Yttrium-Doped ZnO Nanorod Arrays for Increased Charge Mobility and Carrier Density for Enhanced Solar Water Splitting

Abstract

Qiao (2019) Yttrium doped ZnO nanorod arrays for increased charge mobility and carrier density for enhanced solar water splitting.

Advances in Doped ZnO Nanostructures for Gas Sensor

“…It can effectively reduce the working temperature and recovery/response time of the sensor (Figure 2e–f). Similarly, when ZnO doped with transition metal elements, the morphology, electronic structure, band gap, electron transport capacity and surface defects of ZnO nanomaterials are significantly affected [19d,39a,b,c,d] …”

“…The transition metal ions doped into the lattice of ZnO by physical or chemical methods [19d,40a,b] . Transition metals exhibit distinct properties compared to other elements due to their unfilled valence orbitals [41] .…”

“…Transition metals (such as Fe, Cu, Ni, Y, etc.) have been widely used as dopant, which have shown ability to increase the sensitivity [19a,b,c,d] . Metal oxide (SnO 2 , CuO etc.)…”

Solar Cells with High Short Circuit Currents Based on CsPbBr3 Perovskite-Modified ZnO Nanorod Composites

“…The conduction and valence band positions of ZnO and TiO2 were determined by x-ray photoelectron spectroscopy (XPS) displayed in Figure S2 combined with UV-Vis absorption spectroscopy. 21 The other values were found in literature as expanded in Table S1. By employing the coating strategy, electron transfer from CsPbBr3 to ZnO conduction band becomes more favourable via the better aligned conduction band of the TiO2 shell.…”

“…20 Yttrium was selected as a dopant as past work revealed its role in conductivity gain: Increasing both dopant density and charge mobility. 21 Using a two-step deposition method the photoactive perovskite showed good infiltration between the NRs, yielding layers with very high photoabsorption. Modification of ZnO with Y doping and TiO2 coating gave record short circuit currents for CsPbBr3 of >10 mA cm -2 , in an efficient optical wave-guide and charge transfer system.…”