A search for guiding principles for preparing novel organic semiconductors with electrical amphotericity and polarity combined

点击翻译按钮获取中文摘要

A zwitterionic molecule crystallizing in keeping its dipole moment in the same direction turns out to suffer the effects of molecular orientation control in its thin films evaporated on oxidized silicon substrates by means of surface modification by self-assembled monolayers and/or water vapor exposure after formed. An amphoteric molecule having both donor and acceptor parts also shows similar effects. These results are useful to extend the electronic properties of organic semiconductors. Further, we fabricate an organic semiconductor deviceexhibiting a diode behavior with its polarity and magnitude depending on the measurement history. These findings provide us with guidelines for the creation of novel organic semiconductors basedon a specific charge distribution and/or polarity of a particular molecule.