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

3D Confocal Microscope for precise measurements

3D Confocal Microscope has an ultra-high confocal microscope lens with a z-axis display resolution of up to 1nm and a maximum comprehensive magnification of 30-25,000 times, enabling accurate measurement of even sub-micron morphology.

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, and polished silicon wafer grinding. Measurements etc. The system software is used to quantitatively measure the measured object to obtain information such as depth, width, surface area, and volume to provide feedback on the process quality of cleaning, texturing, and screen printing in the production of photovoltaic cells.

Innovative optical technology and precise working principle

3D Confocal Microscope is an optical instrument specially used in the photovoltaic industry to measure the grating texture on the surface of photovoltaic cells. It uses optical technology as its working principle and combines the precision Z-direction scanning module and 3D modeling algorithm to conduct non-contact scanning on the surface of photovoltaic cells. Create 2D or 3D images of surfaces. And based on the powerful software measurement function, fast and convenient data ingestion and analysis can be carried out through the intuitive icon interface.

Direct and efficient grid line measurement

Before starting to measure the grating, 3D Confocal Microscope needs to use optical microscope technology to disperse the white light into light of different wavelengths. When the object to be measured is located at a certain position, a beam of light of a specific wavelength will be sensed by the component through the focusing light path, there is a one-to-one correspondence between the wavelength of the received light and the displacement of the object. By calculating the wavelength of the focus of the measured light, the distance is calculated, and the specific data of the measured area of the grating line is obtained according to the analysis mode of the system software.

Observe tiny shapes invisible to the naked eye

The general measurement process starts with a 10-magnification measurement in order to better focus on the grid lines of the photovoltaic cell. After the measured area is found, it can be switched to a 50-magnification strong noise suppression mode and a 100-magnification grating texture measurement mode. These two modes can intuitively see the grating of photovoltaic cells, thereby accurately capturing the roughness of photovoltaic cells.

Wide selection of images

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

Comprehensive measurement of line height and line width

In the line width and line height analysis interface, the number of section lines can be up to 48. Click on any section line, and the cross-section view of the section will be displayed at the bottom of the screen. According to the set height-width ratio parameters, standard values, and upper and lower deviations, Automatically perform 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 groups of sections.

Area analysis automatic measurement

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

3D Confocal Microscope provides manufacturers with a variety of testing solutions due to its high efficiency and accuracy in the photovoltaic measurement process. Millennial Solar has always been committed to giving priority to helping manufacturers produce high-quality products, constantly expanding its product array, and creating cost-effective and flexible products to solve your problems!