带量身定制使得X射线到近红外光检测的矿器件成为可能
Yi-Chu He1, Guan-Hua Dun1, Jun Deng2
1School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing, 100084, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|January 14, 2025
概括
这项研究引入了一种新的矿异质连接,用于广谱光检测. 该设计能够同时进行红外和X射线检测,提高灵敏度和降低噪音.
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
- 光电学是指光电子产品.
背景情况:
- 矿半导体具有优良的光检测性能,如低有效载体质量和长载体寿命.
- 由于材料要求相互矛盾,目前的矿光探测器面临着在广泛光谱 (X射线到红外) 中实现平衡检测的挑战.
研究的目的:
- 设计一个单一的矿光探测器,能够从X射线到红外射线进行广谱探测.
- 通过解决不同波长范围的相互矛盾要求,克服当前矿光探测器的局限性.
主要方法:
- 设计了一种基于矿的II型FAPbI3异质连接,使用狭窄带隙 (Te) 半导体进行大能量带偏移.
- 采用第一原则计算来确认II型带结构对齐.
- 制造了一个可扩展的40x1传感器阵列.
主要成果:
- 这种新型异质连接成功地将检测范围扩展到红外频谱,并减少暗电流噪声.
- 在1550nm的距离下,获得了6.8×10^9斯的探测度,用于近红外探测.
- 已证明高X射线灵敏度高达1885.1μC Gy−1 cm−2.2. 这种X射线灵敏度高达1885.1μC Gy−1 cm−2.2.
- 确认了自我驱动的响应行为.
结论:
- 开发的矿异质连接可实现高效的广谱光检测.
- 可扩展的传感器阵列显示了先进的宽频成像应用的潜力.
- 这项工作为下一代基于矿的光电子设备铺平了道路.
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