| 초록 |
Polymer solar cells (PSCs) with a conductivity-enhanced by doping with eitherdimethylsulfoxide (DMSO) was successfully fabricated to increase the photon harvesting property through localized surface plasmon resonance(LSPR) by adding Ag nanoparticles to PEDOT:PSS, a hole collection layer, and effectively separating the generated charges. At Ag nanoparticle and DMSO doping concentrations of 10 wt% and 3 wt%, respectively, the characteristics of the PSCs were optimized with a short-circuit current density (Jsc), open-circuit voltage (Voc), fill factor (FF) and estimated power conversion efficiency (PCE) of 8.0 mA/cm2, 0.595 V, 57.8%, and 2.6%, respectively. Compared to the device with a buffer layer of conventional PEDOT:PSS, PCE was improved by ca. 85%. The series resistance (Rs), shunt resistance (Rsh), and hole mobility were 18 Ωcm2, 673 Ω cm2 and 4.2 cm2/Vs, respectively. |
