A stripping method of photoresist with nanoscale size on semiconductor

Abstract

The invention discloses a nano-level dimension semiconductor photoresist peeling method. The method comprises steps that a metalized semiconductor plate is immersed in first acetone solution under normal temperature; the metalized semiconductor plate after being immersed in the first acetone solution under the normal temperature is disposed in second acetone solution, and the metalized semiconductor plate disposed in the second acetone solution is cleaned through first power supersonic waves; the metalized semiconductor plate after being cleaned through the first power supersonic waves is immersed in heated third acetone solution; the metalized semiconductor plate after being immersed in the third acetone solution is disposed in fourth acetone solution, and the metalized semiconductor plate disposed in the fourth acetone solution is cleaned through second power supersonic waves greater than the power supersonic waves to remove nano-level dimension photoresist from the metalized semiconductor plate. The method is advantaged in that a technical problem of unexposed photoresist residues in the nano-level dimension structure is solved.

Description

technical field [0001] The invention relates to the field of semiconductor manufacturing, in particular to a method for stripping photoresist with nanoscale dimensions on a semiconductor. Background technique [0002] In recent years, with the increasing attention to micro-nano optics, the manufacture of micro-nano optical components has also developed by leaps and bounds. Lift-off technology is a technology to remove unexposed photoresist after the photoresist is exposed, developed and metal is deposited. In the past, the traditional lift-off process was relatively easy to remove the unexposed photoresist at room temperature for large-scale (micron-scale) line widths, but when the line width was as small as nanometers, the traditional lift-off process could not remove it. In the unexposed photoresist, there will be unexposed photoresist residues in the nanoscale structure. Contents of the invention [0003] The embodiment of the present invention solves the technical pr...

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Problems solved by technology

[0003] The embodiment of the present invention solves the technical problem of unexposed photoresist residue in the nanoscale structure by providing a stripping method of nanoscale photoresist on the semiconductor

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