Black phosphorus nanoflakes as morphology modifier for efficient fullerene-free organic solar cells with high fill-factor and better morphological stability
黑磷 nanoflakes 作为为有高充满因素和更好的词法稳定性的有效 fullerene 免费的器官的太阳能电池的形态学修饰词作者机构：State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and Functionalization& Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China Department of Physics Organic and Carbon Electronics Laboratory (ORaCEL) North Carolina State University Raleigh NC 27695 USA State Key Laboratory of Silicon Materials School of Materials Science and Engineering Zhejiang University Hangzhou 310027 China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2019年第12卷第4期
页 面：777-783页
核心收录：
基 金：National Natural Science Foundation of China (Nos. 2173400& 51473142, and 61721005) Zhejiang Province Science and Technology Plan (No. 2018C01047) L. Ye and H. Ade gratefully acknowledge the support by the U.S. Office of Naval Research (ONR, No. N000141712204) X-ray data were acquired at beamlines 11.0.1.2 and 7.3.3 at the ALS, which is a user facility of the U.S. Department of Energy under contract no. DE-AC02-05CH11231. C. Zhu, E. Schaible, A. Hexemer C. Wang of the ALS (DOE) are acknowledged for assisting with the experimental setup and providing instrument maintenance
主 题：fullerene-free organic solar cells black phosphorus nanoflakes morphology tuning device stability
摘 要：Morphology of the donor:acceptor blend plays a critical role in the photovoltaic performance of the organic solar cells (OSCs).Herein,liquid-phase-exfoliated black phosphorus nanoflakes (BPNFs),for their outstanding electronic property and good compatibility to solution process,were applied to fullerene-free OSCs as morphology *** by X-ray scattering measurements,the PTB7-Th:IEICO-4F blends incorporated with BPNFs exhibit more ordered π-π stacking and promoted domain purity,contributing to lower charge transport resistance and suppressed charge recombination within the bulk heterojunction (BHJ).As a result,a high fill factor (FF) of 0.73 and a best power conversion efficiency (PCE) of 12.2% were obtained for fullerene-free OSCs based on PTB7-Th:IEICO-4F blends incorporating with BPNFs,which is among the highest FF of the as-cast fullerene-free OSCs with PCE over 12%.More importantly,the embedded BPNFs help to improve the morphological stability of the devices probably by retarding the phase mixing in the BHJ during the aging ***,analogous enhancements were observed in another fullerene-free OSCs based on PBDB-T:*** a word,this work provides a new strategy of using two-dimentional nanoflakes as facile and universal morphology modifier for efficient fullerene-free OSCs.
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