Accession Number : ADA192963

Title :   Growth and Characterization of CuGaS2, CuA1S2 and CuGa0.9A10.1S2 Single Crystals.

Descriptive Note : Technical rept.,

Corporate Author : BROWN UNIV PROVIDENCE RI DEPT OF CHEMISTRY

Personal Author(s) : He, X-C ; Shen, H-S ; Wu, P ; Dwight, K ; Wold, A

PDF Url : ADA192963

Report Date : 15 Mar 1988

Pagination or Media Count : 8

Abstract : In the search for suitable chalcogenides which may be used as infrared windows at 10 micrometers, several chalcogenides of copper, gallium and aluminum have been investigated. Single crystals of CuGaS2, CuAlS2 and CuGa0.9Al0.1S2 have been grown by chemical vapor transport using iodine as the transport agent. They all crystalline with the chalcopyrite structure. The energy gap, infrared transmission, stability in oxygen and microhardness have been measured for these compounds. CuAlS2 has higher thermal stability and hardness than CuGaS2, but its IR transmission range is smaller. The IR transmission range of the 10% solid solution lies between those of the two end members; its thermal stability and optical band gap are lower than those of both end members.

Descriptors :   *CHALCOGENS, *SINGLE CRYSTALS, ALUMINUM, CHEMICAL PROPERTIES, COPPER, ENERGY GAPS, GALLIUM, INFRARED WINDOWS, IODINE, MICROHARDNESS, OXYGEN, PYRITE, THERMAL STABILITY, TRANSMITTANCE, TRANSPORT, TRANSPORT PROPERTIES, VAPORS, CRYSTAL GROWTH, N TYPE SEMICONDUCTORS, TIN COMPOUNDS, SULFIDES

Subject Categories : Crystallography
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE