Abstract
Resistors are essential and ubiquitous building blocks in electronic circuits. Fabrication of printed resistors in a manner compatible with roll-to-roll printing is important for realizing low-cost and high-throughput production of electronic devices. Here we present fully printed resistors fabricated via a novel self-aligned printing method, termed self-aligned capillarity-assisted lithography for electronics (SCALE). Flexible substrates with imprinted features such as reservoirs and capillary channels were prepared by roll-to-roll processing. Functional inks were then delivered sequentially into the reservoirs by inkjet printing and the ink flowed spontaneously into the adjoining channels driven by capillarity. Poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) was used as the resistive material, and silver was used for the electrodes. Using SCALE, we achieved fully inkjet-printed, self-aligned resistors with resistance values ranging over five orders of magnitude while keeping the overall dimensions of the devices constant. We then employed SCALE to build low-pass resistor-capacitor filters with cutoff frequency from 0.4 to 27 kHz and excellent operational stability. Overall, this work expands the potential of self-aligned inkjet printing for producing fully printed electronic circuits.
Original language | English |
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Article number | 045003 |
Journal | Flexible and Printed Electronics |
Volume | 3 |
Issue number | 4 |
DOIs | |
State | Published - Dec 2018 |
Externally published | Yes |
Keywords
- PEDOT:PSS
- RC filter
- flexible electronics
- inkjet printing
- resistors