The near-optical absorption edge photoresponse in CVD diamond thin films, prepared by the CVD method, and the photoresponse in thin boron carbo-nitride (BCN) films, prepared by the rf-inductively coupled plasma CVD technique, have been studied. In case of diamond, the subgap photoresponse is strongly influenced by surface treatments such as plasma hydrogenation or annealing. It is shown that, in case of BCN films, the gap Eg and the slope of the fundamental absorption edge depend on deposition parameters. The energy slope E0 of the Urbach tail is typically 300 meV for the nanocrystalline h-BCN films, and a typical value for Eg is about 6 eV.
Nesládek, M., Vaněček, M., Meykens, K., Haenen, K., Manca, J., De Schepper, L., et al. (2001). Study of UV and Subgap Photocurrent Response in Diamond and BCN Thin Films for Detector Applications. PHYSICA STATUS SOLIDI. A, APPLIED RESEARCH, 185(1), 107-113 [10.1002/1521-396X(200105)185:1<107::AID-PSSA107>3.0.CO;2-2].
Study of UV and Subgap Photocurrent Response in Diamond and BCN Thin Films for Detector Applications
Verona Rinati, G.;
2001-01-01
Abstract
The near-optical absorption edge photoresponse in CVD diamond thin films, prepared by the CVD method, and the photoresponse in thin boron carbo-nitride (BCN) films, prepared by the rf-inductively coupled plasma CVD technique, have been studied. In case of diamond, the subgap photoresponse is strongly influenced by surface treatments such as plasma hydrogenation or annealing. It is shown that, in case of BCN films, the gap Eg and the slope of the fundamental absorption edge depend on deposition parameters. The energy slope E0 of the Urbach tail is typically 300 meV for the nanocrystalline h-BCN films, and a typical value for Eg is about 6 eV.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
