Efficient Organic Solar Cell with 16.88% Efficiency Enabled by Refined Acceptor Crystallization and Morphology with Improved Charge Transfer and Transport Properties

Zhu Lei; Zhang Ming; Zhou Guanqing; Hao Tianyu; Xu Jinqiu; Wang Jing; Qiu Chaoqun; Prine Nathaniel; Ali Jazib; Feng Wei; Gu Xiaodan; Ma Zaifei; Tang Zheng; Zhu Haiming; Ying Lei; Zhang Yongming; Liu Feng

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Efficient Organic Solar Cell with 16.88% Efficiency Enabled by Refined Acceptor Crystallization and Morphology with Improved Charge Transfer and Transport Properties

机译：高效的有机太阳能电池具有16.88％的效率，通过改善电荷转移和运输特性，通过精制受体结晶和形态实现了效率。

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Single-layered organic solar cells (OSCs) using nonfullerene acceptors have reached 16% efficiency. Such a breakthrough has inspired new sparks for the development of the next generation of OSC materials. In addition to the optimization of electronic structure, it is important to investigate the essential solid-state structure that guides the high efficiency of bulk heterojunction blends, which provides insight in understanding how to pair an efficient donor-acceptor mixture and refine film morphology. In this study, a thorough analysis is executed to reveal morphology details, and the results demonstrate that Y6 can form a unique 2D packing with a polymer-like conjugated backbone oriented normal to the substrate, controlled by the processing solvent and thermal annealing conditions. Such morphology provides improved carrier transport and ultrafast hole and electron transfer, leading to improved device performance, and the best optimized device shows a power conversion efficiency of 16.88% (16.4% certified). This work reveals the importance of film morphology and the mechanism by which it affects device performance. A full set of analytical methods and processing conditions are executed to achieve high efficiency solar cells from materials design to device optimization, which will be useful in future OSC technology development.

机译：使用非氟联受体的单层有机太阳能电池（OSC）效率达到了16％。这种突破激发了新的火花，用于开发下一代OSC材料。除了电子结构的优化外，还可以研究指导散装异质结合的高效率的基本固态结构，这提供了了解理解如何配对有效供体 - 受体混合物和细膜形态的洞察力。在该研究中，执行彻底的分析以揭示形态细节，结果表明，Y6可以形成唯一的2D填料，其具有定向垂直于衬底的聚合物样共轭主链，由加工溶剂和热退火条件控制。这种形态提供了改进的载波运输和超快孔和电子转移，导致改善的装置性能，最佳优化装置显示出电源转换效率为16.88％（16.4％认证）。这项工作揭示了薄膜形态的重要性以及它影响设备性能的机制。执行完整的分析方法和处理条件，以实现从材料设计到设备优化的高效太阳能电池，这将在未来的OSC技术开发中有用。

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来源
《Advanced energy materials》 |2020年第18期|1904234.1-1904234.9|共9页
作者
Zhu Lei; Zhang Ming; Zhou Guanqing; Hao Tianyu; Xu Jinqiu; Wang Jing; Qiu Chaoqun; Prine Nathaniel; Ali Jazib; Feng Wei; Gu Xiaodan; Ma Zaifei; Tang Zheng; Zhu Haiming; Ying Lei; Zhang Yongming; Liu Feng;
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Shanghai Jiao Tong Univ Frontiers Sci Ctr Transformat Mol Sch Chem & Chem Engn Shanghai 200240 Peoples R China|South China Inst Collaborat Innovat Dongguan 523808 Peoples R China|South China Univ Technol State Key Lab Luminescent Mat & Devices Guangzhou 510640 Peoples R China;

Shanghai Jiao Tong Univ Sch Phys & Astron Shanghai 200240 Peoples R China|Shanghai Jiao Tong Univ Collaborat Innovat Ctr IFSA CICIFSA Shanghai 200240 Peoples R China;

Shanghai Jiao Tong Univ Sch Phys & Astron Shanghai 200240 Peoples R China|Shanghai Jiao Tong Univ Collaborat Innovat Ctr IFSA CICIFSA Shanghai 200240 Peoples R China;

Shanghai Jiao Tong Univ Sch Phys & Astron Shanghai 200240 Peoples R China|Shanghai Jiao Tong Univ Collaborat Innovat Ctr IFSA CICIFSA Shanghai 200240 Peoples R China;

Shanghai Jiao Tong Univ Sch Phys & Astron Shanghai 200240 Peoples R China|Shanghai Jiao Tong Univ Collaborat Innovat Ctr IFSA CICIFSA Shanghai 200240 Peoples R China;

Donghua Univ Coll Mat Sci & Engn Ctr Adv Low Dimens Mat State Key Lab Modificat Chem Fibers & Polymer Mat Shanghai 201620 Peoples R China;

Shanghai Jiao Tong Univ Frontiers Sci Ctr Transformat Mol Sch Chem & Chem Engn Shanghai 200240 Peoples R China;

Univ Southern Mississippi Sch Polymer Sci & Engn Hattiesburg MS 39406 USA;

