Cathode reduction process for treating surface of porous silicon
A technology of surface treatment and porous silicon, applied in post-processing, post-processing details, chemical instruments and methods, etc., can solve problems such as unsuitable for industrial production, difficult control accuracy, complex equipment, etc., to achieve convenient operation, easy precision control, The effect of simple equipment
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[0023] Example 1 Cathodic reduction surface treatment technology of porous silicon
[0024] Cathodic reduction surface treatment process of porous silicon:
[0025] Current density of reverse current: 1.2mAcm -2
[0026] Back feed time: 50min
[0027] Porous silicon drying process: cleaning time: 10min
[0028] Drying method: one of four drying methods
[0029] The porous silicon prepared in this embodiment does not grow hairy substances, and its surface is flat and bright as a mirror, and can be stored for a long time in the air. Stored for more than 30 days, there is no tendency to deteriorate. He has done gold plating, photolithography, and production of local porous silicon, and the results are very satisfactory.
Example Embodiment
[0030] Example 2 Cathodic reduction surface treatment technology of porous silicon
[0031] Cathodic reduction surface treatment process of porous silicon:
[0032] Current density of reverse current: 2mAcm -2
[0033] Back feed time: 30min
[0034] Porous silicon drying process: cleaning time: 15min
[0035] Drying method: one of four drying methods
[0036] The porous silicon prepared in this embodiment does not grow hairy substances, and its surface is flat and bright as a mirror, and can be stored for a long time in the air. Stored for more than 30 days, there is no tendency to deteriorate. He has done gold plating, photolithography, and production of local porous silicon, and the results are very satisfactory.
Example Embodiment
[0037] Example 3 Cathodic reduction surface treatment technology of porous silicon
[0038] Cathodic reduction surface treatment process of porous silicon:
[0039] Current density of reverse current: 10mAcm -2
[0040] Back feed time: 6min
[0041] Porous silicon drying process: cleaning time: 15min
[0042] Drying method: one of four drying methods
[0043] The porous silicon prepared in this embodiment does not grow hairy substances, and its surface is flat and bright as a mirror, and can be stored for a long time in the air. Stored for more than 30 days, there is no tendency to deteriorate. He has done gold plating, photolithography, and production of local porous silicon, and the results are very satisfactory.
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