Journal
DALTON TRANSACTIONS
Volume 41, Issue 20, Pages 6130-6136Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2dt12464e
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Funding
- DAE-BRNS, Mumbai through the DAE-BRNS [2008/37/8/BRNS/1489]
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Lead sulphide (PbS) quantum dot (QD) sensitized anatase TiO2 nanocorals (TNC) were synthesized by SILAR and hydrothermal techniques. The TNC, PbS and PbS-TNC samples were characterized by optical absorption, XRD, FT-IR, FESEM and XPS. The results show that PbS QDs are coated on the TNCs, the optical absorption is found to be enhanced and the band edge is shifted to similar to 693 nm as compared with plain TNCs at 340 nm. The PbS-TNC sample exhibits an improved photoelectrochemical performance with a maximum short circuit current (J(sc)) of 3.84 mA cm(-2). The photocurrent density was found to be enhanced 2 fold, as compared with those of the bare PbS photoelectrode. The total power conversion efficiency of the PbS-TNC electrodes is 1.23%.
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