在高增益和超低功率下工作的打印下值有机晶体管
Chen Jiang1,2, Hyung Woo Choi1, Xiang Cheng1,3
1Electrical Engineering Division, Department of Engineering, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA, UK.
概括
研究人员开发了一种高收益的喷墨印刷有机晶体管放大器, 这种超低功率的设备实现了近乎理论的放大效率, 克服了可穿戴电子设备的关键挑战.
科学领域:
- 有机电子产品
- 半导体设备物理
- 生物集成电子产品
背景情况:
- 穿戴式电子设备面临着平衡功耗,制造成本和信号放大方面的挑战.
- 现有的解决方案往往涉及限制性能和适用性的权衡.
研究的目的:
- 报告一个高收益,完全喷墨打印的Schottky屏障有机薄膜晶体管放大器电路.
- 解决目前可穿戴电子系统的局限性.
主要方法:
- 使用喷墨印刷制造有机薄膜晶体管 (OTFT).
- 在源电极上加入Schottky屏障.
- 晶体管的电特性和放大器电路性能.
主要成果:
- 达到了每安培38.2西门的信号放大效率,
- 已证明的超低功耗低于1纳瓦.
- 由于Schottky屏障,具有独立于几何的电气特性,可以适应喷墨打印的变化.
- 显示出良好的可靠性与微不足道的门电压转移.
- 成功实现了用于电生理信号检测的信号噪声比>60dB和低噪声电压的放大器 (<0.3μV/√Hz在100Hz).
结论:
- 开发的Schottky屏障有机薄膜晶体管放大器为可穿戴电子产品的超低功率,高增益应用提供了有希望的解决方案.
- 喷墨打印可以实现高性能的高性价比制造,克服以前的局限性.
- 该设备的可靠性和性能指标适用于敏感的电生理信号检测.
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