Fluorine treatment on PEDOT:PSS for small molecule organic solar cell

• Main Authors: Chan-Yi Du, 杜棧依
• Other Authors: 蘇昭瑾
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/5y7jn8

碩士 === 國立臺北科技大學 === 有機高分子研究所 === 100 === According to the former research, when utilizes Pentacene as active layer to deposit on PEDOT: PSS for small molecule organic solar cell, the Pentacene occurs a phenomenon which dendritic-like(001) grain and fiber-like(110) grain are biphase coexistent. The related records also show that the phenomenon of biphase coexistence increases the possibility of scatter when charges were being transported and causes the mobility of charges to decrease. In the device performance, we would like to discuss the influence of Pentacene crystallinity and the device electrical property between the change of PFAS in the layers of PEDOT: PSS and Pentacene. Utilizing PFAS successfully lowers the surface energy on the layer of PEDOT: PSS. The analyses of AFM and XRD show that the treatment of PFAS causes fiber-like crystallite (110) of Pentacene disappearing and leaves crystalline grain (001) only. The device efficiency enhances from 0.94% to 1.38% after PFAS treatment, JSC enhances from 6.4 mA/cm2 to 8.19 mA/cm2, and VOC enhances from 0.29 V to 0.33 V. Then we try to improve the device performance by thermo annealing, the efficiency enhances to 1.73% in 180℃, VOC enhances from 0.33V to 0.45V. From XRD analysis, the Pentacene crystallite can transform from (001) to (001’) completely to form a similar single crystal when temperature more than 180℃.