LI Guorong, ZOU Xiangda, WANG Qifan, et al. Crystal structures, electronic structures and conductivity of Si highly doped RuO2[J]. CIESC Journal, 2018, (8): 3717-3723. DOI: 10.11949/j.issn.0438-1157.20180070.
LI Guorong, ZOU Xiangda, WANG Qifan, et al. Crystal structures, electronic structures and conductivity of Si highly doped RuO2[J]. CIESC Journal, 2018, (8): 3717-3723. DOI: 10.11949/j.issn.0438-1157.20180070.DOI:
The first-principle method based on the density functional theory(DFT) was performed to investigate the crystal structural characteristics of highly Si-doped (Ru1-xSix)O2 (x=0
0.125
0.25
0.375 and 0.5). The phase analysis of Si-doped RuO2 evidently proves that the high concentrated Si solid solutions are achieved by thermal decomposition with proper annealing process. The band structures show that the highly Si-doped RuO2 always maintains metallic nature. The density of states suggests that the electrical conductive-hosts originate from Ru-4d and O-2p electrons
along with small amount Si-3p electrons. The descending of electrical conductivity of Si-doped (Ru1-xSix)O2 abides by the single exponential attenuation trend with increasing Si doping.