期刊
NANOSCALE RESEARCH LETTERS
卷 9, 期 -, 页码 -出版社
SPRINGER
DOI: 10.1186/1556-276X-9-570
关键词
Constant pulsed current; Uniform mesopores; Cycle time; Pause time
资金
- Special Prophase Project on the National Basic Research Program of China [2012CB326402]
- Innovation Program of Shanghai Municipal Education Commission [13ZZ108]
- Shanghai Science and Technology Commission [13520502700]
In this letter, the uniform 4H silicon carbide (SiC) mesopores was fabricated by pulsed electrochemical etching method. The length of the mesopores is about 19 nm with a diameter of about 19 nm. The introduction of pause time (T-off) is crucial to form the uniform 4H-SiC mesopores. The pore diameter will not change if etching goes with T-off. The hole concentration decreasing at the pore tips during the T-off is the main reason for uniformity.
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