Mechanism of p-type-to-n-type conductivity conversion in boron-doped diamond

Ying Dai; Dadi Dai; Donghong Liu, G.; Shenghao Han, G.; Baibiao Huang
March 2004
Applied Physics Letters;3/15/2004, Vol. 84 Issue 11, p1895
Academic Journal
We report on the role of two boron–hydrogen complexes in the conductivity conversion from p-type to n-type in boron-doped diamond samples. The calculated electronic structures of the simulated clusters show that the boron–hydrogen complex of hydrogen–boron pairs (BH[sub 1]) is characteristic of p-type conductivity, and that of two hydrogen–boron centers (BH[sub 2]) or three-hydrogen-boron centers (BH[sub 3]) have a character of n-type conductivity. The phenomenon of conversion from p-type-to-n-type conductivity through deuteration may be explained by the transformation from the BH[sub 1] into BH[sub 2] and/or BH[sub 3] complexes. © 2004 American Institute of Physics.


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