AVS 49th International Symposium
    Electronic Materials and Devices Wednesday Sessions
       Session EL+SC-WeP

Paper EL+SC-WeP2
Comparison of the Decomposition of Metacarborane and Orthocarborane

Wednesday, November 6, 2002, 11:00 am, Room Exhibit Hall B2

Session: Poster Session
Presenter: A.N. Caruso, University of Nebraska, Lincoln
Authors: A.N. Caruso, University of Nebraska, Lincoln
P.A. Dowben, University of Nebraska, Lincoln
Correspondent: Click to Email
It is now recognized that there are several different polytypes of B@sub 5@C (boron carbide) for which the electronic structure has remained obscure. We present a novel B@sub 5@C polytype that is radically different from previous polytypes in that it forms an n-type semiconductor. Decomposition of closo-1,7 dicarbadodecaborane (metacarborane) and closo-1,2 dicarbadodecaborane (orthocarborane) due to adsorption of photons (32eV soft x-rays) has been observed. We compare adsorption and decomposition for these molecules and attempt to address why molecules with the same basic structure create materials that are wildly different in their electronic (semiconducting) properties.