光电阴极
光电流
异质结
材料科学
分解水
光电子学
氧化锡
能量转换效率
电极
可逆氢电极
光电化学
活动层
半导体
纳米技术
化学工程
兴奋剂
图层(电子)
化学
电化学
光催化
工作电极
有机化学
催化作用
物理
电子
量子力学
薄膜晶体管
物理化学
工程类
作者
Yanling Wu,Deyu Liu,Huanglong Zhuang,Jia‐Bo Le,Yongbo Kuang
标识
DOI:10.1016/j.cclet.2022.04.078
摘要
Organic semiconductors are promising candidates as photoactive layers for photoelectrodes used in photoelectrochemical (PEC) cells due to their excellent light absorption and efficient charge transport properties with the help of interfacial materials. However, the use of multilayers will make the charge transfer mechanism more complicated and decrease the PEC performance of the photoelectrode caused by the increased contact resistance. In this work, a PM6:Y6 bulk heterojunction (BHJ)-based photocathode is fabricated for efficient PEC hydrogen evolution reaction (HER) in an acidic aqueous solution. With RuO2 as an interfacial modification layer, the photocathode with a simple structure (fluorine-doped tin oxide (FTO)/PM6:Y6/RuO2) generates a maximum photocurrent density up to −15 mA/cm2 at 0 V vs. reference hydrogen electrode (RHE), outperforming all previously reported BHJ-based photocathodes in terms of PEC performance. The highest ratiometric power-saved efficiency of 3.7% is achieved at 0.4 V vs. RHE.
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