Enhanced photoelectrochemical charge transfer on Mn-doped CdS/TiO2 nanotube arrays: The roles of organic substrates

FABRICATION AND CHARACTERIZATION OF Mn-CdS NANOPLATES AND THEIR PHOTOCATALYTIC PERFORMANCES

“…The lack of a manganese signal indicated that manganese doping did not change the main crystal structure of CdS [9]. However, the peak intensity of G/Mn-doped CdS was obviously stronger than that of G/CdS NP, demonstrating the good crystallization of CdS after Mn-doping [10]. Additionally, the lack of obvious graphene peaks indicated that the graphene was well-dispersed in the nanocomposites [11].…”

Towards energy level cascaded “quantum armours” combating metal corrosion

“…[11] Note that no diffraction peaks from Mn-CdS QDs can be resolved on CAHT NRs composite film because the convolution of their broad diffraction patterns merged into main TiO2 diffraction peaks. [32] The Raman spectra of the TNRs, H-TNRs, A-H-TNRs and quaternary CAHT NRs films were employed to study the composition-dependent lattice variation. [33] In Figure 1b, the curve of TNRs shows three characteristic peaks at about 230, 443 and 606 cm -1 , corresponding to the B1g, Eg, A1g modes of rutile TiO2, respectively.…”

First-Principles Study of the Electron–Hole Recombination Rate at the Interface of the CdSe Quantum Dot and TiO2 Substrate

“…Solar cells provide an alternative way for harnessing solar energy by converting it into electrical energy. In recent years, many works have been performed utilizing quantum dots (QDs) as sensitizers to fabricate QD-sensitized solar cells (QDSSCs), which have a lot of merits such as high absorption coefficient, good photostability in the visible light spectrum, and tunable band gap. − The key component of QDSSCs is a photoanode of the wide band gap oxide semiconductor (usually TiO 2 , ZnO, or SnO 2 ) sensitized by QDs. When the QD absorbs a photon, an electron is excited from an occupied orbital to an unoccupied orbital, generating an electron–hole pair.…”

“…After that, the electron injects from the LUMO of the QD to one of the conduction bands of the oxide semiconductor and subsequently relaxes to the conduction band minimum (CBM). Finally, the transferred electron on the CBM moves to the transparent conducting glass (FTO) and flows into the external circuit. − The above electron transfer processes are shown in Figure S1 in Supporting Information.…”