Studying the Patent of Development on Dye Sensitized Solar Cell

[[abstract]]Due to Greenhouse effect and Global warming become serious problems. Green energy related industries are trying to solve these environmental problems, and advocating reduction of the environment of the ecological damage. It awakened human’s attention and dependence on it. Solar power energy is one of them. In the past, the limited raw material was confined by geographical factors that it was not effectively distributed over the world. Recently, the technology of the prior art also known as Dye-Sensitized has been used. It upgrades into the third generation of innovation. Moreover, it highlights the importance of it. The study found out the relationship between Dye-Sensitized Solar Cell (DSSC) patents and technological innovation, for the sake of future application on the corporation’s research and development. It applied USPTO to figure out the data from the abstract, patent right, and other items. Using Boolean logic combinations found out 459 documents related to DSSC patents in the past 33 years in the world and 141 documents in a past year. This research went further to study the public number, International Patent Classification (IPC), and quote of patent, in order to determine the independence of the patented technology and possibility of infringement. Then, it used social network analysis to explore relevant technological innovation. Finally, it selected five countries, the United States, Japan, South Korea, Taiwan, and Australia, as representatives of the technology diffusion, and ran through social network analysis diagram showing the process of technological innovation. This research found out the DSSC patent in Australia was still in an enlightenment stage. The H01L021/00 was important type of development in Taiwan, the diagram of Japan and South Korea's social network analysis showing the different models of development, and the largest number of applications on DSSC patents are in the USA. This indicated it has abundant human resources in R&D, and E ink Corporation is the most cited of films. Last but not the least, given that it is able to master the technology in advance, it will be more competitive among others