Specific Process Knowledge/Lithography/UVExposure

UV Exposure Comparison Table

Equipment		KS Aligner	EVG Aligner	III-V Aligner	Inclined UV Lamp
Purpose		TS and BS Alignment UV exposure	TS and BS Alignment UV exposure	TS Alignment UV exposure	UV exposure
Performance	Minimum feature size	1.25µm down to 1.0µm	1.25µm	2µm
	Exposure light/filters/spectrum	350W Hg-lamp 365 nm notch filter, intensity in Constant Intensity mode: 7mW/cm2 @ 365 nm 303 nm filter optional	350W Hg-lamp SU8 filter (long-pass), intensity in Constant Power mode: 7mW/cm2 @ 365 nm 365 nm filter optional	350W Hg-lamp the hole spectrum of 350W hg-lamp	1000 W Hg(Xe)lamp source near UV (350-450nm), mid UV (260-320nm), and deep UV (220-260nm)
	Exposure mode	proximity, soft, hard, vacuum contact	proximity, soft, hard, vacuum contact	proximity, soft, hard, vacuum contact	Flood exposure Proximity exposure with home-made chuck and maskholder
Process parameter range	Positive Process	dose 42mW/cm2 for 1,5um AZ5214E resist dose 56mW/cm2 for 2,2um AZ5214E resist	dose 23mW/cm2 for 1,5um AZ5214E resist dose 35mW/cm2 for 2,2um AZ5214E resist		polymer depended
Process parameter range	Negative Process	dose 21mW/cm2 for 1,5um AZ5214E resist dose 28mW/cm2 for 2,2um AZ5214E resist then 210mW/cm2 flood exposure after PEB	dose 16mW/cm2 for 1,5um AZ5214E resist dose 18mW/cm2 for 2,2um AZ5214E resist then 210mW/cm2 flood exposure after PEB		polymer depended
Substrates	Batch size	1 small sample 1 50 mm wafers 1 100 mm wafers 1 150 mm wafers	1 50 mm wafers 1 100 mm wafers 25 150 mm wafers with automatic handling	1 small samples 1 50 mm wafers 1 100 mm wafers 1 150 mm wafers	all sizes up to 8inch
	Allowed materials	All cleanroom materials Dedicated 2inch chuck for III-V materials	All cleanroom materials except III-V materials	III-V compounds	All cleanroom materials

KS Aligner

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SUSS Mask Aligner MA6 is designed for high resolution photolithography. The 365nm exposure wavelength version is capable of 1.25 (1.0) um resolution in vacuum contact. All contact exposure programs (vacuum, hard, soft, proximity) are supplied. Two alignment options are available: top side alignment (TSA) with a split field or a video microscope and back side alignment (BSA) with BSA microscope. It is also possible to make IR- light alignment.

The user manual(s), quality control procedure(s) and results and contact information can be found in LabManager: Equipment info in LabManager

EVG Aligner

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Aligner-6inch EVG620 is placed in Cleanroom 13.

EVG620 aligner is designed for high resolution photolithography. The machine can be used for 2, 4 and 6 inch substrates. Cassette-to-cassette handling option is available only for 6inch substrates. The automatic pattern recognition software is available for the special alignment marks design recommended of EVGroup. Please contact Danchip staff for further information. Available exposure mode: proximity, soft, hard and vacuum contact. Two alignment options are available: top side alignment (TSA) and back side alignment (BSA). IR-light alignment also an option.

The user manual(s), quality control procedure(s) and results and contact information can be found in LabManager: Equipment info in LabManager

III-V Aligner

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The SÜSS MicroTec MA1006 mask aligner located in the III-V cleanroom is dedicated for processing of III-V compound semiconductors.

Specific use of the mask aligner can be found in the standard resist recipes.

Equipment performance and process related parameters

Purpose		alignment and UV exposure
Performance	Exposure mode	soft contact, hard contact, proximity, flood exposure
	Exposure light/filters	365 nm, 405 nm
	Minimum structure size	down to 2µm
	Mask size	5x5inch
	Alignment modes	Top side only
Substrates	Substrate size	50 mm wafers small pieces 1x1cm
	Allowed materials	III-V materials
	Batch	1

Inclined UV Lamp

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The Inclined UV lamp is 1000 W Hg(Xe)lamp source designed for near UV, 350-450nm, mid UV, 260-320nm, and deep UV, 220-260nm exposures of resists and polymers. The exposure source can be also used to make an inclined exposure in air or in the media tank.

The tool was purchased in February 2009 from Newport. The exposure lamp has a official name: Oriel Flood Exposure Source, unit 92540. All other parts of equipment: substrate and mask holder with media tank, exhaust box around the tool, timer controller, were designed and build at DTU Danchip workshop.

The substrate and mask holder with a media tank was designed as part of Master Thesis of DTU Nanotech, Andres Kristensen group. The exhaust box was made as part of safety and the timer controller was build to control exposure time.

The technical specification and the general outline of the equipment can be found in LabManager.

The user manual(s), quality control procedure(s) and results and contact information can be found in LabManager: Equipment info in LabManager