Fabrication of CuO_x thin-film photocathodes by magnetron reactive sputtering for photoelectrochemical water reduction

• 作者: Jin-Ping Ao Ruiling Wang Tao Zheng Tian Xie Yuyu Bu
• 来源期刊: 绿色能源与环境：英文版
• 学科: 化学
• 年，卷（期）: 2018,（3）
• 页码范围: 239-246
• 页数: 8页
• 分类号: O646.541

摘要

The CuOx thin film photocathodes were deposited on F-doped Sn O2 （FTO）transparent conducting glasses by alternating current（AC）magnetron reactive sputtering under different Ar:O2 ratios.The advantage of this deposited method is that it can deposit a CuOx thin film uniformly and rapidly with large scale.From the photoelectrochemical（PEC）properties of these CuOx photocathodes,it can be found that the CuOx photocathode with Ar/O2 30:7 provide a photocurrent density ofà3.2 m A cmà2under a bias potentialà0.5 V（vs.Ag/Ag Cl）,which was found to be twice higher than that of Ar/O2 with 30:5.A detailed characterization on the structure,morphology and electrochemical properties of these CuOx thin film photocathodes was carried out,and it is found that the improved PEC performance of CuOx semiconductor photocathode with Ar/O230:7 attributed to the less defects in it,indicating that this Ar/O230:7 is an optimized condition for excellent CuOx semiconductor photocathode fabrication.