silicon nanoclusters;
electron transport;
current-voltage characteristic;
variable-range hopping;
trap;
D O I:
10.15407/spqeo19.01.009
中图分类号:
O4 [物理学];
学科分类号:
0702 ;
摘要:
The current transport through insulating SiO2 films with silicon nanocrystals in Si/SiO2(Si)/A1 structures has been investigated in the wide range of temperatures (82...350 K). The nanocomposite SiO2(Si) films containing the silicon nanoclusters embedded into insulating SiO2 matrix have been obtained by ion-plasma sputtering of silicon target and subsequent high-temperature annealing. Based on the detailed analysis of current-voltage characteristics, calculation of some electrical parameters has been performed and the mechanism of electron conductivity of nanocomposite SiO2(Si) films has been ascertained. The electrical conductivity of the films is based on the mechanism of hopping conductivity with variable-range hopping through the traps near the Fermi level.
机构:
Qingdao Univ, Cultivat Base State Key Lab, Qingdao 266071, Peoples R ChinaQingdao Univ, Cultivat Base State Key Lab, Qingdao 266071, Peoples R China
Wang, Y. Q.
Li, T.
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机构:
Qingdao Univ, Cultivat Base State Key Lab, Qingdao 266071, Peoples R ChinaQingdao Univ, Cultivat Base State Key Lab, Qingdao 266071, Peoples R China
Li, T.
Liang, W. S.
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机构:
Qingdao Univ, Cultivat Base State Key Lab, Qingdao 266071, Peoples R ChinaQingdao Univ, Cultivat Base State Key Lab, Qingdao 266071, Peoples R China
Liang, W. S.
Duan, X. F.
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机构:
Chinese Acad Sci, Inst Phys, Beijing Lab Electron Microscopy, Beijing 100080, Peoples R ChinaQingdao Univ, Cultivat Base State Key Lab, Qingdao 266071, Peoples R China
Duan, X. F.
Ross, G. G.
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机构:
INRS EMT, Varennes, PQ J3X 1S2, CanadaQingdao Univ, Cultivat Base State Key Lab, Qingdao 266071, Peoples R China