| 초록 |
The charge transfers of each interface layer in polymer solar cells such as between blend of poly (3-hexylthiophene) (P3HT) and [6,6]-phenyl C61-butyric acid methyl ester (PCBM) as an active layer, Poly (3,4-ethylenedioxythiophene):poly (styrenesulfonic) acid (PEDOT:PSS) as an anode side buffer layer, indium-tin-oxide (ITO) as an anode electrode, and aluminium as a cathode electrode have been analyzed under the dark condition and illumination (100mWcm-2) by means of impedance spectroscopy. Impedance measurements show that charge transfer at the interface between PEDOT:PSS and ITO have been observed at high frequency and, several charge transfer resistance were investigated such as between P3HT and PCBM interface, and PEDOT:PSS and active layer at the low frequency. The method based on the IS is available to probe the electron transfer in the bulk heterojunction polymer solar cells. |
