Water-assisted growth of aligned carbon nanotube-ZnO heterojunction arrays

Using water-assisted chemical vapor 7 deposition, aligned CNT-ZnO (CNT: carbon nanotube) heterojunctions are formed on a Zn substrate. The aligned CNT heterojunctions with intimately connected ZnO particles/rods show interesting optoelectronic properties of practical significance. This cost-effective and efficient approach can be scaled up for the production of large-area heterojunction arrays (see figure).