Molecular Alignment and Photovoltaic Properties of Liquid Crystalline Phthalocyanine Derivatives

Abstract

The molecular alignment characteristics have been investigated in 1,4,8,11,15,18,22,25- octaalkylphthalocyanine mesogen exhibiting a high carrier drift mobility in excess of 1 cm²/Vs. The coexistence of different molecular packing of C₆PcH₂ with different electronic states has been observed in a planarly aligned sandwich cell. The high-efficient photovoltaic cell based on the C₆PcH₂/PCBM bulk hetero-junction (BHJ) has been demonstrated. The sensitization of the EQE spectrum has been successfully realized upon doping C₆PcH₂ into polymer-based BHJ solar cell.