Fig. 1From: Photoelectrochemical Performance of Quantum dot-Sensitized TiO2 Nanotube Arrays: a Study of Surface Modification by Atomic Layer Deposition CoatingSEM 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 inset in a is a cross-sectional view of the well-aligned quantum dot-sensitized TiO2 nanotube arrays without any overlayerBack to article page