Local electrical properties of PTB7 film

Abstract

Abstract A study of the spreading of currents and current-voltage characteristics in a pure PTB7 thin film by atomic force microscopy (AFM) technique was carried out in order to investigate the processes of transport of positive charge carriers in the nanoscale range. It was showed that the numerical values of the carrier mobility can significantly differ on the nanoscale and require correct interpretation of processes with the scale that are comparable with the morphological features of organic solar cells.