Our goal is to convert solar energy, the world’s most unlimited resource, into electricity at the lowest unit cost. In line with this goal, we are working to provide optimum solutions by closely following all technological developments in the world.
What is Half-Cell Technology?
Half-Cell Technology; It has emerged as a result of R&D studies aimed at creating a much more efficient panel cell within the scope of solar cell technologies. Half-Cut Panel, which is obtained as a result of cutting the standard solar panel cell in half, consists of traditional polycrystalline/monocrystalline silicon cells exactly cut in half. Half Cell Technology, where PV module dimensions are almost preserved, ensures maximum energy from solar panel cells even in low light conditions.
Why Half-Cell Technology?
Half-Cell Technology, especially with the technology that has been developing since 2018, is one of the methods of obtaining more power than a unit square meter by using existing technology. Half Cell Technology, which brings many innovations with it, generally stands out with the following advantages;
- Nominal operating temperature is 2-3 degrees lower than modules with normal cells.
- Due to less cell area, the risk of Hot Spot is less.
- Hot Spot temperature is 10-20 degrees lower than normal cell module.
- Weight bearing and related stretching are more durable than full cell. In parallel, it offers a longer life panel.
- It is less affected by ghosting.
Why M10 (182*182mm) Cell Technology?
In line with low electricity production cost studies, ultra-powerful photovoltaic modules have started to be produced, with the effect of technological developments in recent years and especially with the large wafer production developed in 2019. Following these developments, 410 Watts began to be discussed in 2019, 450 Watts in the first half of 2020 and 500+ Watts towards the end of 2020.
While 156.75mm (M1), which has been the standard for many years in the semiconductor industry, replaced itself with 158.75mm (M2) in 2015, the pace of technological developments has increased considerably as the world’s leading manufacturers produced wafers up to 166mm and 210mm in 2019 and went beyond the industry standard. . Since the main goal is to produce electricity at the lowest cost, technological developments have accelerated compared to previous years at these measures, which are out of standard. As a result of the studies, the industry was divided into two groups as 182mm wafer (M10) and 210mm wafer (M12).
The cell that provides optimum efficiency in terms of Watt/Square meter value within the current cell efficiency/module area ratios are M10 cells with the size of 182*182mm. The main reasons for this situation can be summarized as follows;
- Raw Material Supply: It has been observed that glass, which is one of the main raw materials outside the cell, and EVA and Backsheet manufacturers easily adapt to the change.
- Compatibility of Cell Production Equipment: It has been observed that existing furnaces can produce monocrystalline ingots at a much lower cost in the production of 182mm ingots and wafers.
- Technical Compatibility: The 182mm wafer crystallization has basically the same characteristics and even the same unit efficiency as the 158mm wafer crystallization in drawing the crystal block. It is still open to improvement in unit yield.
In terms of cell cut and Module Conversion Rate, the same rate was observed with the 166mm wafer both during cutting and during the PERC technology application process. On the other hand, it has been determined that the existing laser cutting machines work smoothly on 182mm cells.
More Convenient Transportation: Compared to modules with 166mm and 210mm cells, the modules with the highest container/module ratio are 182mm products.
With modules with 210mm cells, 448 modules fit in one 40HQ container.
With modules with 182mm cells, 620 modules fit in a 40HQ container.
System Components Saving [ Balance of System (BoS)]: In addition to the advantages mentioned above, 182mm modules also provide savings in system components (construction, cabling, labor, etc.) between 2% and 3% in physical field applications, compared to other sized panels. This means producing electricity directly at a lower cost.