| 초록 |
Various pollution free energy is being studied. Solar energies are endless energy sources and have the advantage of not generating additional environmental pollution byproducts. Organic solar cells have advantage that can be worked in a liquid state, making it easy to mass-produce and making it possible to produce at a low price. As a study of the active layers of organic solar cells, Donor synthesized into the alternating structure of push units and full units. Between push units and full units inserted π-bridge and investigated how this π-bridge affects organic solar cells by adjusting the location and number of bridge widely used as π-bridge. Three type of polymer donor were synthesised. One is PBDT-FPz, other is PBDT-T-FPz, the other PBDT-DT-FPz. HOMO decreased as thiophene bridge increased. As a result, PBDT-DT-FPz showed the best performance that 5.117mA/cm^2 of Jsc, 0.592V of Voc and 1.664 of PCE |
