An Ultrathin Organic Insulator for Metal–Insulator–Metal Diodes

The design and fabrication metal-insulator-metal (MIM) diodes using an ultrathin organic insulator are presented. The insulating layer was found to be compact, highly conformal, and uniform, effectively overcoming the main design challenge in MIM diodes. The diodes have strong nonlinear current-voltage characteristics with a typical zero-bias curvature coefficient of 5.4 V
^-1
and a voltage responsivity of 1.9 kV/W at a frequency of 1 GHz. The fabrication of the diodes only requires only low-temperature processing, which is cost effective, and can potentially be ported to large-area roll-to-roll manufacturing.