▎ 摘　　要

An effective method to directly produce high-quality graphene nanowalls (GNWs) on quartz substrates was demonstrated using an advanced self-assembled ratio-frequency plasma-enhanced horizontal tube furnace deposition system under different growth times from 60 s to 150 s at a substrate temperature of 850 degrees C without using any catalyst. The synthesized well-connected three-dimensional GNWs feature outstanding electrical and optical performance: the sheet resistance varies from 1053 Omega/square to 342 Omega/square, while the corresponding transmittance ranges from 90.4% to 67.8% at a wavelength of 550 nm under different growth times. We have also demonstrated that GNWs can be used as transparent conductive electrodes for perovskite solar cells. The highest photovoltaic conversion efficiency of 6.93% can be obtained for the GNWs deposited at a growth time of 120 s. Hence, our study paves a new way of using GNWs as transparent conductive electrodes in perovskite solar cells.