Recent Advances in Positive Photoresists: Mechanisms and Fabrication

Area of Science:

• Materials Science
• Chemical Engineering
• Nanotechnology

Background:

• Photoresists are essential for photolithography in microelectronics, MEMS, and nanostructures.
• Developing advanced photoresist materials is critical for overcoming challenges in extreme ultraviolet (EUV) photolithography.
• Current photoresist technologies require continuous innovation for enhanced patterning, resolution, and sensitivity.

Purpose of the Study:

• To provide a comprehensive review of recent advancements in positive photoresist research and development.
• To discuss the mechanisms, fabrication techniques, and advantages of various photoresist classes.
• To highlight future research directions for revolutionizing lithography.

Main Methods:

• Review of existing literature on positive photoresists.
• Analysis of mechanisms governing photoresist behavior.
• Exploration of innovative fabrication techniques and material synthesis.

Main Results:

• Discussion of challenges in EUV photolithography and solutions offered by advanced positive-tone resists.
• Detailed examination of non-chemically amplified, organic, inorganic-organic hybrid, and dry film photoresists.
• Emphasis on the benefits and unique properties of each photoresist class.

Conclusions:

• Future research should focus on environmental sustainability and improved photoresist properties.
• Integration of advanced quantum technology can drive significant advancements in lithography.
• Continued development of novel photoresists is crucial for next-generation microelectronic and nanostructure fabrication.