M4 Solar Wafer Size

The process of manufacturing solar cells from single crystal p type silicon wafers is detailed below.

M4 solar wafer size.

This time longi set the standard wafer size at 166mm and publicized the price of m6 mono wafers rmb 3 47 per piece us 0 49 showing its intention to the world for a powerful push of m6. Although m2 wafers are easy to integrate even larger wafer sizes are beginning to be used to obtain 400 w plus modules. At that time our taiwanese cell manufacturer went straight from m2 to the m4 with a size of 161 7 mm in order to only make necessary investment purchases once together with the multi busbar variant. However improvements in cell efficiency appear to have hit a bottleneck making wafer size a hot topic among manufacturers once again.

This is the generalized method used based on a number of sources. The demand for wafers has exponentially increased over the past two decades due to the increase in the production and sale of pv systems smartphones and more. Why wafer size matter. Wafer sizes have increased in small incremental ways over the last seven years from m1 156 75 205 mm diagonal length to m2 156 75 210 mm and to m4 161 7 211 mm.

At intersolar 2019 we had already introduced the black ibc monosol zl mb black with the wafer size m4. But now it appears a new milestone moment has arrived. Since 2017 156 75 mm m2 wafers have been the standard. It should be noted that different companies have different patented and trade secret processes for each of these steps but the steps remain the same.

This was the driver for all cell producers to switch to the then larger wafer size after 2010 156mm x 156mm wafers increasingly became the popular choice lower cost per watt for p type mono. M4 wafers make better use of the ingot than m2 wafers help increase module power by 20 to 25 watts and thus support material and labor cost reduction during installation maximum output.