Ag2S quantum dots-sensitized TiO2 nanotube array photoelectrodes

作者：Xie, Yi; Yoo, Seung Hwa; Chen, Chong; Cho, Sung Oh^*

来源：Materials Science and Engineering B-Solid State Materials for Advanced Technology, 2012, 177(1): 106-111.

DOI：10.1016/j.mseb.2011.09.021

• TiO2 nanotube arrays
• Ag2S
• Quantum dots
• Photoelectrochemistry
• Visible light

Ag2S quantum dots (QDs) were deposited on ordered TiO2 nanotube arrays (TNTAs) using a sequential chemical bath deposition (S-CBD) approach. AgNO3 and thiourea were used as the precursor materials of Ag and S2- ions, respectively. The decoration of Ag2S QDs significantly shifted the absorption spectrum of the TNTAs to visible light region. As a result, Ag2S QDs-sensitized TNTAs exhibited much higher photocurrent density than pure TNTAs under visible light irradiation.

• 出版日期2012-1-25