TRANSPORT-PROPERTIES AND ELECTROLUMINESCENCE OF SILOXENE

The transport and electroluminescence properties of siloxene (Si6O3H6) in the as-prepared and annealed states are investigated. As-prepared siloxene is found to show a low dark conductivity (approximate to 10(- 19) Ohm cm(-1)) at room temperature which is thermally activated with an activation energy that is approximately half of the optical gap of siloxene (approximate to 2.6 eV). The presence of ambient gases can in crease the dark conductivity due to intercalation of gas molecules bet ween the two-dimensional siloxene polymer sheets. The photoconductivit y of siloxene is investigated with respect to its spectral and tempera ture dependences. Electroluminescence of siloxene is found for suffici ently high current levels. (C) 1997 American Institute of Physics. [S0 021-8979(97)09121-4].