摘要:

An investigation of metal‐polyacetylene contacts by using x‐ray photoemission spectroscopy is reported. For undopedp‐type polyacetylene, Mg metal formed a rectifying contact with a Schottky‐barrier height of ≳0.6 eV; Au metal formed a pure ohmic contact. Changes in band bending in the polyacetylene with metal deposition were directly observed by x‐ray photoemission spectroscopy and correlated withI‐Vtransport measurements. Our results indicate that the mechanism for Schottky‐barrier formation in polyacetylene is the electrostatic match of work functions at the metal‐polyacetylene interface and that there are no intrinsic or extrinsic filled interface states within the polyacetylene band gap.

ISSN:0003-6951    

DOI:10.1063/1.92130

出版商:AIP    

年代:1981

数据来源: AIP

摘要:

The optical properties of undoped and P‐doped silicon prepared by low‐pressure chemical vapor deposition were measured by spectroscopic ellipsometry over the energy range 3.0–6.0 eV. A marked effect of material microstructure is observed. Approximate values of the density deficit and of the volume fractions of crystalline and amorphous material are estimated as components of the microstructure by comparing measured spectra to those synthesized from constituent spectra in the Bruggeman effective‐medium approximation.

ISSN:0003-6951    

DOI:10.1063/1.92131

出版商:AIP    

年代:1981

数据来源: AIP

摘要:

Thin film cells of composition SnO2/AIROF/fluoride/Au have been constructed, where AIROF is anodic iridium oxide film and fluoride is PbF2on PbSnF4. These devices exhibit reversible electrocoloration and bleaching, with response times as low as 0.1 sec. The behavior of these cells is consistent with the anion insertion mechanism for AIROF electrochromism.

ISSN:0003-6951    

DOI:10.1063/1.92132

出版商:AIP    

年代:1981

数据来源: AIP