• 70 nm UV1400 coating onto 200mm wafer
• Full thickness variation lower than 1 nm
• Measured with MM-16 by Horiba Jobin Yvon

Linear Coating - Based on Nanometrix’s Driven Monolayer Assembly (DMA) Process

How Linear Coating Works
Nanometrix brings a breakthrough coating process called Linear Coating to the Photovoltaic industry. Coating is not a new story. However, creating coating at the molecular scale in a continuous, well packed, uniform way is a breakthrough. With Linear Coating, the coating is layered at the molecular level on the surface of liquid. The coating is then applied to the substrate by lifting it up through the liquid.

The latter is formed by depositing the coating substance on the surface of a flowing liquid to create a "film formation line". The natural flatness of a liquid surface is exploited, and the force of the flow packs the molecules against one another in an orderly, linear manner. At the same time as the coating layer is being deposited onto the liquid and packed at the formation line, the layer is transferred from the liquid surface onto a substrate. The process is self-calibrating through a continuous feedback loop.

The DMA Process is
ideal for coating
photovoltaic substrates
of all shapes and sizes.

The Equipment
Four generations of coater prototype have proven the suitability of the DMA process for the creation of ultra high quality substrates in multiple applications.