From Event: SPIE Organic Photonics + Electronics, 2016
In electronic systems, components often require different supply voltage for operation. In order to meet this requirement and to optimize power consumption for flexible electronics, we demonstrate a pulsed voltage multiplier that boosts the voltage at specific circuit nodes above the supply voltage. A five-stage pulsed voltage multiplier is shown to provide an output voltage up to 18 V from a supply voltage of 10 V, with minimum 10 ms pulse rise time for a 70 pF load.
A key requirement for the pulsed voltage multiplier circuit is low device leakage to boost the output voltage level. To minimize leakage, the composition of the organic semiconducting layer is modified by blending an insulating polymer with the small molecule semiconductor. This modification allows control over the transistor turn-on voltage, which enables low leakage current required for operation of the circuits. The printed multiplier allows a single power source to deliver multiple voltage levels and enables integration of lower voltage logic with components that require higher operating voltage, for example, in the case of recording data into memory cells in sensor tags.
Tse Nga Ng, Ping Mei, David E. Schwartz, Janos Veres, Per Broms, and Christer Karlsson, "Meeting power requirements for organic printed sensor tags
(Conference Presentation)," Proc. SPIE 9943, Organic Field-Effect Transistors XV, 994306 (Presented at SPIE Organic Photonics + Electronics: August 29, 2016; Published: 2 November 2016); https://doi.org/10.1117/12.2236526.5168997892001.
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