Show laboratory "Advanced nanomaterials and optoelectronic devices" ITMO University
On Habré we have already conducted a whole series of small photo tours. They showed our laboratory of quantum materials , looked at mechanized arms and manipulators in the robotics laboratory and looked into our thematic DIY co-working (Fablab) .
Today, we tell what (and what) one of our laboratories of the International Scientific Center for Functional Materials and Optoelectronics Devices works on.
In the photo: X-ray diffractometer DRON-8
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Laboratory "Advanced nanomaterials and optoelectronic devices" is open on the basis of the International Scientific Center, which is engaged in research of new materials, including semiconductors, metals, oxides in a nanostructured state, with a view to their use in devices and devices of optoelectronics.
Students, graduate students and employees of the Laboratory study the properties of nanostructures and create new semiconductor devices for micro- and optoelectronics. The developments are used in the field of energy-efficient LED lighting and will be in demand in the near future in high-voltage electronics of smart grids ( smart grid ).
In the student community, the site for research on Lomonosov Street, house 9 is called the “ Romanov laboratory ”, since both the Laboratory and the Center are headed by A. E. Romanov , doctor of physical and mathematical sciences, leading professor and dean of the Faculty of Laser Photonics and Optoelectronics of the ITMO University , the author of more than three hundred scientific publications and the owner of many international scientific grants and awards.
The laboratory has installed an X-ray diffractometer DRON-8 from the Russian company Burevestnik (higher on KDPV). It is one of the main instruments for the analysis of materials.
It helps to characterize the quality of the crystals and heterostructures obtained by measuring the X-ray diffraction spectra. For heat treatment of the developed thin-film semiconductor structures, we use this domestic installation.
We use modern semi-industrial systems for characterization, modification and sorting of LEDs. Let's tell about the first (in the photo below on the left side).
This is the Asymtek S-820 Precision Dispenser. It is an automated system for dispensing viscous liquids. Such a dispenser is indispensable for accurate deposition of phosphor material on the LED chip in order to achieve the desired color of light.
Initially (by default) the white LEDs we are used to are based on chips emitting in the blue range of the visible spectrum of electromagnetic radiation.
This device (on the general photo in the center) measures the current-voltage and spectral characteristics of LED chips and stores the measured data for a large number of chips in the computer's memory. It is necessary to verify the electrical and optical parameters of the manufactured samples. This is how the installation looks like if you open the blue doors:
The third device in the general photo - the system of sorting and preparation of LEDs for subsequent installation. Based on the measured characteristics, it is a passport to the LED. After that, the sorter defines it in one of 256 categories, depending on the quality of the semiconductor device (category 1 - these are LEDs that do not glow, category 256 - those that glow most brightly in a given spectral range).
Even in our International Science Center, we are engaged in the growth of semiconductor materials and heterostructures. Heterostructures are grown by molecular beam epitaxy at the RIBER MBE 49 installation in the partner company Connector-Optics.
To obtain oxide single crystals (which are wide-gap semiconductors) from the melt, we use the NIKA-3 multifunctional growth facility of domestic production. Wide-gap semiconductors may have applications in future power relays, in high-performance vertical VCSEL lasers, in ultraviolet detectors, etc.
At the sites of the International Science Center in our laboratory a variety of fundamental and applied research is performed.
For example, together with researchers from the Ufa State Aviation Technical University, we are developing new metal conductors with high conductivity and high strength. For their creation methods of intensive plastic deformation are used. The fine-grained structure of the alloy is subjected to heat treatment, redistributing the concentration of impurity atoms in the material. As a result, the conductivity parameters and the strength characteristics of the material are improved.
Also, the laboratory staff are engaged in the development of manufacturing technologies for optoelectronic transceivers on photonic integrated circuits. Such transceivers will find application in the field of creating high-performance information transmission / reception systems. To date, a set of instructions for the manufacture of models of radiation sources and photodetectors is ready. Also prepared design documentation for testing.
An important laboratory project is devoted to the creation of wide-gap semiconductor materials and nanostructures with a low defect density. In the future, with the help of the developed materials, we will be able to produce energy-saving semiconductor devices, which have no analogues on the market yet.
A group of scientists at our International Science Center believes that future optoelectronic devices will use the remarkable properties of nanoscale objects — quantum dots with special optical parameters. Among them - the luminescence or non-thermal glow of the object, which is used in televisions, smartphones and other gadgets with displays.
We are already engaged in the creation of similar optoelectronic devices of the new generation. But, before the gadgets get on the market, we have to work out the production technology of materials and confirm the safety of the materials obtained for users.
Other photo tours of our laboratories:
Today, we tell what (and what) one of our laboratories of the International Scientific Center for Functional Materials and Optoelectronics Devices works on.
