Abstract
Investigation of fabrication in Conjugated polymer solar cells Student：Yu-Li Lin Advisors：Prof. Sheng-Fu Horng Institute of Photonics National Tsing Hua University Abstract The traditional solar cell is as the material with the silicon, because silicon solar cell material cost too high and fabrication is too complicated, the appearance of organic conjugated polymer solar cell has offered one to solve difficult methods met on the traditional solar cell at present. Because organic conjugated polymer solar cell possess flexibility and the potential to scale up to large area., have offered more diversified choice in the use of the solar cell. In our study,we use P3HT(poly (3 - hexylthiophene) and PCBM ([6,6 ] - phenyl-C61-butyric acid methylester) as donor and acceptor, we blended P3HT and PCBM in 1, 2 Dichlorobenzene, and use spin-coating to fabricate on ITO glass base. This bulk heterojunction structure can help carriers transport . In this study we try to realize the effect that change fabriations and enhance power convsion efficiency, reaches 5.3%. We use buffer layer to increase the thickness and enhance the absorption of light . By the increase of the thickness, power conversion efficiency has improve 12%. Keyword: solar cell, photovoltaic,polymer,PCBM,P3HT