Molecular n-doping of large- and small-diameter carbon nanotube field-effect transistors with tetrakis(tetramethylguanidino)benzene - Gotthardt, Jan M.; Schneider, Severin; Brohmann, Maximilian; Leingang, Simone; Sauter, Eric; Zharnikov, Michael; Himmel, Hans-Jörg; Zaumseil, Jana (ACS applied electronic materials, 2021)