Dually Ordered Porous TiO₂‐rGO Composites with Controllable Light Absorption Properties for Efficient Solar Energy Conversion

Abstract

Quadruple-layered TiO films with controllable macropore size are prepared via a confinement self-assembly method. The inverse opal structure with ordered mesoporous (IOM) presents unique light reflection and scattering ability with different wavelengths. Cyan light (400-600 nm) is reflected and scattered by IOM-195, which is in accord with N719 absorption spectra. By manipulating the macropore size, different light responses are obtained.

Promoting Catalytic Oxygen Activation by Localized Surface Plasmon Resonance: Effect of Visible Light Pre‐treatment and Bimetallic Interactions

“…As UV makes up less than 5 % of the solar spectrum, the band gap of TiO 2 represents a major drawback for solar energy utilization. Several methods have been reported in the literature to capture the visible range of the solar spectrum, including doping, organic and inorganic sensitizing, nanostructuring, and incorporating a co‐catalyst …”

“…Severalm ethods have been reported in the literature to capture the visible range of the solar spectrum,i ncluding doping, organic and inorganic sensitizing, nanostructuring, and incorporating ac o-catalyst. [4][5][6][7][8][9][10] In recent years, reports on the localized surface plasmon resonance( LSPR) effect has opened up new possibilities for visible light utilization. [11][12][13][14][15][16][17] The LSPR effect relies on the excitation of electrons on the metal surface, which occurs only at as pecific frequency corresponding to as pecific wavelength that is characteristic of the metal.…”

Sandwich-structured TiO2 inverse opal circulates slow photons for tremendous improvement in solar energy conversion efficiency

“…Such a sandwich-structured PC design has much-increased light trapping effect, which can give rise to the extraordinary light absorbance of the TiO 2 without adding metallic materials such as gold, silver, aluminium and graphene or CdS Inverse Opals. [28][29][30][31][32] Moreover, we also observed an extended electron-hole lifetime in TiO 2 entirely owing to the light manipulation in S-IO-TiO 2 .…”

A Rutile TiO2 Electron Transport Layer for the Enhancement of Charge Collection for Efficient Perovskite Solar Cells

“…[11][12][13][14] TiO 2 is the common ETL material used in highly efficient PSCs, owing to its suitable conduction band, facial and variable deposition methods,c hemical stability,a nd low cost. [15][16][17][18][19] However,t he widely used anatase TiO 2 ETL exhibits relatively low electron mobility and insufficient charge separation at the interface between ETL and perovskite layer, which hinder the further improvement of PSCs. [20] A few methods have been utilized to modify the surface of anatase TiO 2 ,such as doping TiO 2 with inorganic elements Y, Al, Mg, Li, Nb,R u, Zr,a nd so on, [21] or passivating TiO 2 surface using reduced graphene oxide and PCBM etc.…”