| 초록 |
Hybrid solar cells (HSCs) with a solid-state hole transporting layer composed of an aromatic amine and ionic liquid were fabricated, and their photovoltaic properties were examined. When a mixture of poly(3,4-ethylenedioxythiophene):polystyrene sulfonate and graphene was spin-coated on the working electrode, a solid-state HSC showed a power conversion efficiency (PCE) of 0.704%, resulting from 2.350 mA/cm2 of the short-circuit current (Jsc), 0.554 V of the open-circuit voltage (Voc) and 54.08% of fill factor (FF). On the other hand, a reference device without graphene recorded a photovoltaic performance of 1.351 mA/cm2 for the Jsc, 0.548 V for the Voc, and 65.75% for the FF, which led to a PCE of 0.487%. |
