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Sequential Blade‐Coated Acceptor and Donor Enables Simultaneous Enhancement of Efficiency, Stability, and Mechanical Properties for Organic Solar Cells
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2020-01-13 , DOI: 10.1002/aenm.201903609 Yilin Wang 1 , Qinglian Zhu 1 , Hafiz Bilal Naveed 1 , Heng Zhao 1 , Ke Zhou 1 , Wei Ma 1
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2020-01-13 , DOI: 10.1002/aenm.201903609 Yilin Wang 1 , Qinglian Zhu 1 , Hafiz Bilal Naveed 1 , Heng Zhao 1 , Ke Zhou 1 , Wei Ma 1
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As a predominant fabrication method of organic solar cells (OSCs), casting of a bulk heterojunction (BHJ) structure presents overwhelming advantages for achieving higher power conversion efficiency (PCE). However, long‐term stability and mechanical strength are significantly crucial to realize large‐area and flexible devices. Here, controlling blend film morphology is considered as an effective way toward co‐optimizing device performance, stability, and mechanical properties. A PCE of 12.27% for a P‐i‐N‐structured OSC processed by sequential blade casting (SBC) is reported. The device not only outperforms the as‐cast BHJ devices (11.01%), but also shows impressive stability and mechanical properties. The authors corroborate such enhancements with improved vertical phase separation and purer phases toward more efficient transport and collection of charges. Moreover, adaptation of SBC strategy here will result in thermodynamically favorable nanostructures toward more stable film morphology, and thus improving the stability and mechanical properties of the devices. Such co‐optimization of OSCs will pave ways toward realizing the highly efficient, large‐area, flexible devices for future endeavors.
中文翻译：
顺序叶片涂覆的受体和施主可同时提高有机太阳能电池的效率，稳定性和机械性能
作为有机太阳能电池（OSC）的主要制造方法，体异质结（BHJ）结构的铸造具有实现更高功率转换效率（PCE）的压倒性优势。但是，长期稳定性和机械强度对于实现大面积，灵活的设备至关重要。在这里，控制混合膜的形态被认为是共同优化器件性能，稳定性和机械性能的有效方法。据报道，采用连续叶片浇铸（SBC）处理的P-i-N结构OSC的PCE为12.27％。该设备不仅优于铸态的BHJ设备（11.01％），而且还显示出令人印象深刻的稳定性和机械性能。作者通过改善垂直相分离和更纯的相以更有效地传输和收集电荷来证实这种增强。而且，这里的SBC策略的适应将导致朝着更稳定的膜形态的热力学上有利的纳米结构，并因此提高器件的稳定性和机械性能。OSC的这种共同优化将为实现高效，大面积，灵活的设备铺平道路，以供将来使用。
更新日期：2020-02-18
中文翻译：
顺序叶片涂覆的受体和施主可同时提高有机太阳能电池的效率，稳定性和机械性能
作为有机太阳能电池（OSC）的主要制造方法，体异质结（BHJ）结构的铸造具有实现更高功率转换效率（PCE）的压倒性优势。但是，长期稳定性和机械强度对于实现大面积，灵活的设备至关重要。在这里，控制混合膜的形态被认为是共同优化器件性能，稳定性和机械性能的有效方法。据报道，采用连续叶片浇铸（SBC）处理的P-i-N结构OSC的PCE为12.27％。该设备不仅优于铸态的BHJ设备（11.01％），而且还显示出令人印象深刻的稳定性和机械性能。作者通过改善垂直相分离和更纯的相以更有效地传输和收集电荷来证实这种增强。而且，这里的SBC策略的适应将导致朝着更稳定的膜形态的热力学上有利的纳米结构，并因此提高器件的稳定性和机械性能。OSC的这种共同优化将为实现高效，大面积，灵活的设备铺平道路，以供将来使用。
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