Fig. 2From: Photoelectrochemical Performance of Quantum dot-Sensitized TiO2 Nanotube Arrays: a Study of Surface Modification by Atomic Layer Deposition CoatingTEM images of TNTAs/QDs with various ALD cycles overlayer: a 0 cycles, b 30 cycles Al2O3, c 10 cycles ZnO, and d 25 cycles TiO2. The insets are the corresponding low-resolution TEM imagesBack to article page