We have found, from optical transmission and photoconductivity measurements, that the width of the Urbach's tail and the optical-band gap value depend on the amount of disorder present in the network of a-Si: H films. The nature of the disorder, being it thermal or structural, affects in the same way the behaviour of the absorption coefficient and supports the hypothesis that the value of the optical-band gap depends only indirectly on the overall hydrogen content.
Disorder and optical characterization of evaporation deposited a-Si: H films
GRASSO, Vincenzo;MEZZASALMA, Angela Maria;MONDIO, Guglielmo;NERI, Fortunato
1982-01-01
Abstract
We have found, from optical transmission and photoconductivity measurements, that the width of the Urbach's tail and the optical-band gap value depend on the amount of disorder present in the network of a-Si: H films. The nature of the disorder, being it thermal or structural, affects in the same way the behaviour of the absorption coefficient and supports the hypothesis that the value of the optical-band gap depends only indirectly on the overall hydrogen content.File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
