Surface photovoltage effects on the isomeric semiconductors of boron-carbide

Caruso, A.N.; Balaz, Snjezana; Bo Xu; Dowben, P.A.; McMullen-Gunn, A.S.; Brand, J.I.; Losovyj, Y.B.; McIlroy, D.N.
February 2004
Applied Physics Letters;2/23/2004, Vol. 84 Issue 8, p1302
Academic Journal
During exposure to synchrotron radiation, closo 1,7-dicarbadodecaborane (metacarborane) and closo 1,2-dicarbadodecaborane (orthocarborane) decompose, and are accompanied by increasingly evident photoemission surface photovoltage effects. We show that metacarborane and orthocarborane form self-doped n-type and p-type boron-carbides, respectively. Surface photovoltage effects dominate the photoemission final state, not the changes in electronic structure due to decomposition. © 2004 American Institute of Physics.


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