Abstract
Recently, much more attention has been put into organic solar cells due to possibilities of low materials cost, easy solution processing, light weight, and flexibility. Furthermore, the potential of scaling up to large area make it a promising alternative to inorganic solar cell. Most of the promises of the technology have been based on successful laboratory experiments on very small single devices（typically a few mm2）, and very few reports on the experimental production of large area solar cells are found in the literature. In this research, the main directions focus on the PEDOT transparent electrode and metal grid patterns. First, PEDOT solution was drop-coated on small devices. Through a series of experiments for parameters optimization, the power conversion efficiency （PCE） of the device already reaches to 1.8%. Then metal grid with ㄑ shaped were applied to large area devices, analysis of different width and angle of metal grid on the characteristic parameters of organic solar cells. In addition to the experimental data, but also with numerical simulation results can be verified. Through this research, it is expected to investigate the application of transparent electrode which can lower shield ratio and increase the exposure area of light, and to use metal grid patterns with ㄑ shaped structure which can effective distribute the electric field uniformity in the devices to enhance the Jsc and FF and to further increase the device efficiency. Let organic solar cells be more competitive in the future.