The optical properties of alternating ultrathin TiO nanosheets and CdS nanoparticle hybrid spherical structures designed by the layer-by-layer (LBL) assembly technique are investigated. From the photoluminescence (PL) spectral measurements on the hybrid spherical structures, a spectrum-shifted fluorescence emission occurs in this novel hybrid material. The time-resolved PL measurements exhibit a remarkably increased PL lifetime of 3.75 ns compared with only TiO spheres or CdS nanoparticles. The novel results were attributed to the enhanced electron-hole separation due to the new type II indirect optical transition mechanism between TiO and CdS in a charge-separated configuration.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5842163 | PMC |
| http://dx.doi.org/10.1186/s11671-018-2488-3 | DOI Listing |
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