Prior to this work, quantum - wells were incorporated near the collector in the base of a III - V heterojunction bipolar transistor, resulting in a heavily reduced radiative spontaneous recombination lifetime of the device. (sciencedaily.com)
In electronics, joining different materials produces heterojunctions — the most fundamental components in solar cells, LEDs or computer chips. (sciencedaily.com)
Tandem solar cells, in which two solar cells with different absorption characteristics are linked to use a wider range of the solar spectrum, were fabricated with each layer processed from solution with the use of bulk heterojunction materials comprising semiconducting polymers and fullerene derivatives. (science.sciencemag.org)