Semiconductor has a property between conductor and insulator. The property is caused by the different structure of the p-type and n-type material in the semiconductor, which only allows the current to travel in one direction. Because of this special property, semiconductor is used to design many different devices. Solar panel is an important technology to reduce pollution to the environment, with the energy generated by sunlight, the demand to fossil fuels will decrease. Therefore, global warming and air pollution will be solved by this solar panel technology. Wafer is also an important technology. It is widely used in computer and smart phones to processing complex information, many communications technology have a large demand on wafer. LED is a lighting device; its color and brightness is depended on the structure and material of semiconductor. There are many challenges and limitations in recent semiconductor industry, including its low efficiency in different scenario and high cost in production. In future, the need to semiconductor will increase a lot, like the 5G station and electric cars. The limitations of semiconductor are very important to solve by design new structure and new materials. Semiconductor will largely change the development in future technology.
