Relaxation and derelaxation of pure and hydrogenated amorphous silicon during thermal annealing experiments


Autoria(s): Kail, Fatiha; Farjas Silva, Jordi; Roura Grabulosa, Pere; Secouard, Christopher; Nos, Oriol; Bertomeu, Joan Prat; Alzina, F.; Roca i Cabarrocas, Pere
Data(s)

2010

Resumo

The structural relaxation of pure amorphous silicon (a-Si) and hydrogenated amorphous silicon (a-Si:H) materials, that occurs during thermal annealing experiments, has been analyzed by Raman spectroscopy and differential scanning calorimetry. Unlike a-Si, the heat evolved from a-Si:H cannot be explained by relaxation of the Si-Si network strain but it reveals a derelaxation of the bond angle strain. Since the state of relaxation after annealing is very similar for pure and hydrogenated materials, our results give strong experimental support to the predicted configurational gap between a-Si and crystalline silicon

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Identificador

Kail, F., Farjas, J., Roura, P., Secouard, C., Nos, O., Bertomeu, J., Alzina, F., i Roca I Cabarrocas, P. (2010). Relaxation and derelaxation of pure and hydrogenated amorphous silicon during thermal annealing experiments. Applied Physics Letters, 97 (3), 031918. Recuperat 23 març 2011, a http://link.aip.org/link/doi/10.1063/1.3464961

0021-9606 (versió paper)

1089-7690 (versió electrònica)

http://hdl.handle.net/10256/3297

http://dx.doi.org/10.1063/1.3464961

Idioma(s)

eng

Publicador

American Institute of Physics

Relação

Reproducció digital del document publicat a: http://dx.doi.org/10.1063/1.3464961

© Applied Physics Letters, 2010, vol. 97, núm. 3, p. 244308

Articles publicats (D-F)

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Palavras-Chave #Amorphous semiconductors #Espectroscòpia Raman #Hidrogenació #Semiconductors amorfs #Silici #Hydrogenation #Raman spectroscopy
Tipo

info:eu-repo/semantics/article