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|Type:||Artigo de periódico|
|Title:||New Paramagnetic Center In Amorphous Silicon Doped With Rare-earth Elements|
|Abstract:||A new paramagnetic center associated with rare earths (RE) (La, Ce, Pr, Nd, Gd, Er, and Lu) in amorphous silicon is reported. It is shown that RE impurities are incorporated in a-Si and that the density of paramagnetic dangling bonds decreases as a consequence of the presence of these impurities. An interpretation in terms of RE 6s orbitals and crystal-field-split 5d orbital hybridization suggests that the RE behaves as an acceptor impurity with an associated hole in the a-Si valence-band tail, which is responsible for the observed resonance at a g value of 2.100.01. © 1989 The American Physical Society.|
|Citation:||Physical Review B. , v. 39, n. 4, p. 2860 - 2863, 1989.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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