黑色-合金的量化中红外光发光特性
Shu Wang1,2,3, Naoki Higashitarumizu2,3,4, Bengisu Sari1,2,5
1Department of Materials Science and Engineering, University of California, Berkeley, California 94720, United States.
ACS nano
|February 9, 2024
概括
黑色-合金使中红外光电子成为可能. 合金扩展了操作波长,但的度增加降低了辐射效率,需要光腔增强以提高量子产量.
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.
- 凝聚物质物理学 凝聚物质物理学
背景情况:
- 黑 (bP) 是中红外 (中红外) 光电学的关键材料.
- 将bP与 (As) 合金,将操作波长调整到更长的中红外范围.
- 黑- (bPAs) 合金提供可调节的光电子特性.
研究的目的:
- 为了定量表征bPAs合金的光电子质量.
- 为了确定As度和光学特性之间的关系.
- 探索用于设备应用的bPA合金中增强量子产量的方法.
主要方法:
- 使用近至中红外光谱 (0.20.9 eV) 的反射测量,提取了异型光学常量 (折射率,灭绝系数,吸收系数).
- 对bPAs合金进行了定量光发光度 (PL) 测量,其As度从室温下降到77K,各不相同.
- 测量了PL量子收益率以评估辐射效率,并为bP3As7设计了一个光学腔,以利用Purcell效应.
主要成果:
- 确定了bPAs合金的异型光学常数,这对于光学设备设计至关重要.
- 光发光量子产量随着As度的增加而下降了两个数量级.
- 一个光学腔设计证明了bP3As7.7的量子产量增加了十倍.
结论:
- 对bPAs合金的全面光学表征为中红外设备开发提供了必不可少的数据.
- 调整 由于度会影响辐射效率,因此需要像光腔这样的优化策略.
- bPAs合金对高性能中红外光电器件具有前景,具有进一步的优化潜力.
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