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Schottky barrier photodetector utilizing tungsten grating nanostructure
Journal of Nanophotonics ( IF 1.5 ) Pub Date : 2020-10-01 , DOI: 10.1117/1.jnp.14.046002
Ankit Kumar Pandey, Anuj Kumar Sharma

Schottky barrier photodetector (PD) (tungsten/nickel/aluminum nitride) based on stacked tungsten gratings is reported in our work. The absorbance of the grating-based structure is obtained using rigorous coupled-wave analysis method. In addition, a responsivity value of 6.164 mA / W is calculated at λ = 559.38 nm based on Fowler’s model. More than three times enhancement in responsivity is achieved as compared with that of bulk structure (without grating) based Schottky barrier PD. In addition, a detectivity value of 33.11 × 1011 cm Hz1/2 / W is obtained. Furthermore, the effect of grating variables and incident angle on responsivity are also demonstrated. In future, the proposed structure can also be used as a plasmonic sensor, absorber, or spectral filter.

中文翻译:

利用钨光栅纳米结构的肖特基势垒光电探测器

我们的工作报道了基于堆叠钨光栅的肖特基势垒光电探测器(PD)(钨/镍/氮化铝)。使用严格的耦合波分析方法获得基于光栅的结构的吸光度。此外,根据福勒模型,在λ= 559.38 nm处计算出的响应度值为6.164 mA /W。与基于块状结构(无光栅)的肖特基势垒PD相比,响应度提高了三倍以上。另外,获得了33.11×1011cm Hz1 / 2 / W的探测值。此外,还证明了光栅变量和入射角对响应度的影响。将来,所提出的结构还可以用作等离子体传感器,吸收器或光谱滤波器。
更新日期:2020-10-19
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