Solar Cell Furnace Reflectors

A Successful Material Replacement
Improve Solar Cell Consistency
Increase Throughput
Lower Production Cost

Application
Infrared reflectors for solar cell processing furnaces
Service Conditions
	Emitters operating in excess of 2000°C
	Process temperatures ranging from 400°C to 900°C
Problems
	Too much heat loss through absorption of radiant energy in refractory walls
	Shedding of refractory fibers onto solar cells
	Process control not tight enough due to thermal inertia of furnace walls
Solution
	Add diffuse reflective panels of Accuflect™ IR between furnace walls and emitters
Results
	Improved product consistency
	Tighter process controls
	Faster throughput
	Improved firing profiles
	Improved radiation uniformity in heat zones
	Lowered electrical usage

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Accuflect™ IR was specified for the "hot" face reflector in a solar cell metallizing furnace.

The Accuflect™ IR was backed by traditional fibrous refractory materials providing a good

combination of infrared reflection back into the process zone and thermal insulation to

prevent the unnecessary escape of heat from the reflectors. This permitted the

reflectors to run hot and provide additional heating with their radiosity.

The bottom line is Accuflect™ IR is helping reduce manufacturing cost for the solar cell

manufacturers relentless pursuit of grid parity.

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