Photocarrier mobility in poly(2-methoxyaniline)

Abstract

In the current study the mobility of photogenerated charge carriers in PMA [poly(2-methoxyaniline)] and their transport were investigated using time-of-flight (TOF) techniques. Also studied was the effect on hole mobility of film thickness and of the method of polymer processing during device fabrication. The highest value of hole mobility found was 4.5×10-4 cm2 V-1 s-1 at an applied field of 1.3×106 V/cm and 293 K in solution-cast film of PMA. The hole mobility of solution-cast films was about 2 orders of magnitude higher compared to spin-coated films, for which the ordering of the polymer chains may be the reason. To our knowledge, this is the first time the TOF mobility of this material has been presented.