Chattopadhyay, Shirsopratim;
Labram, John G;
(2022)
The effect of substrate curvature on capacitance and transfer characteristics for thin film transistors on the surface of spheres.
Journal of Applied Physics
, 132
(17)
, Article 174502. 10.1063/5.0118236.
Preview |
Text
5.0118236.pdf - Published Version Download (1MB) | Preview |
Abstract
Conformable, flexible, and stretchable thin film transistors hold promise for ubiquitous and low-cost electronics. As part of the research endeavor toward this goal, the challenges associated with compatible materials and growth processes have been intensely studied. What is seldom considered, however, is how device electrostatics change as the physical form of devices change. In this report, we study how one would expect the current–voltage characteristics of thin film transistors to change as they are deformed on the surface of a sphere. We derive analogous equations to those derived in the gradual channel approximation to relate current to applied voltage for various spherical geometries. Combined with a finite-difference strategy to evaluate geometric capacitance, example current–voltage characteristics are calculated. The results demonstrate for certain deformations in this geometry, the behavior deviates from what one would expect using just the gradual channel approximation. For flexible electronics to be commercially viable, it must be predictable in any physical form. These results represent some of the first steps in a broader effort to quantify the relationship between device geometry and electrical behavior.
| Type: | Article |
|---|---|
| Title: | The effect of substrate curvature on capacitance and transfer characteristics for thin film transistors on the surface of spheres |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1063/5.0118236 |
| Publisher version: | https://doi.org/10.1063/5.0118236 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third-party material in this article are included in the Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10159800 |
Loading...
Loading...Loading...Loading...Archive Staff Only
 |
View Item |
