Schulz, Kai MarvinKai MarvinSchulzProrok, StefanStefanProrokJalas, DirkDirkJalasMarder, Seth R.Seth R.MarderLuo, JingdongJingdongLuoJen, Alex K.-Y.Alex K.-Y.JenZierold, RobertRobertZieroldNielsch, KorneliusKorneliusNielschEich, ManfredManfredEich2020-09-152020-09-152015-07-01Optical Materials Express 8 (5): 1653-1660 (2015)http://hdl.handle.net/11420/7318We use a modified Teng-Man technique to investigate the poling induced electro-optic activity of chromophore-doped organic polymers poled on silicon substrate in a thin film sample configuration. We reveal a fundamental difference between the poling processes on silicon substrate and ITO substrate. The electro-optic activity for polymers poled on silicon substrate is reduced which we ascribe to space charge formation at the silicon - organic interface that distorts the field distribution in the polymer film during high field poling, and therefore limits the effective induced polar order. We demonstrate that the electro-optic activity on silicon substrate can be improved by inserting a 5 nm thin dielectric layer of Al2O3q between the silicon substrate and the polymer which reduces the leakthrough current during poling, thereby allowing for higher applicable poling voltages.en2159-39302015816531660OSATechnikJournal Article10.1364/OME.5.001653Other