| 초록 |
In order to improve the performance of perovskite solar cells, one of the crucial issues is to develop effective hole transporting materials (HTMs). Although spiro-OMeTAD has been demonstrated to be the most effective HTM for perovskite solar cells, the spiro-bifluorene core is relatively expensive. So it is necessary to develop more economical and efficient alternative HTMs. Hole transporting materials based on carbazole moiety have been often employed as charge mediators for solid state dye-sensitized solar cells, due to its features (low-cost of 9H-carbazole starting material, good chemical stability and easy functionalization). In this presentation, carbazole-based three-armed HTMs, coded as SGT-405, SGT-410 and SGT-411, were synthesized for CH3NH3PbI3-xClx based perovskite solar cells. And performance comparison was conducted among these three small molecule HTMs. |
