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BE.WAFFER Ultra black
cell technology

"Did you realize that all of the so-called totally black solar panels on the market contain blue solar cells?"



Well, it causes a color difference on the solar panels and affects the effectiveness of the panels by up to 5%."


Belinus engineers have developed an ultra-black solar cell that absorbs 99.7% of available sunlight using the PERC (assivated emitter and rear contact) solar cell technology. This is a huge step forward over the anti-reflective coatings that are currently used on solar panels. The BE is the name given by Belinus to this particular set of solar cells. 


The tint of a silicon wafer's face after it has been etched with micropores is referred to as "ultra-black solar." The etching is conducted in a liquid solution set at room temperature in just a few minutes. The pores boost the amount of light that the cell absorbs. The cells seem completely dark when nearly all of the light has been absorbed.


The least reflectivity is recommended for solar cells since sunlight that is reflected instead of being absorbed is "wasted." A well-polished silicon wafer surface has a reflectivity of about 40%, giving it a glittering appearance. When the industry's standard anti-reflective coating is applied, the average reflectivity is reduced to about 6% and gives the cells their distinctive dark blue color.

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Reflectance is measured as the percentage of light striking a surface that is reflected. A reflectance of 0.3 percent means that only 0.3 percent of incident light is reflected from the solar cell's surface, while 99.7% of incident light is absorbed and converted into electrical energy.


A tenfold decrease in reflectance would allow up to 3% more useable light to enter the cell, essentially enhancing cell efficiency by that amount. (For example, a 20.4 percent efficient cell becomes a 20.9 percent efficient cell.)


However, there are additional advantages to employing black silicon. Daily, a panel composed of black solar cells will generate substantially more energy than a panel comprised of cells with the industry-standard anti-reflective coating. First off, this is because it reflects less light. Also, because it functions better when the sun is at an angle in the mornings and afternoon. On cloudy days, it also outperforms ordinary cell panels.


"The capacity of Belinus' liquid phase deposition (LPD) technique to passivate black solar cells has been the missing element. "It's what will allow black silicon to realize its full potential," Belinus Marketing Manager Charlotte Vandeputte explains. "


The BE.WAFFER Ultra black solar cells are aesthetically pleasing and beautiful, delivering outstanding performance and profitability. The solar cells have a slick black color, making this a fantastic rooftop option for families that want to emphasize their sense of style in their living space.

The hue undoubtedly represents - power, money, health, success, and wisdom.

Belinus modules powered by BE.WAFFER Ultra black solar cells technologies optimize system power and performance, bringing high-power and visually beautiful PV panels to the European market.

Belinus Ultra Black solar modules powered by the BE.WAFFER Ultra black cell technology has an elegant and modest appearance. This makes them visually ideal for visible rooftops in residential and commercial applications.