With the development of informatization and mechanization in the photovoltaic industry, it is particularly important to apply optical measuring microscopes with high-definition confocal microscopy technology to the production of photovoltaic cells to improve product quality, reduce product costs and resource consumption. Therefore, the 3D confocal microscope developed by Millennial Solar came into being. Due to its high efficiency throughout the measurement process, it has become a great helper for the photovoltaic industry.

Can be Used for Precise Measurement 

The Millennial 3D confocal microscope has an ultra-high confocal microscope lens, the z-axis display resolution can reach 1nm, and has a maximum comprehensive magnification of 30-25,000 times, and can accurately measure even sub-micron morphology.

Millennial 3D confocal microscope can be used to measure many points, it can be used for grid line measurement of photovoltaic cells, pyramid textured surface measurement, PR groove measurement, back electrode measurement, laser scribing measurement, Pad point measurement, polishing Silicon wafer grinding measurement, etc. The system software is used to quantitatively measure the measured object to obtain information such as depth, width, surface area, and volume, so as to feedback the process quality of cleaning, texturing, and screen printing in the production of photovoltaic cells.

Innovative Optical Technology Sophisticated Working Principle

Millennial 3D confocal microscope is an optical instrument specially used in the photovoltaic industry to measure the textured surface of the grid line on the surface of photovoltaic cells. It uses optical technology as its working principle, and combines precision Z-direction scanning modules and 3D modeling algorithms on the surface of photovoltaic cells for non-contact measurement scanning to create a 2D or 3D image of the surface. And according to the powerful software measurement function, fast and convenient data intake and analysis are carried out through the intuitive icon interface.

Gridline Measurement  -  Direct and Efficient

Millennial 3D confocal microscopes need to use optical microscopy techniques to disperse white light into different wavelengths of light before starting to measure grid line. When the measured object is located at a certain position, a beam of light with a specific wavelength will be sensed by the element through the focusing optical path. There is a corresponding relationship between the wavelength of the received light and the displacement of the object. By calculating the wavelength of the focal point of the measured light, the distance is converted, and the specific data of the measured area of the grid line is obtained according to the analysis mode of the system software.

Can Observe Tiny Shapes Invisible to the Naked Eye

The general measurement process starts with 10x magnification measurement, the purpose is to better focus on the grid line of the photovoltaic cell. After finding the measured area, it can be switched to 50x magnification strong noise suppression mode and 100x the textured surface of grid line measurement mode, these two modes can visually see the grid line of photovoltaic cells, so as to accurately capture the roughness of photovoltaic cells.

False Color View for Gridline Measurement Analysis

Various Image Choices

After the measurement is finished, it will automatically jump to the analysis page. According to the page, three types of images can be obtained: true color map, intensity map and height map. These three types of images can be converted into 2D or 3D modes. The parameters in the image interface are displayed following the position of the mouse, and the screen size can also be adjusted manually.

Comprehensive Measurement of Line Height and Line Width

In the line width and height analysis interface, the number of section lines can be as high as 48. Click any section line, and the section view of the section will be displayed at the bottom of the screen. According to the set aspect ratio parameters, standard values, and upper and lower deviations, Automatic ON/NG judgment. It will also display the width, height, cross-sectional area, and aspect ratio of the grid lines, as well as the width, height, cross-sectional area, and aspect ratio of the grid lines at 48 cross-sections.

Line height and line width measurement analysis chart

Area Analysis Automated Measurements

After converting to the area analysis function interface, the system can automatically circle the edge of the raster, and automatically calculate the surface area, volume, maximum width and minimum width of the raster in this field of view, etc.It also marks the highest and lowest points of the raster.

E-mail: market@millennialsolar.cn

Millennial 3D confocal microscope provides a variety of testing solutions for battery manufacturers by virtue of its high efficiency and precision in the photovoltaic measurement process. Millennial Solar has always been committed to giving top priority to helping battery manufacturers produce high-quality products, continuously expanding the product array, and creating efficient and flexible products with high cost performance to solve your problems!