在宽带间隙半导体 SrSnO 中的杂质水平诱导的宽带光电反应3
Yuyang Zhang1,2, Lisheng Wang1,3, Weijie Wu2,4
1School of Physics, Sun Yat-sen University, Guangzhou 510275, China.
ACS applied materials & interfaces
|August 17, 2024
概括
研究人员开发了一种使用杂质水平SrSnO3.3的宽带光电探测器. 这种具有成本效益的材料在紫外线和可见光谱中提供高光响应性,克服了当前探测器的局限性.
科学领域:
- 材料科学 材料科学 材料科学
- 光电学是指光电子产品.
- 固态物理 固态物理
背景情况:
- 宽带频谱探测器对于诸如多光谱成像和光通信等应用至关重要.
- 当前的挑战包括材料不稳定性,复杂的制造和高成本,限制了广泛采用.
- 斯特酸 (SrSnO3) 显示了光电子设备的潜力.
研究的目的:
- 开发一种使用SrSnO3.3杂质水平修改的宽带光谱检测方法.
- 研究开发的光探测器的光响应特征和潜在机制.
- 评估基于SrSnO3的光电探测器的稳定性和强度.
主要方法:
- 在SrSnO3薄膜中的杂质级工程.
- 基于改性 SrSnO3.3 的光电探测器的制造.
- 在广泛的光谱范围 (275 nm 到 700 nm) 中对光响应性的表征.
- 运输和光发光度测量以了解操作机制.
- 在重复使用和暴露在空气中的稳定性测试.
主要成果:
- 达到高光响应度:在275nm (UV-C) 和367nm (UV-A) 时超过500mA/W,在532nm (可见) 和700nm (可见) 时达到~60mA/W.
- 确定了88K的相位过渡,影响La-doped SrSnO3中的杂质水平,这对宽带响应至关重要.
- 在长时间的测试中,在空气中表现出极好的强度和稳定性.
结论:
- 经杂质含量修改的SrSnO3是高性能宽带光学探测器的一个有前途的材料.
- 开发的方法为低成本,简单结构和高效的光电探测器提供了一条途径.
- 这些发现为先进的光学传感和通信技术开辟了新的可能性.
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