Abstract
Zinc Oxide (ZnO) has received high attention because of its high mobility and air-stable, which makes it attractive for use in inverted organic solar cells. Many research groups reported that ZnO thin films were prepared by atomic layer deposition (ALD), spin-coating, sputtering, and spray-coating etc. Using Chemical bath deposition to fabricate Zinc oxide as electron selective layer in organic solar cells is a novel technique. The Chemical bath deposition with potential advantages of enabling a large-area coating, low-cost and low-temperature can overcome the drawbacks of other processes. In this work, ZnO thin films used as electron selective layer were successfully deposited on glass/ITO substrates by the method of chemical bath deposition in organic solar cells. The devices exhibit a PCE of 3.93% with optimum film thickness and annealing temperature, and achieved 4.61% after electrode treatment.