Percolation dominated electron transport in Tetracyanoquinodimethane mixed 4,7-diphenyl-1,10-phenanthroline thin films

► TCNQ mixed BPhen films exhibit enhanced conductivity. ► Conductivity transition of TCNQ mixed BPhen is governed by the percolation concept. ► Mixed films exhibit stable morphology with time compared to the pristine film of BPhen.