LED Metrology

LED or light emitting diode

Microspectrophotometers are used to test the color and intensity of each LED pixel and light source


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LED or light emitting diode

Typical test spectra from different LEDs.

 

 

Microspectrometers are used for measuring the spectra, color and intensity of even the smallest LEDs.

Light emitting diodes, or LEDs, utilize molecular compounds to emit light.  The basic LED is made of an a cathode, an emissive layer, a conductive layer, a substrate and an anode.  Placing a charge across the layers causes the emission of photons from the emissive layer.  Different types of atoms and molecules and different manufacturing processes result in various colors and display designs. 

Due to the nature of light emitting diode devices, they can be manufactured by processes that cause rows of microscopic LEDs to be deposited on a surface.  Such designs have led to the common use of LED devices as displays and light sources.  They generate little waste heat and can yield a significant energy savings.

Development testing and quality control of both the components and completed LED devices is done by optical microspectroscopy.  Microspectrometers, such as those made by CRAIC Technologies, are used to measure the spectra and the intensity of the output from individual devices and from groups of devices.  They are even used to map the color and intensity outputs of entire displays.  This is important as manufacturers of light emitting diodes need to make sure that all the different types of devices are the same color and brightness.  A microspectrophotometer does this quickly and easily.  

Learn about microscale LED analysis and testing:

What is a Microspectrophotometer?

Science of Microspectrophotometers

Microspectrophotometer Design

Uses of Microspectrophotometers

20/30 PV™ Microspectrophotometers

 

Solar Cell Metrology & Testing

Solar cells, also called photovoltaic cells, are designed to convert solar energy directly into electricity. There are many designs of such cells and an enormous amount of development effort is currently taking place.  Development includes advances in the traditional crystalline silicon PV cells, thin film PV cells, continuous printing processes and such optical compenents as super- and sub-strates, protective glasses and concentrator modules. Due to such diverse designs and the desire to optimize these devices, flexible tools are required to test them both for development and for quality control purposes.

The CRAIC Technologies™ microspectrophotometer allows for rapid, non-destructive and non-contact testing and quality control of solar cells and other components of solar panels (such as concentrator transmissivity).  These systems are capable of measurements of micron sized areas in both reflectance and transmittance as well as the determination of thin film thickness. CRAIC instruments can also measure polarization anisotropy, optical emissions and even luminescence. These flexible tools are equally at home in the R&D laboratory, the fab floor or the failure analysis facility. Currently, CRAIC solutions are used for film thickness measurement of semiconductors, contamination analysis of precision components and even the reflectivity of coal. 

To learn more about photovoltaic cell quality control and how microspectrophotometers do it, select one of the following links: 

Science of Microspectrophotometry

Microspectrophotometer Design 

 
The lit octogonal head, the lit microscope base and the 20/20 Solar™  are trademarks of CRAIC Technologies, Inc.
 

 

Photovoltaic Cell Metrology & Testing

Solar cells, also called photovoltaic cells, are designed to convert solar energy directly into electricity.  This process occurs when sunlight hits a PV cell, is absorbed and and reaction of events creates a current flow.  There are many designs of such cells and an enormous amount of development effort is currently taking place.  Development includes advances in the traditional crystalline silicon PV cells, thin film PV cells, continuous printing processes and such optical compenents as super- and sub-strates, protective glasses and concentrator modules. Due to such diverse designs and the desire to optimize these devices, flexible tools are required to test them both for development and for quality control purposes.

The CRAIC Technologies™ microspectrophotometer allows for rapid, non-destructive and non-contact testing and quality control of photovoltaic cells and other components of photovoltaic panels (such as concentrator transmissivity).  These systems are capable of measurements of micron sized areas in both reflectance and transmittance as well as the determination of thin film thickness. CRAIC instruments can also measure polarization anisotropy, optical emissions and even luminescence. These flexible tools are equally at home in the R&D laboratory, the fab floor or the failure analysis facility. Currently, CRAIC solutions are used for film thickness measurement of semiconductors, contamination analysis of precision components and even the reflectivity of coal. 

To learn more about photovoltaic cell quality control and how microspectrophotometers do it, select one of the following links: 

Science of Microspectrophotometry

Microspectrophotometer Design 

 
The lit octogonal head, the lit microscope base and the 20/20 Solar™  are trademarks of CRAIC Technologies, Inc.
 

 

Micro-optic Research Instrumentation

20/30 PV Microspectrophotometer for micro optic research

Micro-optic Research deals with phenomena in the ultraviolet, visible and near IR region with wavelength from approximately 300 to 1200 nm.  Micro-optic research deals with studying the properties of light at these scales as well as developing tools and technologies to take advantage of these phenomena.  This includes optical bandgap crystals, colloidal metals and more.  

CRAIC Technologies offers a number of solutions for micro-optics research.  These include spectrophotometers for microscale analysis, such as the 20/30 PV™,  as well as advanced UV-visible-NIR microscopes for imaging micro-optics samples.

 

Contact CRAIC Today!

 

To learn more about the science behind micro-optics research and analysis, select one of the following links: 

 

Science of Microspectroscopy

Microspectrophotometer Design

Uses of Microspectrophotometers

UVM-1™ UV-visible-NIR Microscope

20/30 PV™ Microspectrophotometer

 
The lit octagonal optical head, light microscope base, UVM-1™ and 20/30 PV™ are trademarks of CRAIC Technologies, Inc.
 

 

Nano-optic Research Instrumentation

20/30 PV for Nano-optic Research
nano optic

Nano-optic Research deals with phenomena in the ultraviolet, visible and near IR region with wavelength from approximately 300 to 1200 nm.  Nano-optic research deals with studying the properties of light at these scales as well as developing tools and technologies to take advantage of these phenomena.  This includes optical bandgap crystals, colloidal metals and more.  

CRAIC Technologies offers a number of solutions for nano-optics research.  These include spectrophotometers for microscale analysis, such as the 20/30 PV™,  as well as advanced UV-visible-NIR microscopes for imaging nano-optics samples.

To learn more about the science behind nano-optics research and analysis, select one of the following links: 

Science of Microspectroscopy

Microspectrophotometer Design

Uses of Microspectrophotometers

UVM-1™ UV-visible-NIR Microscope

20/30 PV™ Microspectrophotometer

 
The lit octagonal optical head, light microscope base, UVM-1™ and 20/30 PV™ are trademarks of CRAIC Technologies, Inc.