| 초록 |
We synthesized conjugated polymers based on pyridine to use for organic solar cells including electron-deficient groups, 2-{3-[4,6-bis-(4-hexyl-thiophen-2-yl)-pyrimidin-2-yl]-phenyl}-thiazolo[5,4-b]pyridine (mTP) or 2-{4-[4,6-bis-(4-hexyl-thiophen-2-yl)-pyrimidin-2-yl]-phenyl}-thiazolo[5,4-b]pyridine (pTP), and confirm the properties of position of functional group. Conjugated polymers, mPTPBDT-EH, mPTPBDTT-EH, mPTPTTI, pPTPBDT-EH, pPTPBDTT-ET and pPTPTTI were made up of 6-(2-thienyl)-4H-thieno[3,2-b]indole (TTI), or benzo[1,2-b;3,4-b']dithiophene (BDT), or 4,8-bis(5-thiophen-2-yl)benzo[1,2-b:4,5-b']dithiophene (BDTT) as electron rich units and mTP and pTP as electron deficient units. The device including mPTPTTI showed a VOC of 0.72 V, a JSC of 4.95 mA/cm2, and a FF of 0.32, giving a PCE of 1.15%. The device including pPTPTTI showed a VOC of 0.83 V, a JSC of 4.41 mA/cm2, and a FF of 0.31, giving a PCE of 1.13%. |
