A kind of transparent electrodes with broadband transmission are optimized using the finte different time domain (FDTD) algorithm.The transmissions of the designed Ag, Au and Cu mesh arrays are all about 70% in visible (Vis) band and 90% in near-infrared (NIR) band. In order to improve effectiveness-cost and technology compatibility of transparent electrodes, Cu is a suitable candidate. The effects of packaging materials, roughnesses and error widths of Cu nanostripes are analyzed.The results show that with the increasing refraction indices of packaging materials and roughnesses of Cu nanostripes, the transmissions increase in NIR band and Vis band, respectively, and the NIR bandwidths decrease. As the error widths of Cu nanostripes increase, the transmission properties in Vis-NIR band reduce and NIR bandwidths decrease. The transmissions are high in Vis and NIR bands as the refraction index of packaging material, room mean square of roughness and error width of Cu nanostripes are lower than 1.5, 8 and 20 nm, respectively. The conclusions are helpful for developing transparent electrode of photoelectric devices with broadband transmission.