Fine fabrication of TiO2/MoOx nano-heterojunctions and investigating on the improved charge transfer for SERS application

Ultraviolet-ozone concomitantly induced MoS2/MoOx heterostructures with improved SERS performance

“…It can be seen that the absorption curves of pure MoS 2 and pure MoO x are in good agreement with Yang et al 's work. 25…”

Challenges and opportunities for SERS in the infrared: materials and methods

“…Heterojunctions have been utilized in SERS applications, but their application is still primarily conned to the visible spectrum. [161][162][163] Semiconductor nanoparticles can be obtained by a variety of bottom-up fabrication techniques, 164 such as precipitation, 165 template assisted, 166 hydrothermal, 160 and sol-gel 167 syntheses. The same techniques can be utilized also for the doping of semiconductors by incorporation of dopant ions into the crystal lattice during nanoparticle growth; 168 alternatively, doping can also be achieved by post-synthetic methods such as diffusion or impregnation.…”

“…Heterojunctions have been utilized in SERS applications, but their application is still primarily confined to the visible spectrum. 161–163…”

“…Heterojunctions have been utilized in SERS applications, but their application is still primarily conned to the visible spectrum. [161][162][163] Semiconductor nanoparticles can be obtained by a variety of bottom-up fabrication techniques, 164 such as precipitation, 165 template assisted, 166 hydrothermal, 160 and sol-gel 167 syntheses.…”

TiO2 compact layer induced charge transfer enhancement in a three-dimensional TiO2–Ag array SERS substrate for quantitative and multiplex analysis

“…For example, semiconductor heterojunction has proved to be a promising SERS substrate to enhance charge transfer enhancement. 33 Interestingly, TiO 2 compact layer (c-TiO 2 ) has been employed in solar cells for blocking the reverse recombination of electrons and holes, and thus promote the solar cell efficiency. [34][35][36] Inspired by this idea, c-TiO 2 can be introduced into the semiconductor heterojunction SERS substrate simply by spin-coating c-TiO 2 layer on a FTO glass, followed by growing TiO 2 nanorods array to form the interface structure.…”