Full bridge circuit based on pentacene schottky diodes fabricated on plastic substrates

Abstract

In this work, we demonstrate a full bridge diode (FBD) circuit compatible and fabricated on flexible polyethylene naphthalene (PEN) substrate. The fabrication was carried out using photolithography-based processes and pentacene Schottky diodes as the active circuit components. The individual pentacene diodes show the on/off current ratio of 10 5 , with reverse and forward bias current densities of 10 −4 and 10 2 A cm −2 , respectively. Diodes and the full bridge configuration were measured in the range of −10 to +10 V. Discrete diodes fabricated in the same substrate show similar behavior to those integrated in the FBD circuit. The frequency response was evaluated using an ac signal and voltage ranging from 1 to 5 MHz and −10 to +10V, respectively. The dc output voltage under these conditions was 7-8.5 V for individual diodes and 3-5.5 V for the FBD circuit. The resulting FBD circuits show full wave rectification for ac signals up to ±10 V in the frequency regime tested. The circuit demonstrated could be used for ac-related energy harvesting requiring rectification. One of such energy harvesting approaches could be power generated from micro-cantilevers.

Integrated molecular diode as 10 MHz half-wave rectifier based on an organic nanostructure heterojunction

“…Compared to previous works, as shown in Fig. 5d, we conclude that it is the first time that fully integrated rectifiers based on nanometer thin organic layers capable of working at high frequency have been achieved 4,8,14,[43][44][45][46][47][48][49][50] . The statistical analysis of the as-fabricated device array on chip is provided in Supplementary Fig.…”

Flexible diodes for radio frequency (RF) electronics: a materials perspective

“…Thus the authors demonstrated that the diodes could be realised on plastic foil and integrated without compromising the device performance. Gutierrez-Heredia et al [146] built full wave bridge rectifiers based on pentacene diodes and tested them in a frequency up to 5 MHz. However, they note that the individual diodes output a higher DC voltage than the bridge structures when integrated into rectifiers.…”