Light emitting diodes (LED)

Applications for LEDs are growing in different end markets such as automotive, agricultural lighting, disinfection, general lighting, etc. Manufacturers are looking for improved strategies to increase yield and performance by developing better and more complex structures.
A LED structure consist of stacks of several semi-conducting layers that are grown by an epitaxial process. Quality control of each layer is crucial to ensure a highly reliable and efficient end product.
Attolight’s tools shorten the epitaxy development cycle through fast feedback on the quality of the epitaxial layers.

Examples:

Display

In today’s connected world, there is an ever increasing demand to show information in real time on displays. Professional user and consumers create a demand for high performance displays in various industries such as Oil & Gas, Healthcare, Manufacturing, Retail, and others. These displays need a high contrast ratio and brightness, to be energy efficient and show long lifetimes.

An increasing number of manufactures implement µLED and solid state laser (SSL) illumination systems.

SSL and µLED structure consist of stacks of several semi-conducting layers that are grown by an epitaxial process. Quality control of each layer is crucial to ensure a highly reliable and efficient end product.

Attolight’s tools shorten the epitaxy development cycle through fast feedback on the quality of the epitaxial layers.

Examples:

Power & radio frequency devices

The power supply segment, new wireless charging norms, wireless communication and autonomous driving create a demand for high electron mobility transistors (HEMTs). Gallium nitride (GaN) HEMTs are a very promising technology to satisfy the needs of most of these applications. GaN HEMTs are complex combinations of strain relaxation layers and device structures grown by epitaxial processes.
Quality control of each layer is crucial to ensure a highly reliable and efficient end product.
Attolight’s tools shorten the epitaxy development cycle through fast feedback on the quality of the epitaxial layers.


Silicon Photonics

Silicon photonics uses light instead of electrical current to transmit information on computer chips. It is a basic building block to ultrafast computing.
Manufacturers put considerable efforts into the integration of optical components onto silicon based electronic components. These optical components are grown by epitaxial processes, which is challenging due to the different structures of the materials at play as well as the significantly reduced dimensions.
Attolight’s tools enable these developments through high resolution quality control and fast feedback on the quality of the epitaxial layers.


Materials characterization

A vast number of materials are being investigated and developed for future applications ranging from telecommunications to display technologies and energy production. Attolight’s tools have been used on a number of materials, both emerging and existing. These include silicon, 2D materials (MoS2, graphene, etc.), inorganic functional materials (perovskites, gallium oxide, zinc oxide, etc.), III-V semiconductors (gallium nitride, gallium arsenide, indium phosphide, boron nitride, etc.), and II-VI semiconductors (zinc oxide, cadmium telluride, etc.). Also, CL on biological materials is a field of increasing activity due to its high spatial resolution.

Attolight’s tools help researchers tackle tasks such as measuring fundamental optical end electrical properties, establishing structure-properties relationships. determining defects nature and densities. All these tasks are performed at scales from a few nm to 1 mm with an unprecedented ease-of-use, giving materials scientists maximum flexibility and efficiency to refine synthesis processes or assess new materials for example.

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