The effect of substrate curvature on capacitance and current–voltage characteristics in thin-film transistors on flexible substrates
The effect of substrate curvature on capacitance and current–voltage characteristics in thin-film transistors on flexible substrates
复制标题
基板曲率对柔性基板上薄膜晶体管电容和电流电压特性的影响
DOI：
10.1088/2515-7639/abe7c5
复制
发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Labram, John G.
中科院分区：
文献类型：
--
作者：
Chattopadhyay, Shirsopratim;Labram, John G.
机械柔性电子器件是设计用于在显著的物理变形（例如弯曲、扭曲和拉伸）下操作的设备。虽然与柔性衬底兼容的材料系统和器件已被广泛研究，但分析的数学框架与传统的平面硅基电子器件相同。然而，柔性电子器件所需的非平面和动态形状因子使这些模型中的假设失效。为了使电子设备具有可预测性并最终在商业上可行，必须以任何物理形式来理解它们。这里我们采用矩量法来计算任意形状的两个电导体之间的电容。结合圆柱表面上薄膜晶体管（TFT）的源漏电流模型，我们能够计算弯曲TFT的电流-电压特性作为弯曲角度的函数。我们演示了如何变形设备的几何形状，预计将导致不可忽略的电流-电压特性的变化。这项工作代表了迈向一个新框架的第一步，该框架用于理解和表征具有任何物理形状因子的电子产品，最终使柔性电子产品更接近商业可行性。
Mechanically flexible electronics are devices designed to operate under significant physical deformations such as bending, twisting, and stretching. While the materials systems and devices compatible with flexible substrates have been extensively studied, the mathematical framework for analysis remains identical to that of traditional planar silicon-based electronics. However, the non-planar and dynamic form factors desired from flexible electronics invalidate assumptions made in these models. For electronic devices to be predictable and ultimately commercially viable, they must be understood in any physical form. Here we employ the method of moments to calculate the capacitance between two electrical conductors of arbitrary shape. Combined with a model for source–drain current in thin-film transistors (TFTs) on the surface of a cylinder, we are able to calculate the current–voltage characteristics in curved TFTs as a function of bending angle. We demonstrate how deformations to device geometry are expected to lead to non-negligible changes in current–voltage characteristics. This work represents the first step towards a new framework for understanding and characterizing electronics with any physical form factor, ultimately bringing flexible electronics closer to commercial viability.
影响因子：
6.4
作者：
Veronica G. Reynolds;Saejin Oh;Renxuan Xie;M. Chabinyc
通讯作者：
M. Chabinyc
影响因子：
13.6
作者：
Kwon SM;Won JK;Jo JW;Kim J;Kim HJ;Kwon HI;Kim J;Ahn S;Kim YH;Lee MJ;Lee HI;Marks TJ;Kim MG;Park SK
通讯作者：
Park SK
在柔性塑料基材上高速印刷低压聚电解质门控聚合物场效应晶体管凹版印刷
影响因子：
6.2
作者：
Quentin Thiburce;A. Campbell
通讯作者：
A. Campbell