Ambipolar charge transport in non-peripherally substituted octahexyl zinc phthalocyanineNandu B. Chaure, Seema Barard, Asim K. Ray, Andrew N. Cammidge and Michael J. CookEPL, 104 5 (2013) 57005DOI: https://doi.org/10.1209/0295-5075/104/57005