A solar cell is made of two types of semiconductors, called p-type and n-type silicon. The p-type silicon is produced by adding atoms—such as boron or gallium—that have one less electron in their ...

Their efforts led to the successful creation of a high-performance and highly stable p-type thin-film transistor (TFT). The research has been published online in Nature. Semiconductors are used in ...

But in the meantime, China has been able to manufacture the older, widely available types of semiconductors at a lower cost than their competitors. Biden officials worry that without restrictions ...