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Optical Properties of Undoped and V‐Doped V A −VI A −VII A Single Crystals
Author(s) -
Park SangAn,
Kim MiYang,
Lim JiYoung,
Park ByongSeo,
Koh JeongDae,
Kim WhaTek
Publication year - 1995
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221870124
Subject(s) - orthorhombic crystal system , vanadium , impurity , doping , analytical chemistry (journal) , band gap , materials science , crystallography , absorption (acoustics) , chemistry , atomic physics , crystal structure , inorganic chemistry , physics , optoelectronics , organic chemistry , chromatography , composite material
SbSI:V, SbSeI:V, BiSI:V, and BiSeI:V single crystals are grown by the vertical Bridgman technique using ingots synthesized from mixtures of the elements (purity 99.9999%). The grown single crystals have an orthorhombic structure and an indirect energy band structure. The temperature dependence of the optical energy gap is well fitted by the Varshni equation. Impurity optical absorption peaks due to the doped vanadium appear and are assigned to the electron transitions between the energy levels of the V 2+ ion located at T d sites of the host lattice.