Infrared Heating for Solar Cell Paste Drying

SCREEN-PRINTED PASTE DRYING

Match the drying step to the paste and cell process.

An application concept for controlled infrared-assisted drying after solar-cell paste printing.

ZONED

PROCESS HEAT

The Process Challenge

Screen-printed metallization paste needs a defined drying step before the next specified operation. The thermal profile must suit the paste formulation and cell architecture while handling emitted vapors and limiting unwanted thermal exposure.

The Infrared Approach

A controlled infrared-assisted conveyor section can be evaluated for paste drying. Heating zones, belt speed and managed exhaust are reviewed together. Drying, contact firing and tabbing or stringing are separate operations; the appropriate process depends on the cell technology and paste supplier requirements.

PRINT

Apply the specified paste

DRY

Follow the approved thermal profile

EXHAUST

Manage released vapors

TRANSFER

Continue the specified process

Application Features

• Radiant heating can be evaluated within a controlled conveyor section
• Zone layout can match the wafer path and process recipe
• Heating demand can follow belt movement and process interlocks
• Airflow and exhaust are reviewed with the paste chemistry
• Emitter and reflector selection follows absorption and thermal trials

Process FAQ

Are paste drying and contact firing the same step?

No. They serve different purposes and need their own process specifications. A firing temperature must not be presented as a general drying setting.

Is the same profile suitable for every cell architecture?

No. Confirm the cell technology, paste system and permitted thermal budget before selecting a profile or emitter.

Typical Configuration