Photosensitization of TiO2 Nanostructures with CdS Quantum Dots: Particulate versus Tubular Support Architectures

By D. Baker, Prashant Kamat. 2009

772 citations recorded by the source corpus.

TiO2 nanotube arrays and particulate films are modified with CdS quantum dots with an aim to tune the response of the photoelectrochemical cell in the visible region. The method of successive ionic layer adsorption and reaction facilitates size control of CdS quantum dots. These CdS nanocrystals, upon excitation with visible light, inject electrons into the TiO2 nanotubes and particles and thus enable their use as photosensitive electrodes. Maximum incident photon to charge carrier efficiency (IPCE) values of 55% and 26% are observed for CdS sensitized TiO2 nanotube and nanoparticulate architectures respectively. The nearly doubling of IPCE observed with the TiO2 nanotube architecture is attributed to the increased efficiency of charge separation and transport of electrons.

Subfields: Materials Chemistry, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/b149d045ceeb00da70b145e1796ee7cd3e514c6f

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In Materials Chemistry

1. Prashant Kamat
2. K. Tvrdy
3. P. Frantsuzov
4. Yi‐Jun Xu
5. Jiaguo Yu
6. Nan Zhang
7. E. Selli
8. G. Chiarello

In Renewable Energy, Sustainability and the Environment

1. Prashant Kamat
2. K. Tvrdy
3. P. Frantsuzov
4. E. Selli
5. G. Chiarello
6. Yi‐Jun Xu
7. A. Ibhadon
8. P. Fitzpatrick

Citations in the corpus

• Photoinduced electron transfer from semiconductor quantum dots to metal oxide nanoparticles (2010, result): “Further, in comparison with nanoparticulate films, multiple studies have noted larger ISC in tubular TiO2 architectures designed to reduce grain boundary resistance (25, 46, 47).”