Journal
APPLIED PHYSICS LETTERS
Volume 96, Issue 15, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3386525
Keywords
cadmium compounds; current density; electrochemical electrodes; II-VI semiconductors; photoelectric devices; photoelectrochemical cells; semiconductor nanotubes; semiconductor quantum dots; semiconductor thin films; short-circuit currents; solar cells; titanium compounds
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Funding
- Ministry of Science and Technology [2006CB932401]
- National Science Foundation of China [60871002]
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The photoresponse of TiO2 nanotube-array films in the visible region is shown to have been significantly improved by sensitizing them with CdS and CdSe semiconductor quantum dots using a sequential chemical bath deposition method. These quantum dots served as cosensitizers, and the performance of corresponding photoelectrode was measured in a photoelectrochemical solar cell. A 13.0 mA/cm(2) short circuit current density is achieved with the TiO2/CdS/CdSe photoelectrode under AM 1.5G illuminations, which is higher than the direct sum of CdS and CdSe sensitized TiO2.
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