Do you ever look up at the sky and marvel at how much potential energy is stored in the sun? Did you know that this same energy can power your home using solar cells from TOPCON? This post will discuss how Topcon Solar cells works and how modulated silicon-patterned photovoltaic (PV) makes up one of the most dependable, efficient ways to capture solar energy for home use. Get ready as we dive into how TOPCON Solar Cells work.
Structure of Topcon Solar Cell:
Solar cell technology has come a long way in recent years, and TOPCON solar cell structure is one of the field’s latest and most advanced technologies. Unlike typical crystalline solar cells, the substrate material used in TOPCON cells consists of both P-type & N-type semiconductors. But what really sets TOPCON apart is the use of a finely layered Aluminum oxide (Al2O3) passivation layer on the P-type material surface, along with a highly polysilicon thin film below a Silicon dioxide (SiO2) 2 nm tunneling layer.
This technology helps to reduce recombination and increase efficiency, making TOPCON cells highly sought after in the industry.
How Topcon Solar Cells Works?
Processing of Topcon Solar Cell:
The TOPCON structure features an ultra-thin oxide layer and doped polysilicon film compared to the traditional crystalline structure.
Ultra-Thin Oxide Layer
One of the key factors in increasing conversion efficiencies is the ultra-thin oxide layer. This layer is typically only 1.4 – 1.5 µm thick and can be produced through the liquid chemical dipping method in the acidic mixture at temperatures above 90°C.
The oxide layer works to attach to the dangling bonds on the single crystal’s surface, allowing for the quick transfer of electrons and holes. The use of an extremely thin oxide layer can greatly improve the performance of the technology and should be considered in any manufacturing process.
The Doped Polysilicon Film
Doping polysilicon films is a common technique used to increase the conductivity of the material. The process can be achieved through either LPCVD or PECVD, during which the material is exposed to certain chemical vapors.
By using these techniques to create a highly intoxicated thin film of polysilicon, it is possible to decrease the resistance of the joint and improve the contemporary output. The resulting increased conductivity makes it a valuable material for use in a variety of industries, including semiconductors and electronics.
Fabrication of Topcon Process
The TOPCON process is a crucial step in solar cell fabrication. The process begins with texturizing both sides using potassium hydroxide and boron diffusion created through a solution of boron tribromide solution. The next step involves the thermal development of tunneling SiOx, followed by the accumulation of a layer of pure polysilicon in the system of LPCVD.
Once cleaned with chemicals, the boron emitter is less reactive with a dielectric layer film, and PECVD SiNx: H. covers the backside of the SiOx/n+ poly-silicon layer. The entire process culminates with the screen printing of metallization contacts on each side. Understanding TOPCON fabrication is essential for anyone in the solar industry, and this complex process requires the utmost precision and attention to detail.
It’s obvious that TOPCON solar cells are a great way to generate energy. Not only are they efficient and environmentally friendly, but they also eliminate the need for expensive grid-based energy. The use of these cells can reduce your energy bills quite significantly, while also generating electricity from natural sources. Now you know how TOPCON solar cells work and what their advantages are over conventional technologies.
Stay tuned for more updates on how you can make use of this amazing renewable energy source for your own home or business. Follow us for more posts on this topic, as well as other news about renewable energies and green living solutions!
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