PV paneelien tekniikat (PERC, TOPCon HJT jne)

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There are four main pathways for silicon cell technology beyond PERC: n-PERT (passivated emitter rear totally diffused), n-TOPCon (tunnel oxide passivated contact), heterojunction (HJT) and interdigitated back contact (IBC). None of these are new and all of them are being evaluated and optimized by R&D teams, institutions and business units the world over as candidates for the next mainstream solar cell technology. What unites them is that all are based on n-type silicon, rather than p-type.

 
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The benefits of IBC solar cells​


Reduced losses by shading
IBC solar cell restructuration places frontal metal contact on the rear side of the cell, eliminating shade caused by the busbars. By doing this, IBC solar cell increases the photon effective absorption which results in reduced power losses and several other benefits.

Reduced series resistance
IBC solar cells lower the series resistance at the cell from traditional Al-BSF cells, by being able to place larger metal contacts at the rear side of the cell, becoming a key factor for CPV applications.

Increased power output per square meter
With an increased efficiency for IBC solar cells, an IBC solar panel can be manufactured without space between cells, further increasing the power output per square meter for a single module. This makes IBC solar cell technology more compelling for applications with limited space.

Independent optical/electrical optimizations
Since IBC solar cells relocate metal contacts at the back, the optical and electrical optimizations for the cell are decoupled, making each optimization completely independent from the other, making it easier for researchers to improve one or the other separately.

 

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SmartWire Connection Technology (SWCT®)
is a revolutionary cell connection process for solar module manufacturing. Standard busbars are replaced by 18 micro-wires that gather energy more fluently and strengthen the cells. SWCT®’s superior performance results in advanced module efficiency while negative effects are significantly reduced.


 

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Super Multible Bus Bar technology

· Less shadowing in the cell because there are thinner “power lines”.
· Shorter transport paths of the electrons because more lines are available.
· Less transport resistance because shorter paths are created.
· Less ohmic losses such as heat because the cell heats up less.

 
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