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Front-side Bus-bars Silver paste GD103/GD104/GD110

Scope of application:front-side bus-bars of mono/polycrystalline silicon solar cells
Characteristic: Excellent welding adhesion
                    Excellent solderability and durability
                    Non-contact to emitter for Voc protection
                    Good printability
                    Good electrical conductivity

Physical and chemical properties:

项目

数据

检测条件

细度(μm)

第二刻度

≤13

F.O.G刮板细度计

90%

≤10

粘度(Pa·S)

80~220*1

BrookfieldDV-Ⅱ+Pro/CP52转子/5RPM/25℃

固含量(%)

80.0±1.0(GD103) 70.0±1.0(GD104)

高温灼烧

Recommended process conditions:
Base wafer:Monocrystalline silicon, polycrystalline silicon
Stir:Before using, rolling slowly at 15-20 RPM for 2-4 hours, then stirring for 5-10 minutes manually with a clean stirring blade, avoiding introducing bubbles during stirring.

Print:In clean, ventilated environment, screens of 200 to 325 mesh with emulsion thickness of 5-25 micron are recommended, printing speed at 180-260mm / sec.
Cleaning:  Ethanol or terpinol recommended.
Cleaning:Ethanol or terpinol recommended.
Dilution:X12 diluent maybe used to adjust viscosity to adapt to process requirements, though usually not recommended. New pastes shall not need be adjusted.
Sintering:peak temperature at 760℃~820℃ while 2~3s above 650℃.
Soldering:match normal industry standard materials and processes, use cleaning-free LO/MO activity level flux. Both silver containing and non-silver welding strips are suitable.
Storage: Temperature at 5 ~ 25 ℃, humidity <75%, fully sealed, avoiding moisture, fire, heat, and introduction of impurities.
Validity:six months since the date of production
Health and Safety:Refer to MSDS of this product.

Recommended sintering profile:

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