光电流
材料科学
异质结
钝化
制作
光电子学
能量转换效率
带隙
纳米技术
兴奋剂
光电化学
制氢
氢
图层(电子)
化学工程
电极
电化学
物理化学
病理
工程类
有机化学
医学
化学
替代医学
作者
Peng Guan,Hong‐Ye Bai,Chunfa Li,Yilin Ge,Dongbo Xu,Biyi Chen,Teng Xia,Weiqiang Fan,Weidong Shi
标识
DOI:10.1002/admi.201701574
摘要
Abstract Overcoming one of most challenging limitations of bare TiO 2 with large bandgap can be achieved by rational design and fabrication of heterostructures. Multicomponent sulfides with a nature of tunable band structure can be a good alternative to decorating TiO 2 , but there remains a major trade‐off between the high efficiency and the long‐term durability, so the stability issue must be addressed upon the use of sulfides. Here, an effective strategy is demonstrated with Bi‐doped AgIn 5 S 8 (Bi‐AgIn 5 S 8 ) decorated TiO 2 photoanode, where twofold enhancement of the photocurrent is achieved. More importantly, it is the first time to integrate polydopamine passivation layer and AgIn 5 S 8 for simultaneously enhancing the solar conversion efficiency and stability. The incident photon‐to‐current conversion efficiency value is tuned up to 45% (0.4 V vs Ag/AgCl), and the photocurrent density can keep for 90.8% after 5 h. Corresponding hydrogen evolution rate has increased to 8.6 µmol h −1 , which is three times higher than that of bare TiO 2 .
科研通智能强力驱动
Strongly Powered by AbleSci AI