Cytotoxicity characteristic of nanocrystalline silicon particle for biological staining labels

Photoluminescence Properties of Alternating Nanocrystalline Silicon/amorphous Silicon Multilayers

Photoluminescence (PL) properties of alternating hydrogenated nanocrystalline silicon/amorphous silicon multilayers were investigated at room temperature and low temperature (77 K). The room-temperature PL spectra clearly show two peaks at about 1.54 and 1.7 eV. The 1.7 eV peak has no crystallite size dependence of the peak energy. The low-temperature PL spectra can be decomposed into three ban...

Raman scattering of alternating nanocrystalline silicon/amorphous silicon multilayers

Nanocrystallite size distribution and structural properties in alternating hydrogenated nanocrystalline silicon/amorphous silicon multilayers were investigated by means of Raman scattering. The obtained Raman spectra show a broad peak at ;480 cm from amorphous Si and some small peaks superposed on the broad peak. According to the positions of the crystallite peak, the mean crystallite size and ...

Simulation of Plasticity in Nanocrystalline Silicon

Electronic conductivity of hydrogenated nanocrystalline silicon films

A heteroquantum-dots (HQD) model for hydrogenated nanocrystalline silicon films (nc-Si:H) is proposed. The main features of our model are as follows. (i) the nanocrystalline grains and the amorphous counterparts in which they are embedded have very different band gap and band structures. As a result, they form heterojunctionlike structures in the interface regions, where the band offset effects...

Nanocrystalline silicon thin films on PEN substrates

We study the structural and electrical properties of intrinsic layers growth close to the transition between amorphous silicon (a-Si:H) and nanocrystalline silicon (nc-Si:H) deposited on glass and PEN without intentional heating. These samples showed different behaviour in Raman shift and XRD spectra when compared with that of samples deposited at 200oC. Electrical properties of these films als...