4.52W 3 BB A Grade Mono Solar Cell156mm with18.9-19% Efficiency approved by CE TUV

Product introduction

A solar cell, or photovoltaic cell, is an electrical device that converts the energy of light directly intoelectricity by the photovoltaic effect, which is a physical and chemical phenomenon.[1] It is a form of photoelectric cell, defined as a device whose electrical characteristics, such as current, voltage, or resistance, vary when exposed to light. Solar cells are the building blocks of photovoltaic modules, otherwise known as solar panels.

he solar cell works in several steps:

Photons in sunlight hit the solar panel and are absorbed by semiconducting materials, such as silicon.

Electrons and protons are excited from their current molecular/atomic orbital. Once excited an electron can either dissipate the energy as heat and return to its orbital or travel through the cell until it reaches an electrode. Current flows through the material to cancel the potential and this electricity is captured. The chemical bonds of the material are vital for this process to work, and usually silicon is used in two layers, one layer being bonded with boron, the other phosphorus. These layers have different chemical electric charges and subsequently both drive and direct the current of electrons.[1]

An array of solar cells converts solar energy into a usable amount of direct current (DC) electricity.

An inverter can convert the power to alternating current (AC).

The most commonly known solar cell is configured as a large-area p-n junction made from silicon.

Improvements were gradual over the next two decades. However, this success was also the reason that costs remained high, because space users were willing to pay for the best possible cells, leaving no reason to invest in lower-cost, less-efficient solutions. The price was determined largely by the semiconductor industry; their move to integrated circuits in the 1960s led to the availability of larger boules at lower relative prices. As their price fell, the price of the resulting cells did as well. These effects lowered 1971 cell costs to some $100 per watt.[10]

Feature

1. Highly pure mono crystalline silicon wafers are used as the raw material.
2. Silver paste and aluminum paste of superior quality are made into electrode and back surface field.
3. Highly Photoelectric conversion rate, strong resistance to stripping and Superior weldability.
4. Efficient, stable and uniform color.

5. Precise screen printing and high smoothness to ensure the cells are easy to be automatically welded and cut by laser.

Warranty

Peak power of single module is guaranteed in ±0.2%
For solar cells, we assure no cracking or any wholes on it.

For Modules, we assure the 20-year life span.

Packaging

100 pcs in one box 10 boxes in one carton