Ag2S quantum dots-sensitized TiO2 nanotube array photoelectrodes |
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| Authors: | Yi XieSeung Hwa Yoo Chong ChenSung Oh Cho |
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| Affiliation: | Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea |
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| Abstract: | 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. |
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| Keywords: | TiO2 nanotube arrays Ag2S Quantum dots Photoelectrochemistry Visible light |
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