... Ans. The semiconductors which are doped with boron and have an affinity
to attract electrons are called p – type semiconductors.
The semiconductors which are doped with phosphorus and have
surplus of electrons are called n–type semiconductors. They have
an excess of electron and hence can donate ele ...
There are currently many research groups active in the field of photovoltaics in universities and research institutions around the world. This research can be divided into three areas: making current technology solar cells cheaper and/or more efficient to effectively compete with other energy sources; developing new technologies based on new solar cell architectural designs; and developing new materials to serve as more efficient energy converters from light energy into electric current or light absorbers and charge carriers.