In the photo: X-ray diffractometer DRON-8
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What are they doing here
Laboratory "Advanced nanomaterials and optoelectronic devices" is open on the basis of the International Scientific Center, which is engaged in research of new materials, including semiconductors, metals, oxides in a nanostructured state, with a view to their use in devices and devices of optoelectronics.
Students, graduate students and employees of the Laboratory study the properties of nanostructures and create new semiconductor devices for micro- and optoelectronics. The developments are used in the field of energy-efficient LED lighting and will be in demand in the near future in high-voltage electronics of smart grids ( smart grid ).
In the student community, the site for research on Lomonosov Street, house 9 is called the “ Romanov laboratory ”, since both the Laboratory and the Center are headed by A. E. Romanov , doctor of physical and mathematical sciences, leading professor and dean of the Faculty of Laser Photonics and Optoelectronics of the ITMO University , the author of more than three hundred scientific publications and the owner of many international scientific grants and awards.
Equipment
The laboratory has installed an X-ray diffractometer DRON-8 from the Russian company Burevestnik (higher on KDPV). It is one of the main instruments for the analysis of materials.
It helps to characterize the quality of the crystals and heterostructures obtained by measuring the X-ray diffraction spectra. For heat treatment of the developed thin-film semiconductor structures, we use this domestic installation.
We use modern semi-industrial systems for characterization, modification and sorting of LEDs. Let's tell about the first (in the photo below on the left side).
This is the Asymtek S-820 Precision Dispenser. It is an automated system for dispensing viscous liquids. Such a dispenser is indispensable for accurate deposition of phosphor material on the LED chip in order to achieve the desired color of light.
Initially (by default) the white LEDs we are used to are based on chips emitting in the blue range of the visible spectrum of electromagnetic radiation.
This device (on the general photo in the center) measures the current-voltage and spectral characteristics of LED chips and stores the measured data for a large number of chips in the computer's memory. It is necessary to verify the electrical and optical parameters of the manufactured samples. This is how the installation looks like if you open the blue doors:
The third device in the general photo - the system of sorting and preparation of LEDs for subsequent installation. Based on the measured characteristics, it is a passport to the LED. After that, the sorter defines it in one of 256 categories, depending on the quality of the semiconductor device (category 1 - these are LEDs that do not glow, category 256 - those that glow most brightly in a given spectral range).
Even in our International Science Center, we are engaged in the growth of semiconductor materials and heterostructures. Heterostructures are grown by molecular beam epitaxy at the RIBER MBE 49 installation in the partner company Connector-Optics.
To obtain oxide single crystals (which are wide-gap semiconductors) from the melt, we use the NIKA-3 multifunctional growth facility of domestic production. Wide-gap semiconductors may have applications in future power relays, in high-performance vertical VCSEL lasers, in ultraviolet detectors, etc.
Projects
At the sites of the International Science Center in our laboratory a variety of fundamental and applied research is performed.
For example, together with researchers from the Ufa State Aviation Technical University, we are developing new metal conductors with high conductivity and high strength. For their creation methods of intensive plastic deformation are used. The fine-grained structure of the alloy is subjected to heat treatment, redistributing the concentration of impurity atoms in the material. As a result, the conductivity parameters and the strength characteristics of the material are improved.
Also, the laboratory staff are engaged in the development of manufacturing technologies for optoelectronic transceivers on photonic integrated circuits. Such transceivers will find application in the field of creating high-performance information transmission / reception systems. To date, a set of instructions for the manufacture of models of radiation sources and photodetectors is ready. Also prepared design documentation for testing.
An important laboratory project is devoted to the creation of wide-gap semiconductor materials and nanostructures with a low defect density. In the future, with the help of the developed materials, we will be able to produce energy-saving semiconductor devices, which have no analogues on the market yet.
Our experts have already developed LEDs that can replace unsafe mercury-based UV lamps. The value of manufactured devices consists in the fact that the power of our ultraviolet LED assemblies is several times higher than the power of individual LEDs - 25 W against 3 W. In the future, the technology will find application in the field of health care, water treatment and other areas that use ultraviolet light.
A group of scientists at our International Science Center believes that future optoelectronic devices will use the remarkable properties of nanoscale objects — quantum dots with special optical parameters. Among them - the luminescence or non-thermal glow of the object, which is used in televisions, smartphones and other gadgets with displays.
We are already engaged in the creation of similar optoelectronic devices of the new generation. But, before the gadgets get on the market, we have to work out the production technology of materials and confirm the safety of the materials obtained for users.
Other photo tours of our laboratories:
Source: https://habr.com/ru/post/450552/
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