当前位置: X-MOL 学术ACS Energy Lett. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Efficient and Stable Pt/TiO2/CdS/Cu2BaSn(S,Se)4 Photocathode for Water Electrolysis Applications
ACS Energy Letters ( IF 22.0 ) Pub Date : 2017-12-19 00:00:00 , DOI: 10.1021/acsenergylett.7b01062
Yihao Zhou 1 , Donghyeop Shin 1, 2, 3 , Edgard Ngaboyamahina 4 , Qiwei Han 1, 2 , Charles B. Parker 4 , David B. Mitzi 1, 2 , Jeffrey T. Glass 1, 4
Affiliation  

The Cu2BaSnS4–xSex (CBTSSe) system has attracted remarkable attention as an emerging chalcogenide semiconductor with desirable electronic and optical properties for solar energy conversion applications. The current study combines sputtered band gap-tailored CBTSSe films with TiO2/CdS protective overlayers to significantly improve photoelectrochemical (PEC) properties as well as device stability in aqueous solutions under AM 1.5G simulated sunlight. The Pt/TiO2/CdS/CBTSSe(x ≈ 3) photocathode exhibits relatively high photocurrent (∼12.08 mA/cm2 at 0 V/RHE, i.e., the highest value reported for CBTSSe-based PEC devices) and stable hydrogen evolution for more than 10 h. The applied TiO2/CdS layers protect the underlying CBTSSe and create desirable band alignment for efficient charge extraction at the heterointerfaces. The present results highlight the opportunities that CBTSSe materials provide as efficient and stable photocathodes for water electrolysis.

中文翻译:

用于水电解的高效稳定的Pt / TiO 2 / CdS / Cu 2 BaSn(S,Se)4光电阴极

作为一种新兴的硫族化物半导体,Cu 2 BaSnS 4– x Se x(CBTSSe)系统吸引了极大的关注,该半导体具有理想的电子和光学特性,可用于太阳能转换应用。当前的研究将溅射带隙量身定制的CBTSSe膜与TiO 2 / CdS保护性覆盖层结合在一起,以显着改善AM 1.5G模拟日光下的光电化学(PEC)性能以及水溶液中的器件稳定性。将Pt /的TiO 2 / CDS / CBTSSe(X ≈3)光电阴极表现出相对高的光电流(~12.08毫安/厘米2在0 V / RHE时,即基于CBTSSe的PEC器件报道的最高值)和稳定的氢气析出超过10小时。所施加的TiO 2 / CdS层可保护下面的CBTSSe,并产生所需的能带排列,以便在异质界面处高效地提取电荷。目前的结果突出了CBTSSe材料作为水电解的有效和稳定的光阴极提供的机会。
更新日期:2017-12-19
down
wechat
bug