Studies on optical properties of Si220 nanoclusters via time-dependent density functional theory calculations
Wenhua Yang , Wencai Lü , Xuyan Xue , Qingjun Zang , Caizhuang Wang
Chemical Research in Chinese Universities ›› 2016, Vol. 32 ›› Issue (6) : 1028 -1033.
Studies on optical properties of Si220 nanoclusters via time-dependent density functional theory calculations
The optical properties of bare and hydrogen passivated Si220 nanoclusters(NCs) in four typical motifs(i.e., bulk-like, onion-like, bucky-diamond and icosahedral motifs) were studied via time-dependent density functional theory(TD-DFT) calculations. The calculation results show that there is a significant blue shift in the optical absorption spectra when the Si NCs are passivated with hydrogen. A strong absorption peak in the visible light region appears for the hydrogenated bulk-like, onion-like and bucky-diamond Si NCs.
Si220 nanocluster / Optical property / Time-dependent density functional theory(TD-DFT)
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