Electrical characterization of nanocrystalline Si films by scanning tunnelling spectroscopy and beam-induced current in the scanning tunnelling microscope

被引:4
作者
Nogales, E [1 ]
Méndez, B [1 ]
Piqueras, J [1 ]
Plugaru, R [1 ]
机构
[1] Univ Complutense Madrid, Fac Ciencias Fis, Dept Fis Mat, E-28040 Madrid, Spain
关键词
D O I
10.1088/0957-4484/14/1/315
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Nanocrystalline silicon films, with an average nanocrystal size of about 10 nm, obtained by boron implantation of amorphous silicon layers, have been studied by remote-beam-induced current (REBIC) in a scanning tunnelling microscope (STM) and by current imaging tunnelling spectroscopy. STM images reveal a cell structure with cell sizes of about 200 nm. STM-REBIC images display space-charge regions associated with the cell boundaries. The STM-REBIC contrast has been found to depend on the implantation dose and the thermal treatment given to the sample. The results show the capability of STM-REBIC to image electrically active regions in nanocrystalline silicon films with a resolution of up to 10 nm.
引用
收藏
页码:65 / 68
页数:4
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