 2021-03-16 DOI: 10.1055/a-1441-8239

S. Nishimura, T. Ueda, D. Murakami, M. Tanaka

引用次数: 5

Asymmetric Organocatalysis with Chiral Covalent Organic Frameworks 手性共价有机框架的不对称有机催化

Organic Materials Pub Date : 2021-02-25 DOI: 10.1055/a-1400-5581

Songjie Yu, Liang Cheng, Li Liu