Jinko Solar Virtual Tour-Cell Factory

Welcome to Jinko Solar's Cell Manufacturing Facility

hello everyone i'm dr cho from the technical department of jingko sangra now we are in front of the cell 1 workshop this workshop has 13 production lines and with annual capacity of 5.8 gigawatts it produces 182 millimeter per cell right now and have room for the untyped cell upgradation

let's follow me and go inside to see some cold processes

the first thing we need to do before entering the workshop is to putting on the cleaning's clothes and the shoes also face mask then we will go through the air washing room clean air will blow away the dust and particle from outside environment in order to maintain the cleaning slab of their workshop

first study sold out wafers will be shipped to this room where they will be loaded to the agv through moving belts then the agv will automatically take the wafers to the first process later you will see that for most every step agv are used making this workshop one of the most advanced fully automatic high efficient one in the pv industry

Initial Cell Processing Steps

here let me show you the first step of cell processing the texturing process

Texturing Process

the main purpose of tertiary is to form a pyramid service on mono wafer to reduce the light reflection and in the same time to remove the salt damage layer from wafer slicing

now you can see the process of phosphorus diffusion during this process we form an n-type emitter by doping phosphorus into the wafer using high temperature furnace and parkour as precursor you could imagine the wafer is positive part and the emitter is the negative part then we have an internal electrical field to separate the electrons and the holes

Laser Selective Emitter

next i will introduce the laser selective emitter we use laser as an energy source and the psg layer as phosphorus source to form locally heavy doped area to ensure good contact with metallization

Surface Treatment and Preservation

this process is called chain oxidation

Chain Oxidation

a dense acai layer is formed on the surface after ac process by chain oxidation which can protect the heavy doped area and prevent the corrosion during alkali polishing

afterwards this process is called alkali polish

Alkali Polish

first we use hf chemical to remove psg layer on the real side then we use koh chemical to polish the real size service of silicon wafer prepared for preservation layer deposition

afterwards this process is called thermal oxidation

Thermal Oxidation

we use high temperature furnace with oxygen atmosphere to form thin outside on the wafer which improve the preservation quality and reduce the surface concentration of phosphorus at the same time

Advanced Preservation and Metallization Preparation

now we are at side preservation process

Rear Side Preservation

we use plasma enhanced chemical vapor deposition method with silent ammonia tma as precursors to depth the aluminum oxide silicon nitride stack thin films on the real side which result in an excellent service preservation quality this process step is the key for perk sale and currently this structure is commonly been used in the industry

next process is called pcbd

Front Side PCVD

this process is similar to railside preservation process step it also uses plasma enhanced chemical vapor deposition method and only dab the nitrite thin film on the front side to reduce the light reflection and improve the preservation quality at the same time

now we are at laser opening

Laser Opening

we use laser as energy source to open the rear side preservation layer for metallization content

Final Cell Assembly and Quality Control

afterwards you can see screen printing process here

Screen Printing

the both side metallization is complete by the screen printing technology with silver aluminum pads to form front side and rear side pattern the pads lay down and the pattern design are crucial for the performance and quality control also cost balance we have our know-how inside

this process is called fast firing

Fast Firing

the contact between the metallization path and silicon wafer is formed during this process with peak temperature above 700 degrees c

follow me to see the process of electrical generation

Electrical Generation

with the electrical current injection the hydrogen atom tends to passivate the defect on the interface and the second bug

finally every cell will go through the appearance inspection and the el iv testing then sorted into different categories for further module assembly

the sale quality controlled strictly through these inspections and the testing tools automatically

Manufacturing Excellence and Automation

above you have been shown briefly the whole process of cell manufacturing the whole workshop is a large clean room the highest kalining level area reaches 1k which is tier 1 in the industry

this workshop is currently the most advanced fully automatic fully process monitored and intelligent workshop in the industry the direct labor is reduced by 36 percent as compared to peers and the labor efficiency reaches 7.1 megawatt per person per year which is again the highest in the industry at the same time we are the first company to introduce an automatic material handling system and automatically timing dispatch system

Technical Specifications

Frequently Asked Questions

What is the annual production capacity of the Cell 1 workshop?

The Cell 1 workshop has an annual capacity of 5.8 gigawatts.

What makes the Jinko Solar cell manufacturing workshop highly advanced?

It is described as one of the most advanced, fully automatic, high-efficient, fully process monitored, and intelligent workshops in the PV industry, featuring AGVs, a 1K cleaning level, and automatic material handling and dispatch systems.

How does Jinko Solar ensure cell quality control?

Every cell undergoes appearance inspection and EL/IV testing, after which they are sorted into different categories for module assembly. The cell quality is strictly controlled through these automatic inspections and testing tools.