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Synthesis and optoelectronic properties of quaternary GaInAsSb alloy nanosheets

机译：季益达斯布合金纳米液的合成与光电性能

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Quasi-one-dimensional (1D) nanostructures have been extensively explored for electronic and optoelectronic devices on account of their unique morphologies and versatile physical properties. Here, we report the successful synthesis of GaInAsSb alloy nanosheets by a simple chemical vapor deposition method. The grown GaInAsSb alloy nanosheets are pure zinc-blende single crystals, which show nanosize-induced extraordinary optoelectronic properties as compared with bulk materials. mu-Raman spectra exhibit a multi-mode phonon vibration behavior with clear frequency shifts under varied laser power. Photoluminescence measurements reveal a strong light emission in the near-infrared region (1985 nm), and the obtained Varshni thermal coefficients a and beta are smaller than those of the bulk counterparts due to the size confinement effect. In addition, photodetectors (PDs) based on these single-alloy nanosheets were constructed for the first time. The PDs show a strong response in the near-infrared region with the external quantum efficiency of 8.05. x. 10(4)%, and the responsivity of 0.675. x. 10(3)AW(-1). These novel nanostructures would make contributions to the study of fundamental physical phenomena in quasi-1D nanomaterial systems and can be potential building blocks for optoelectronic and quantum devices.
机译：由于其独特的形态和多功能物理性质，已经广泛地探索了准一维（1D）纳米结构，用于电子和光电器件。在这里，我们通过简单的化学气相沉积方法报告成功合成GaInassb合金纳米片。生长的GaInassb合金纳米片是纯锌 - 混合物单晶，其与散装材料相比，纳米尺寸诱导的非凡光电性能。 MU-Raman光谱呈现多模式声子振动行为，随着激光功率的透明频率换档。光致发光测量揭示了近红外区域（1985nm）中的强光发射，并且所获得的Varshni热量系数a和β小于由于尺寸限制效果的散装对应物的发光。另外，基于这些单合金纳米片的光电探测器（PDS）首次构建。 PDS在近红外区域显示出强烈反应，外部量子效率为8.05。 X。 10（4）％，响应性为0.675。 X。 10（3）AW（-1）。这些新颖的纳米结构将对准1D纳米材料系统中的基本物理现象进行贡献，并且可以是用于光电和量子装置的潜在构建块。

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