以（硫代）巴比妥酸为端基的新型第三组分提高三元太阳能电池效率

Novel Third Components with (Thio)barbituric Acid as the End Groups Improving the Efficiency of Ternary Solar Cells.

作者信息

Gao Xiang, Ma Xiaoling, Liu Zifeng, Gao Jiaxin, Qi Qingchun, Yu Yue, Gao Yang, Ma Zaifei, Ye Long, Min Jie, Wen Jing, Gao Jianhong, Zhang Fujun, Liu Zhitian

机构信息

Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials, Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, China.

Key Laboratory of Luminescence and Optical Information, Ministry of Education, Beijing Jiaotong University, Beijing 100044, China.

出版信息

ACS Appl Mater Interfaces. 2022 May 25;14(20):23701-23708. doi: 10.1021/acsami.2c03196. Epub 2022 May 12.

DOI:10.1021/acsami.2c03196

PMID:35546579

Abstract

Developing novel third component is critical for the ternary organic solar cells (TOSCs). Herein, we design and synthesize two novel third components, MAZ-1 and MAZ-2, with 1,3-diethyl-2-thiobarbituric acid and 1,3-dimethylbarbituric acid as the weak electron withdrawing end groups, respectively. Both MAZ-1 and MAZ-2 could improve the photovoltaic performance of the binary OSCs based on D18:Y6 which exhibit the power conversion efficiency (PCE) of 17%, because the third components can optimize the phase separation, suppress the bimolecular recombination, and decrease the nonradiative energy loss in ternary blends. The PCE of the optimized TOSCs approaches 18% along with the simultaneous increase in open circuit voltage, short circuit current density, and fill factor by incorporating 10 wt % MAZ-1 and MAZ-2 in acceptors. This work enriches the building blocks for novel third components for achieving highly efficient TOSCs.

摘要

开发新型第三组分对于三元有机太阳能电池（TOSCs）至关重要。在此，我们设计并合成了两种新型第三组分MAZ-1和MAZ-2，分别以1,3-二乙基-2-硫代巴比妥酸和1,3-二甲基巴比妥酸作为弱吸电子端基。MAZ-1和MAZ-2均能提高基于D18:Y6的二元有机太阳能电池（OSCs）的光伏性能，该二元电池的功率转换效率（PCE）为17%，这是因为第三组分可以优化相分离、抑制双分子复合，并降低三元共混物中的非辐射能量损失。通过在受体中加入10 wt%的MAZ-1和MAZ-2，优化后的TOSCs的PCE接近18%，同时开路电压、短路电流密度和填充因子也有所增加。这项工作丰富了用于实现高效TOSCs的新型第三组分的构建模块。