| 초록 |
The need for optoelectronic and chemical compatibility between the layers in colloidal quantum dot (CQD) photovoltaic devices remains a bottleneck in further increasing performance. Conjugated polymers are promising candidates as new hole-transport layer (HTL) materials in CQDs solar cells (CQD-SCs) owing to highly tunable optoelectronic properties and compatible chemistries. We report a diketopyrrolopyrrole-based polymer with benzothiadiazole derivatives (PD2FCT-29DPP) as an HTL in these devices. The energy level, molecular orientation, and hole mobility of this HTL are manipulated through molecular engineering. By levering the polymer’s optical absorption spectrum complementary to that of the CQD active layer, we maximize EQE across the visible and near-infrared regions. |
