Why are transmittance and absorbance inversely proportional and relationship between conductivity mobility and carrier concentration of a semiconductor?
Dear friend Rk Naresh
Let's delve into the captivating world of semiconductor physics, shall we? Transmittance and absorbance are intricately connected. Light can be either transmitted or absorbed when passing through a material. These actions are inversely related, like a seesaw.
Now, let's talk about conductivity, mobility, and carrier concentration in semiconductors. Picture a bustling city street. Conductivity is akin to the flow of cars, while mobility is the speed limit. Carrier concentration illustrates the number of cars (carriers) on the road.
Conductivity is directly tied to both mobility and carrier concentration. Increasing either mobility or carrier concentration enhances conductivity, similar to more cars speeding down a street resulting in heavier traffic. The relationship between mobility and carrier concentration is not always straightforward. Sometimes, increasing carrier concentration can decrease mobility, and vice versa. Like maneuvering through a crowded street: more people may slow you down, but efficient movement can still lead to high conductivity.
Overall, a semiconductor's conductivity relies on the balance between mobility and carrier concentration, similar to traffic flow depending on both car number and speed. Understanding these connections is crucial for developing and fine-tuning semiconductor devices for various applications.