Shanghai Jiao Tong Univ Sch Phys & Astron Shanghai 200240 Peoples R China|Shanghai Jiao Tong Univ Collaborat Innovat Ctr IFSA CICIFSA Shanghai 200240 Peoples R China;

State Key Lab Fluorinated Mat Zibo 256401 Shandong Peoples R China;

Univ Southern Mississippi Sch Polymer Sci & Engn Hattiesburg MS 39406 USA;

Donghua Univ Coll Mat Sci & Engn Ctr Adv Low Dimens Mat State Key Lab Modificat Chem Fibers & Polymer Mat Shanghai 201620 Peoples R China;

Donghua Univ Coll Mat Sci & Engn Ctr Adv Low Dimens Mat State Key Lab Modificat Chem Fibers & Polymer Mat Shanghai 201620 Peoples R China;

Zhejiang Univ Dept Chem Hangzhou 310027 Peoples R China;

South China Inst Collaborat Innovat Dongguan 523808 Peoples R China|South China Univ Technol State Key Lab Luminescent Mat & Devices Guangzhou 510640 Peoples R China;

Shanghai Jiao Tong Univ Frontiers Sci Ctr Transformat Mol Sch Chem & Chem Engn Shanghai 200240 Peoples R China;

Shanghai Jiao Tong Univ Frontiers Sci Ctr Transformat Mol Sch Chem & Chem Engn Shanghai 200240 Peoples R China|Shanghai Jiao Tong Univ Sch Phys & Astron Shanghai 200240 Peoples R China|Shanghai Jiao Tong Univ Collaborat Innovat Ctr IFSA CICIFSA Shanghai 200240 Peoples R China;

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正文语种 eng
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关键词
2D electron transport; multilength-scaled morphology; nonfullerene acceptors; organic solar cells; power conversion efficiency;

机译：2D电子传输;多长度缩放的形态;非法兰丁主体;有机太阳能电池;电力转换效率;

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1. A nonfullerene acceptor with a 1000 nm absorption edge enables ternary organic solar cells with improved optical and morphological properties and efficiencies over 15% [J] . Liu Tao, Luo Zhenghui, Chen Yuzhong, Energy & environmental science . 2019,第8期

机译：具有1000 nm吸收边缘的非富勒烯受体使三元有机太阳能电池具有改善的光学和形态学特性，效率超过15％
2. A nonfullerene acceptor with a 1000 nm absorption edge enables ternary organic solar cells with improved optical and morphological properties and efficiencies over 15% [J] . Liu Tao, Luo Zhenghui, Chen Yuzhong, Energy & environmental science . 2019,第8期

机译：具有1000nm吸收边缘的非氟伦烯受体使得三元有机太阳能电池具有改善的光学和形态学性能，效率超过15％
3. Unconjugated Side-Chain Engineering Enables Small Molecular Acceptors for Highly Efficient Non-Fullerene Organic Solar Cells: Insights into the Fine-Tuning of Acceptor Properties and Micromorphology [J] . Liu Tao, Gao Wei, Wang Yilin, Advanced Functional Materials . 2019,第26期

机译：非共轭侧链工程使高效高效的非富勒烯有机太阳能电池成为小分子受体：对受体特性和微形态的精细调节的见解
4. Low temperature aggregation transitions in N3 and Y6 acceptors enable double-annealing method that yields hierarchical morphology and superior efficiency in nonfullerene organic solar cells [C] . Yunpeng Qin, Ye Xu, Zhengxing Peng, Conference on Organic, Hybrid, and Perovskite Photovoltaics . 2020

机译：N3和Y6受体中的低温聚集过渡使双退火方法能够在非氟联的有机太阳能电池中产生分层形态和优异的效率
5. I. Ground-state association between phenothiazine and tris(diimine)ruthenium(II) complexes: Its role in highly efficient photoinduced charge separation. II. Ligand modifications of cobalt complexes to increase efficiency of electron-transfer mediators in dye-sensitized solar cells [D] . Weber, John 2012

机译：一，吩噻嗪与三（二亚胺）钌（II）配合物之间的基态缔合：在高效光诱导电荷分离中的作用。二。钴配合物的配体修饰，以提高染料敏化太阳能电池中电子转移介体的效率
6. Enhancement of charge transport properties of small molecule semiconductors by controlling fluorine substitution and effects on photovoltaic properties of organic solar cells and perovskite solar cells [O] . Jae Hoon Yun, Sungmin Park, Jin Hyuck Heo, 2016

机译：通过控制氟取代来增强小分子半导体的电荷传输性能以及对有机太阳能电池和钙钛矿太阳能电池的光伏性能的影响
7. Enhanced Charge Transfer between Fullerene and Non-Fullerene Acceptors Enables Highly Efficient Ternary Organic Solar Cells [O] . -1

机译：富勒烯和非富勒烯受体之间的增强电荷转移使得高效的三元有机太阳能电池

Efficient Organic Solar Cell with 16.88% Efficiency Enabled by Refined Acceptor Crystallization and Morphology with Improved Charge Transfer and Transport Properties

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