Highly Efficient Organic Solar Cells Enabled by the Incorporation of a Sulfonated Graphene Doped PEDOT:PSS Interlayer.
Highly Efficient Organic Solar Cells Enabled by the Incorporation of a Sulfonated Graphene Doped PEDOT:PSS Interlayer.
复制标题
DOI：
10.1021/acsami.2c10407
复制
发表时间：
2022-07
影响因子：
9.5
通讯作者：
Supeng Pei;X. Xiong;Wenkai Zhong;Xiaonan Xue;Ming Zhang;Tianyu Hao;Yongming Zhang;Feng Liu
中科院分区：
文献类型：
--
作者：
Supeng Pei;X. Xiong;Wenkai Zhong;Xiaonan Xue;Ming Zhang;Tianyu Hao;Yongming Zhang;Feng Liu
界面改性层在提高有机太阳能电池（OSC）性能方面起着重要作用。电极中间层材料的结构设计或掺杂可以有效地抑制界面载流子复合并改善有源层与电极之间的欧姆接触，这对于实现高功率转换效率（PCE）是期望的。聚（3，4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）已被广泛用作OSC中的空穴传输层（HTL）。在此，提出了使用磺化石墨烯（SG）作为二次掺杂剂来改进PEDOT：PSS的表面形貌和导电性的改性。在OSC中掺入SG掺杂的PEDOT：PSS作为HTL导致增加的电荷提取，并且显示出PM 6：Y 6器件的17.48%的最佳PCE和PM 6：L 8-BO器件的18.56%的最佳PCE。器件性能的显著改善表明SG-PEDOT：PSS是一种有前途的界面层，用于高效的电荷传输和提取，以实现高效的OSC。
An interface modification layer plays an important role in improving the performance of organic solar cells (OSCs). The structure design or doping of electrode interlayer materials can effectively inhibit interfacial carrier recombination and improve ohmic contact between the active layer and the electrodes, which is desirable for realizing high power conversion efficiencies (PCEs). Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) has been extensively used as a hole-transport layer (HTL) in OSCs. Here, a modification of PEDOT:PSS is proposed using sulfonated graphene (SG) as a secondary dopant for improving the surface morphology and conductivity. The incorporation of the SG-doped PEDOT:PSS as the HTLs in OSCs leads to the increased charge extraction and shows the best PCEs of 17.48% for PM6:Y6 devices and 18.56% for PM6:L8-BO devices. The significant improvement in device performance suggests that SG-PEDOT:PSS is a promising interfacial layer for efficient charge transport and extraction toward high-efficiency OSCs.