N-Type semiconductors are materials that have been doped with impurities to increase the number of free electrons. This is typically achieved by adding elements from group V of the periodic table, such as phosphorus or arsenic, to a pure semiconductor like silicon. The extra electrons contribute to electrical conductivity, making N-Type semiconductors essential for various electronic devices. In N-Type semiconductors, the majority charge carriers are negatively charged electrons, while the minority carriers are holes (the absence of electrons). This unique property allows N-Type materials to be used in conjunction with P-Type semiconductors, forming PN junctions that are crucial for the operation of devices like diodes and transistors.