Mixed-Signal Organic Integrated Circuits in a Fully Photolithographic Dual Threshold Voltage Technology

作者：Nausieda Ivan^*; Ryu Kevin Kyungbum; Da He David; Akinwande Akintunde Ibitayo; Bulovic Vladimir; Sodini Charles G

来源：IEEE Transactions on Electron Devices, 2011, 58(3): 865-873.

DOI：10.1109/TED.2011.2105489

• Comparators
• digital integrated circuits
• inverters
• mixed analog-digital integrated circuits
• operational amplifiers (op-amps)
• organic compounds
• thin-film transistors (TFTs)

Analog & digital circuits implemented in a dual threshold voltage (V-T) p-channel organic technology are presented. The dual V-T organic technology is compatible with large-area and mechanically flexible substrates due to its low processing temperature (<= 95 degrees C) and scalable patterning techniques. We demonstrate the first analog & digital organic integrated circuits produced by a dual-gate metal process. The analog circuits are powered by a 5-V supply and include a differential amplifier and a two-stage uncompensated operational amplifier (op-amp). A dynamic comparator is measured to have an input offset voltage of 200 mV and latching time of 119 ms. Both the comparator and the op-amp dissipate 5 nW or less. Area-minimized digital logic is presented. Inverters powered by a 3-V supply were measured to have positive noise margins and consumed picowatts of power. An 11-stage ring oscillator, also powered by a 3-V supply, swings near rail to rail at 1.7 Hz. These results demonstrate dual threshold voltage process feasibility for large-area flexible mixed-signal organic integrated circuits.

• 出版日期2011-3