Contributions of Charge Generation Versus Transport to Photocurrent in Dilute-Donor Organic Solar Cells with Non-fullerene Acceptors
Contributions of Charge Generation Versus Transport to Photocurrent in Dilute-Donor Organic Solar Cells with Non-fullerene Acceptors
复制标题
DOI：
10.1021/acs.jpcc.2c07821
复制
发表时间：
2022-12
期刊：
影响因子：
--
通讯作者：
Boya Zhang;Justin C. Bonner;Weijie Xu;Robert T. Piper;Lakshmi N. S. Murthy;J. Hsu
中科院分区：
文献类型：
--
作者：
Boya Zhang;Justin C. Bonner;Weijie Xu;Robert T. Piper;Lakshmi N. S. Murthy;J. Hsu
比较了基于富勒烯和非富勒烯受体的稀供体有机太阳能电池（DDOSC）中的光电流产生。施主浓度保持在5wt%以下，以避免形成用于空穴传输的逾渗路径，如通过研究绝缘聚合物基质中的空穴迁移率所验证的。三种常见受体的DDOSC中的短路电流密度（JSC）的量化的电荷产生，运输和收集，这是探测使用idealJSC计算的传输矩阵方法，空穴迁移率测量的空间电荷限制电流法，和电荷收集效率，分别。使用非富勒烯受体改善了电荷产生和传输，其中电荷传输在DDOSC中的Jscin测定中更重要。
The photocurrent generation in dilute donor organic solar cells (DDOSCs) based on fullerene and non-fullerene acceptors is compared. The donor concentration is kept under 5 wt % to avoid the formation of a percolation pathway for hole transport, as verified by studying the hole mobilities in an insulating polymer matrix. The short-circuit current densities (Jsc) in DDOSCs for three common acceptors are quantified in terms of charge generation, transport, and collection, which are probed using idealJsccalculated from the transfer matrix method, hole mobility measured from space charge limited current method, and charge collection efficiency, respectively. Using non-fullerene acceptors improves both charge generation and transport, with charge transport being more important in determiningJscin DDOSCs.