Abstract
In order to compare the conjugated polymer mobility in sandwich device with horizontal device, We utilize photolithography technology to manufacture horizontal electrodes (with different metals) on glass. After conjugated polymer was spun on glass, its chains should be horizontal to electrode. We fit the measurement results to space charge limited current model, and then discover the hole mobility increases 2∼3 orders. Electric field coefficient in horizontal devices was the same，but different metal electrodes affect its electrical characteristics. It may be useful to improve the polymer thin film transistor.