电导率
能量转换效率
有机太阳能电池
佩多:嘘
材料科学
多金属氧酸盐
磷钼酸
兴奋剂
咔唑
化学工程
光电子学
化学
纳米技术
图层(电子)
光化学
催化作用
复合材料
有机化学
聚合物
物理化学
工程类
作者
Zhibin Pei,Di Hu,Wenlong Liu,Zhe Yin,Yonggang Wu,Xinjun Xu,Youzhi Wu,Zhishan Bo
出处
期刊:ACS applied energy materials
[American Chemical Society]
日期:2023-06-01
卷期号:6 (11): 6237-6242
被引量:1
标识
DOI:10.1021/acsaem.3c00761
摘要
Polyoxometalate inorganic clusters (PICs) as a kind of environmentally friendly material can potentially act as an effective hole transport layer (HTL) in organic solar cells (OSCs) due to their thermally stable, low-cost, easily soluble, and excellent redox properties. However, their low conductivity often limits the applications in high-efficiency OSCs. Here, we use a carbazole derivative (2PACz) to modify the bivalent tin (Sn2+) doped phosphomolybdic acid (H3PMo12O40) (termed HPMO-Sn) to further increase the conductivity. The resulted HPMO-Sn:2PACz HTL displays an improved hole transport ability, enhanced conductivity, increased exciton dissociation efficiency, and low nonradiative energy loss in OSCs. As a result, OSCs employing HPMO-Sn:2PACz as the HTL and PM6:Y6 as the active layer exhibit higher power conversion efficiency (17.62%) than those using HPMO-Sn (efficiency: 16.40%) or PEDOT:PSS (efficiency: 16.45%) as the HTL with enhanced open-circuit voltage and fill factor. Our results provide an effective method to elevate the conductivity of PICs and demonstrate the possibility of using the modified PICs as an effective HTL to achieve high-efficiency OSCs.
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