通过电子注入控制调节氧化物薄膜晶体管的值电压,使用p-n半导体异质连接结构
Jung Hoon Han1,2, Dong Yeob Shin3, Chihun Sung1
1Flexible Electronic Device Research Division, Electronics and Telecommunications Research Institute, 218, Yuseong-gu, Daejeon 34129, Korea.
ACS applied materials & interfaces
|June 10, 2024
概括
这项研究引入了一种使用 (Te) 和添加的氧化物 (Al:IZTO) 的新型异质连接结构,以精确控制薄膜晶体管 (TFT) 的值电压 (VT). 优化的设计证明了高级半导体应用的卓越稳定性和耐久性.
科学领域:
- 材料科学 材料科学 材料科学
- 半导体物理 半导体物理
- 设备工程 设备工程
背景情况:
- 氧化物薄膜晶体管 (TFT) 对于电子显示器和灵活的电子设备至关重要.
- 精确控制值电压 (VT) 对TFT性能和稳定性至关重要.
- 开发新的异质连接结构是提高TFT特征的关键.
研究的目的:
- 在氧化物TFT中设计和研究一种用于精确值电压 (VT) 调制的新型异质连接结构.
- 探索p型 (Te) 层与n型合的--锡氧化物 (Al:IZTO) 集成的p型 (Te) 层的影响.
- 为了评估在运行压力下制造的TFT的稳定性和耐用性.
主要方法:
- 氧化物TFT的制造具有由Te和Al:IZTO层组成的异质连接结构.
- 使用X射线光电子光谱 (XPS) 分析氧空位和能量波段结构.
- 调节Te层的厚度和沉积方法 (单/双),以优化性能.
- 进行积极偏差应力测试,以评估设备的稳定性.
主要成果:
- 通过调节Te异质连接层,实现了高达+20V的显著值电压 (VT) 转移.
- 在正偏向应力下表现出极好的稳定性 (+2 MV/cm10,000s),没有被动化.
- 证实了Al:IZTO/Te接口对VT控制和设备耐久性的影响.
- 展示了优化的TFT的强度,耐用性和稳定性.
结论:
- 集成的Te/Al:IZTO异质连接结构有效调节氧化物TFT的值电压 (VT).
- 优化的TFT表现出了显著的稳定性和耐久性,适合苛刻的应用.
- 这种方法为开发具有增强性能的定制半导体设备提供了一个有希望的途径.
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