TiO2 assisted sensitivity enhancement in photosensitive nanocrystal skins

Summary form only given. This paper demonstrated the great broadband enhancement in the sensitivity of light-sensitive nanocrystal skin (LS-NS) via the transfer of photogenerated electrons to the TiO₂ layer. With the integration of TiO₂ as an electron acceptor, a decrease in the electron-hole recombination probability resulting in broadband sensitivity improvement across 350-475 nm and a significant photovoltage sensitivity improvement in the proposed nanostructure platform were achieved. It was also observed that the controlled thickness between the CdTe monolayer and the TiO₂ layer enables the rise in sensitivity to the percentage values of 22%. Therefore, it is believed that these results are not only scientifically interesting but also technologically important and useful. These findings have significant implications for the future design of photosensing platforms and for moving toward the next generation of large-surface light-sensing devices based on semiconductor NCs, including smart transparent windows, light-sensitive walls and large-area optical detection systems.