Products Description

Photovoltaic alumina substrate is a high-performance ceramic material primarily composed of high purity alumina (Al₂O₃), also known as aluminum oxide. This alumina ceramic is specifically designed and manufactured for applications in the photovoltaic (PV) industry and related fields. As a specialized form of alumina substrate, it serves as a critical foundational component due to its exceptional combination of properties derived from the alumina material. It provides a stable, reliable, and durable platform for various PV components, especially under demanding operational conditions involving high temperatures, electrical stress, and environmental exposure. The manufacture of such components, including custom alumina ceramic parts like plates, discs, and tubes, leverages processes such as alumina ceramic injection molding and precision machining alumina ceramic to meet exact specifications.

Photovoltaic Alumina Substrate

Product name	Photovoltaic alumina substrate
Color	Customized according to the client's requirements
size	Customized according to the client's requirements
Packaging	Carton /Pallet/Wooden case (According to client requirement )
Delivery time	Standard Product-Within 3 days
Items Design	According to the client's drawing or samples
Features	Good quality, low price, Multiple factories, deliver to you based on the one closest to your location
Application	Industrial Ceramics
Certificate	ISO, CE

Ceramics performance parameter

Performance	Unit
		97 Porcelain	99 Porcelain	99 Porcelain	995 Porcelain	997 Porcelain	999 Porcelain
		Al2O3	Al2O3	Al2O3	Al2O3	Al2O3	Al2O3
Density	g/cm3	3.8~3.85	3.85	3.9	3.9	3.92	3.98
Flexural strength	MPa	320	340	450	370	400	550-600
Fracture toughness	MPa·m1/2	4.5	5.6-6	6.2	5.6-6	5.6-6	2.8-4.5
Dielectric constant	εr(20℃,1MHz)	9.2	9.5	9.5	9.7	9.8	9.9
Hardness	GPa	15	15-16			16.3	16.3-18
Hardness	HRC	79	79-80			81	81-83
Volume resistivity	Ω·cm(20℃)	10 14	10 14	10 14	10 14	10 14	10 14
Elastic modulus	GPa	350	330	350	380	380	400
Coefficient of thermal expansion	×10-6/k	7.6	7.6	7.6	7.6	5.4-8.4	6.4-8.9
Compressive strength	MPa	2100	2210	2500	2300	2300	2300
Abrasions	g/cm2	0.1	0.1	0.1	0.1	0.1	0.1
Thermal conductivity	W/m×k(20℃)	24~27	34	38	35	35	38.9
Poisson's ratio	/	0.22	0.22	0.22	0.22	0.22	0.22
Insulation strength	kv/mm	28	28	28	28	30	30
Temperature	℃	1650	1650	1650	1650	1700	1700

Performance Characteristics

The performance of photovoltaic alumina substrates is defined by several key characteristics shared across many alumina ceramic products:

Excellent Electrical Insulation: As an electrical insulator alumina offers very high volume resistivity and dielectric strength, effectively preventing current leakage-a property crucial for alumina insulators and alumina ceramic insulators in electronic systems.
Superior Thermal Conductivity: Alumina ceramic material offers good thermal conductivity, which is crucial for dissipating heat. This property is vital for components like ceramic cooling plates or carrier plates.
High Mechanical Strength and Hardness: It exhibits good mechanical strength and hardness, providing robust physical support. This is exemplified in demanding applications from alumina blocks and alumina ceramic rods to advanced ceramic armor plates and ceramic ballistic plates.
Outstanding Thermal Stability and Chemical Inertness: The aluminum oxide ceramic remains stable across a wide temperature range and is chemically inert. This makes it ideal for high-temperature fixtures, alumina crucibles (such as an alumina boat crucible or cylindrical alumina crucible), and alumina tubes for furnace use.
Good Dimensional Stability and Precision: Alumina sheets, alumina plates, and alumina wafers can be manufactured with tight tolerances and smooth surfaces, essential for precision applications. This extends to custom alumina ceramic sheets, custom alumina ceramic plates, and custom alumina substrates.

Product Application

Alumina ceramics are utilized in several key areas within and related to solar technology:

Backplanes and Carrier Plates for Solar Cells: Used as insulating, thermally conductive support structures (ceramic carrier plates) for HCPV cells or specialized designs.
Thin-Film and Dye-Sensitized Solar Cells (DSSC): Serves as an ideal inert substrate (alumina wafer or Al2O3 wafer) for depositing active layers.
Photovoltaic Module Circuitry and Interconnects: Used as the base for thick-film printed circuits on alumina ceramic substrates.
Concentrating Photovoltaic (CPV) Systems: Employed in receiver packages for electrical isolation and heat spreading.
Balance of System (BOS) Components: Found in alumina ceramic components such as insulating housings, alumina ceramic spacers, alumina ceramic washers, alumina threaded rods, alumina ceramic nozzles, and sensor mounts.
Manufacturing and Testing Fixtures: Used for durable fixtures, alumina lining bricks, trays, or hot plates used in production and testing. This also encompasses custom components like custom alumina ceramic crucibles, custom alumina ceramic rings, and custom semiconductor ceramic disks.
Related High-Performance Applications: The fundamental properties of aluminum oxide ceramics that benefit photovoltaics also make them suitable for demanding applications in other fields, such as ceramic armor plates (ceramic sapi plates) which leverage the extreme hardness and lightweight nature of alumina ceramic armor, and various industrial components like alumina ceramic eyelets, alumina pipes, and porous alumina ceramics.