Electronic Transport Properties of Transpatent Conducting Amorphous materials

The primary purpose of this study is to examine electronic transport properties of transparent conducting amorphous semiconducting materials，which we found the following our working hypothesis to explore candidate materials.The results obtained are summarized as below：(1)Free carrier absorption in degenerate transparent conducting amorphous oxides，2CdOGeO I D22文件D2 and CdO-PbO文件D22文件D2，was successfully analyzed using Drude formation and the absorption could be described by a single relaxation time.The fundamental parameters associated with electronic transport such as mean free path，effective mass and a microscopic mobility were extracted.(2)X-ray structural analysis of amorphous2CdO-GeO I D22双D 2thin films revealed that local structure around Cd I D12+I D 1 or Ge I D 14+I D 1 ion were similar to that in the crystalline Cd I D 22 D 2 GeO4(With Olive Type Structure)which a n-semor_d_2个D_D-D_D-D-D 2-D-D 2-D 2-D-D-D 2 GeO 4(With Olive Type Structure)which-a n-n-d.(2).(2)X-ray structure D12+I D 1或Ge I D 14He I D 1+I D 1+or W I D 1+I D 1.(4)An N-type highly conducting amorphous chacogenide semiconductor was found by extending our working hypothesis to explore transparent conducting amorphous oxides.Thin films of Cd-In-S showed a conductivity of 10 I D1-1文件D1 and negative Seebeck and Hall coefficients，This is the first demonstration of highly N-type conducting amorphous semiconductor.

The primary purpose of this study is to examine electronic transport properties of transparent conducting amorphous semiconducting materials, which we found the following our working hypothesis to explore candidate materials. The results obtained are summarized as below :(1) Free carrier absorption in degenerate transparent conducting amorphous oxides, 2CdOGeOィイD22ィエD2 and CdO-PbOィイD22ィエD2, was successfully analyzed using Drude formation and the absorption could be described by a single relaxation time. The fundamental parameters associated with electronic transport such as mean free path, effective mass and a microscopic mobility were extracted.(2) X-ray structural analysis of amorphous 2CdO-GeOィイD22ィエD2 thin films revealed that local structure around CdィイD12+ィエD1 or GeィイD14+ィエD1 ion were similar to that in the crystalline CdィイD22ィエD2GeO4 (with olive type structure) which is a n-type semiconductor.(3) Amorphous WOィイD23ィエD2 was converted into degenerate semi-conducting state by ion implantation of HィイD1+ィエD1, HeィイD1+ィエD1+ or WィイD1+ィエD1.(4) An N-type highly conducting amorphous chacogenide semiconductor was found by extending our working hypothesis to explore transparent conducting amorphous oxides. Thin films of Cd-In-S showed a conductivity of 10ィイD1-1ィエD1 ScmィイD1-1ィエD1 and negative Seebeck and Hall coefficients, This is the first demonstration of highly N-type conducting amorphous semiconductor.