Assignment First

作业代写:使用硅作为光学介质的优点和缺点是什么?

首先,硅是地球上第二丰富的元素(最丰富的物质是氧),它可以广泛地从自然中获得。它的氧化物- SiO2在技术上很容易加工。因此,硅的成本低于其他材料(Bowers, 2015)。

作业代写:使用硅作为光学介质的优点和缺点是什么?

其次,这可以与另一种重要的半导体材料锗相比较。硅的带隙(1.11 eV)大于锗(0.67 eV)。在1.1 eV左右的带隙中,硅的波长在1.3到1.6之间是透明的,这是光传输中常用的波长。

导热系数大,硬度高,密度低。因此,对于互补金属氧化物半导体(CMOS)加工技术,硅光子学是适用于低成本大规模生产的领域(Vulliet, 2015)。它具有高折射率,对红外光透明。立方晶体结构的硅可用于制造纯度极高的晶圆。

作业代写:使用硅作为光学介质的优点和缺点是什么?

Firstly, silicon is the second most abundant elements on Earth (the most abundant material is Oxygen) and it can be widely encountered from natural. Its oxide – SiO2 is very easy to process technically. Therefore, the cost of silicon is lower than other material (Bowers, 2015).

作业代写:使用硅作为光学介质的优点和缺点是什么?

Secondly, this can be compared with another important semiconductor material – Germanium (Ge). Silicon has a larger band gap (1.11 eV) than germanium (0.67 eV). With a band gap around 1.1 eV, silicon is transparent to the wavelengths around 1.3 to 1.6 which are the wavelengths commonly used in optical transport.
It has a large thermal conductivity, hardness and low density. Therefore, for complementary metal–oxide semiconductor (CMOS) processing techniques, silicon photonics is the field that is applicable for low-cost mass production (Vulliet, 2015).It has a high refractive index which is transparent to infrared light. Silicon with cubic crystal structure can be used to make wafers with excellent purity.