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Luminescence study from the silicon oxide films embedded nm carbon particles (CSO) and nm silicon particles (SSO) is of great importance in integrated optoelectronics[1]. The pioneering work on electroluminescence (EL) from the SSO was reported by Dimaria et al[2]. They attributed the light emission to band-band recombination of electron-hole pairs in nanosize silicon particles. This model is referred to as the quantum confinement model. In this paper,we deposit CSO and SSO films onto p-type Si substrate and study comparatively visible EL from the Au/CSO/p-Si and Au/SSO/p-Si structures.