Fig. 6From: Wafer-Scale Fabrication of Sub-10 nm TiO2-Ga2O3 n-p Heterojunctions with Efficient Photocatalytic Activity by Atomic Layer DepositionFTIR spectra of ALD-fabricated 2D TiO2 and TiO2-Ga2O3 n-p heterostructures (a) and 2D Ga2O3 and TiO2-Ga2O3 n-p heterostructures (b)Back to article page