Electrical conductivity and seebeck voltage of fe2o3, pure. Junctions between n type semiconductors of different electron affinity show rectification if the junction is sufficiently abrupt. Properties of the organiconinorganic semiconductor. Metalsemiconductor ohmic contacts stanford university. N type dopants have higher solid solubility than p type dopants as p sb sn ga al solid solubility atoms cm b3 1022 1020 1021 1019 temperature. In other words, electron donor impurities create states near the conduction band while electron acceptor impurities create states near the valence band. The energy of the valenceband maximum vbm was set to zero. Pdf physique des composants semiconducteurs researchgate. A slice cut from the specimen at the p n boundary developed a voltage when exposed to light. Inp gaas n n junctions were fabricated with an epitaxial vaporgrowth method. The electrical conductivity and seebeck voltage were measured on 99. Cours master phys sc chap 4 2015 linkedin slideshare. These expressions can be combined with the recognition that ni pito yield n2 i. Doping a semiconductor in a good crystal introduces allowed energy states within the band gap, but very close to the energy band that corresponds to the dopant type.
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