Photonic curing of solution-deposited ZrO2 dielectric on PEN: a path towards high-throughput processing of oxide electronics
Source abstract
Abstract
Abstract High-throughput manufacturing of oxide electronics will enable new applications ranging from large-area displays to flexible medical devices and low-cost solar panels. However, high-quality oxide films from solution-based precursors typically require 20 min or more of thermal annealing at high temperature (>250 °C) for each layer, severely limiting both the throughput and substrate choice. Here, we report high-speed photonic curing of ZrO2dielectric thin films on flexible plastic substrates. The curing and patterning processes can be achieved simultaneously by using shadow mask patterning or adjusting conditions to convert oxide only on top of underlying metal contacts, i.e. self-aligned patterning. Metal–insulator–metal capacitors using two layers of ZrO2films photonically cured in just 100 s per layer show non-dispersive capacitance–frequency behaviour from 102to 106 Hz, high areal capacitance of 200 nF/cm2and low dissipation factor of 0.03 at 105 Hz, leakage current density of ~10−7 A/cm2at an applied field of 2 MV/cm, and a breakdown field of nearly 8 MV/cm. Using an upgraded tool, similar dielectric properties are achieved in as short as 100 ms using a single pulse of light, revealing a pathway to oxide film processing beyond 30 m/min.
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Research context
OpenAlex topics: Semiconductor materials and devices · Thin-Film Transistor Technologies · ZnO doping and properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (53)
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