TOPCON Solar Technology Explained

#topcon is the Tunnel Oxide passivated contact technology that Fraunhofer Solar Energy Institute Germany developed in 2013.
It reduces the electron recombination rate at the surface, improving the cell’s overall efficiency.
Benefits:
1. Highest efficiency of 26.89%. The solar panels can produce enough power in a limited space.
2. Immune to LID effect
The advantage of an N-type cell over a P-type is that it is more immune to degradation in sunlight. The N-type solar cell has a minimal quantity of Boron dopant. Therefore, it is immune to Boron-Oxygen complexes that form in the presence of sunlight.
3. Lower Temperature coefficient of power less than or equal to 0.3%/⁰C
P(max) = 500 watts (STC)
Cell temperature = 65⁰C
Power Loss = (cell temperature - 25⁰C)* temp. coeff. of power
= (65⁰C - 25⁰C)* 0.3%/⁰C
= 40⁰C * 0.3%/⁰C
= 12% of P(max)
= 12% of 500 watts
Power Loss = 60 watts
4. Better bifacial gain
2% more power gain than PERC solar panels
5. Better Performance Warranty
less than or equal to 1% in the first year and less than or equal to 0.4% till 30th year
6. Similar Production line
PERC production line can be extended. Hence financially attractive.
Top TOPCON Solar companies
LONGi
Trina
Jinko
Jolywood
Fraunhofer-ISE
Hanwha Q-cells
Canadian Solar
REC Solar
RENA technologies GmbH
AE solar
Challenges:
The TOPCON solar cell requires a good amount of silver to make contact with the cell. The increased use of silver leads to the higher manufacturing cost when compared to the PERC technology.
Another challenge is to keep the Passivation technique effective at higher temperatures. To make the contacts fused properly with the solar cell, a high temperature is required.
However, this may lead to oxide breakage, and the recombination rate increases, reducing the efficiency of the cell. Therefore, a trade-off is achieved between the efficiency and the open circuit voltage of the solar cell.
Conclusion:
Recently, Jinko Solar also announced that it has achieved a maximum solar cell conversion efficiency of 26.89% of its 182 mm N-type monocrystalline TOPCON solar cell.
The solar industry is transitioning towards the latest N-type technologies such as TOPCON, HJT, and IBC.
The HJT and IBC are also exciting and amazing technologies with very high efficiencies. But they require new production lines, increasing the manufacturing cost. Hence affecting their financial feasibility.
Whereas TOPCON technology can be developed with slight modifications to the existing PERC solar cell production line. Hence financially attractive.
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[@tushartibile2810]

GREAT CASE STUDY IN NEW TOP CON TECHNOLOGY..

[@sureshkumarnohwar7783]

Good technical information 🥇👈

[@ekaum-vedicandtechnicalinf1156]

Really very informative

[@Iampin2.0]

Bcl3 Doping hoti h n - type wafer m And Phosphorus dopped hoti h P-type wafer m

[@shivamkumarravi4024]

Wrong information video Because topcon cell use bcl3 gas use and n-type silicon wafer use

[@ekaum-vedicandtechnicalinf1156]

You plz make another video