Abstract
To enable the integration of components with different supply voltage requirements, and to optimize power consumption in printed flexible electronics, we demonstrate an inkjet-printed 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. This circuit allows a single power source to deliver multiple voltage levels and enables integration of low-voltage logic with components that require higher operating voltage. A key requirement for the pulsed voltage multiplier circuit is low device leakage to boost the output voltage level. To this end, the composition of the transistor 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 circuit.
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