Printable rectifying device using si-composite

The R&D in finding low-cost manufacturing of electronics and electronic components is intense. One research route is aiming at roll-to-roll printing of organic electronics but the typically low mobility in organic semiconductors results in fundamental difficulties to fabricate, e.g., diodes for operation at high frequencies. A novel diode has instead been realised by screen-printing a silicon-powder composite with the intention to utilise the high mobility and the high operation frequency potential of silicon. The current against voltage (I-V) characteristics of the printed device reveal diode behaviour but so far with a too high ideality factor and resistance to be practically useful. By optimising device geometry, composite, and printing process low-cost printed, high frequency diodes (MHz-some GHz) may be viable.