Formation of ohmic contacts for both holes and electrons to organic semiconductor films

Suemori, Kouji; Yokoyama, Masaaki; Hiramoto, Masahiro
April 2005
Applied Physics Letters;4/25/2005, Vol. 86 Issue 17, p173505
Academic Journal
Ohmic contacts for both holes and electrons were formed on naphthalene tetracarboxylic anhydride films at platinum-doped p-type film/metal and sodium-doped n-type film/metal junctions, respectively. The injection current density reached 4 A cm-2 at a low bias field of 6×104 V cm-1. Platinum was revealed to be a candidate for a permanent dopant that can act as an electron acceptor in the formation of p-type organic semiconductors.


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