Sheet-Type Flexible Organic Active Matrix Amplifier System Using Pseudo-CMOS Circuits With Floating-Gate Structure
Sheet-Type Flexible Organic Active Matrix Amplifier System Using Pseudo-CMOS Circuits With Floating-Gate Structure
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DOI：
10.1109/ted.2012.2220853
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发表时间：
2012-12-01
影响因子：
3.1
通讯作者：
Someya, Takao
中科院分区：
文献类型：
--
作者：
Yokota, Tomoyuki;Sekitani, Tsuyoshi;Someya, Takao
我们成功地制作了一个基于二维有机自偏置反馈放大器阵列的大面积柔性应变传感系统，其信号增益为400。该放大系统由三层组成：自组装单分子层(SAM)电容矩阵、采用SAM栅介质的浮栅结构的二维有机伪CMOS型反相器阵列和有机薄膜晶体管的有源矩阵。放大器片由8×8放大单元组成，有效尺寸为7×7厘米(2)。有机晶体管的迁移率为1.7 cm(2)/V。S在2V工作电压下处于饱和状态。应变传感器是由聚合物压电片制成的。当PVDF薄片的一个单元被触摸时(即，当施加机械压力时)，PVDF中的分子间极化产生一个小信号。这些信号由有机放大电路放大，范围从10 mV到150 mV。
We successfully fabricated a large-area flexible strain-sensing system based on a 2-D array of organic self-bias-feedback amplifier with a signal gain of 400. The amplifier system consists of three layers: a self-assembled monolayer (SAM) capacitor matrix, a 2-D array of organic pseudo-CMOS inverters with a floating-gate structure using SAM gate dielectric, and an active matrix of organic thin-film transistors. The amplifier sheet comprises 8 x 8 amplifier cells, with an effective size of 7 x 7 cm(2). The organic transistors exhibit a mobility of 1.7 cm(2)/V . s in the saturation regime at an operation voltage of 2 V. A strain sensor is made of a polymeric piezoelectric [polyvinylidene difluoride (PVDF)] sheet. When a cell of the PVDF sheet is touched (that is, when mechanical pressure is applied), a small signal is generated by intermolecular polarization in the PVDF. These signals are amplified by the organic amplifier circuits from 10 to 150 mV.