What is

0 Busbar (0BB) solar Cell Technology?

· About Solar Panels,PV Technology News

Content:

1.Introduction

2.The Birth of 0 Busbar (0BB) Technology

3.Advantages of 0 Busbar (0BB) Technology

4.Disadvantages of 0 Busbar (0BB) Technology

5.0 Busbar (0BB) Solar Cells Interconnection

6.Market Prospects for 0 Busbar (0BB) Technology

Introduction

In the global photovoltaic market, crystalline silicon solar cells dominate a substantial share. However, as the industry rapidly evolves, reducing costs and improving efficiency have become primary challenges for these cells. Traditional solar cells use a significant amount of silver paste to create busbars and fingers, which not only increases costs but also blocks some sunlight, limiting the power generation efficiency. To address these issues, 0 Busbar (0BB) technology was developed. This technology eliminates busbars, reduces the use of silver paste, and increases the light-receiving area of the cells, significantly enhancing the power generation efficiency and economic viability of photovoltaic modules.

The Birth of 0 Busbar (0BB) Technology

When sunlight hits a photovoltaic cell, it generates electricity through the photovoltaic effect. However, this electricity needs to be collected and extracted via grid lines for human use. Traditional photovoltaic cells use silver-based grid lines, divided into fingers and busbars. Fingers are thinner, while busbars are thicker. Electricity is collected by the fingers, transferred to the busbars, and then conducted out via copper ribbons.

Since the first practical monocrystalline silicon solar cell was developed by Bell Labs in 1954, the number and width of grid lines on photovoltaic cells have continuously evolved. From 2BB (two busbars) to MBB (multi-busbars) and SMBB (super multi-busbars), increasing the number of busbars has made each busbar narrower, saving on silver paste and reducing costs. More busbars also shorten the current path in the fingers, reducing power loss and increasing power output.

Despite the widespread application of MBB and SMBB technologies in the industry, some researchers proposed a novel approach: removing the busbars and directly connecting the fingers to the ribbons via sol