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Microsecond Response in Organic Electrochemical Transistors: Exceeding the Ionic Speed Limit
Jacob T Friedlein1, Mary J Donahue2, Sean E Shaheen1,3
1Department of Electrical, Computer and Energy Engineering, University of Colorado, Campus box 425, Boulder, CO, 80309-0425, USA.
Advanced Materials (Deerfield Beach, Fla.)
|July 27, 2016
Summary
Organic electrochemical transistors (OECTs) achieve faster response times by operating in a high-speed bias regime. This method significantly overcomes the typical ion transport limitations, improving device speed by 30 times.
Area of Science:
- Materials Science
- Electronics
- Electrochemistry
Background:
- Organic electrochemical transistors (OECTs) offer high extrinsic transconductances up to 400 S m-1.
- Their performance is typically limited by slow ion transport, resulting in response times of 1 ms or longer.
Purpose of the Study:
- To investigate methods for enhancing the response speed of OECTs.
- To determine if OECTs can overcome ion transport limitations for faster operation.
Main Methods:
- Operating OECTs in a specifically designed high-speed bias regime.
- Characterizing the response times and transconductances under the new operating conditions.
Main Results:
- OECTs demonstrated response speeds significantly exceeding the typical ionic response speed.
- The observed speed enhancement was up to a factor of 30 compared to conventional operation.
Conclusions:
- A high-speed bias regime can dramatically improve OECT response times.
- This approach effectively mitigates the ion transport bottleneck, enabling faster electronic devices.
Keywords:
biosensinghigh-speedorganic electrochemical transistorsorganic electronicspoly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)More Related Videos
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