| 초록 |
Compared with silicon based inorganic materials, the possibility to use new organic semiconductors offers the prospects of lower manufacturing costs, lightweight solar modules and flexible large-area application. In this study, we designed and synthesized two novel fullerene derivatives, PCMA and PCBA through Diels-Alder reaction, which were confirmed through 1HNMR, 13C NMR and MALDI-TOF Mass. These two fullerene derivatives showed higher light absorption ability in the whole UV-Vis region compared with that of PC61BM in o-DCB solvent. Further, we checked the photovoltaic performance of the bis-adduct. OPVs were fabricated using the configuration as follows: ITO/ PEDOT: PSS/ P3HT: PCBA/ LiF/ Al. The efficiency was enhanced after increasing the annealing temperature and the best performance was as high as 0.71%, with 70 mV higher Voc values compared with PC61BM based OPVs measured under the same conditions. |
