We show the laboratory "Advanced Nanomaterials and Optoelectronic Devices" ITMO University

    On Habré we already conducted a series of small photo tours. They showed our laboratory of quantum materials , looked at mechanized hands and manipulators in a robotics laboratory, and looked into our thematic DIY-coworking (Fablab) .

    Today we tell you what (and what) one of our laboratories at the International Scientific Center for Functional Materials and Optoelectronics Devices is working on. In the photo: X-ray diffractometer DRON-8

    What are they doing here

    The laboratory “Prospective nanomaterials and optoelectronic devices” was opened on the basis of the International Science Center, which is engaged in research of the latest materials, including semiconductors, metals, oxides in the nanostructured state, with the aim of 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 find application in the field of energy-efficient LED lighting and will be in demand in the near future in high-voltage electronics of smart electric networks ( smart grids ).

    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 Physics and Mathematics, leading professor and dean of the Faculty of Laser Photonics and Optoelectronics at ITMO University He is the author of more than three hundred scientific publications and the owner of many international scientific grants and awards.


    A DRON-8 X-ray diffractometer from the Russian company Burevestnik (above KDPV) was installed in the laboratory. This is one of the main instruments for analyzing materials.

    It helps characterize the quality of the obtained crystals and heterostructures 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 to characterize, modify and sort LEDs. Let's talk about the first (in the photo below on the left side).

    This is Asymtek S-820 Precision Dispenser. It is an automated system for dispensing viscous liquids. Such a dispenser is indispensable for accurately applying phosphor material to an LED chip in order to achieve the desired glow color.

    The original (by default) white LEDs we are used to are based on chips emitting in the blue range of the visible spectrum of electromagnetic radiation.

    This device (in 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 if you open the blue wings:

    The third device in the general photo is a system for sorting and preparing LEDs for subsequent installation. Based on the measured characteristics, it compiles a passport for the LED. After that, the sorter defines it in one of 256 categories depending on the quality of the semiconductor device (category 1 are the LEDs that do not light, category 256 are those that glow most brightly in the given spectral range).

    Even at our International Science Center, we are engaged in the growth of semiconductor materials and heterostructures. Heterostructures are grown by molecular beam epitaxy using the RIBER MBE 49 facility at Connector-Optics, a partner company.

    To obtain oxide single crystals (which are wide-gap semiconductors) from the melt, we use the NIKA-3 multifunctional growth unit of domestic production. Wide-gap semiconductors can be used in power relays of the future, in high-performance VCSEL vertical lasers, in ultraviolet detectors, etc.


    At the sites of the International Science Center in our laboratory, a variety of fundamental and applied research is carried out.

    For example, together with researchers from the Ufa State Aviation Technical University, we are developing new metal conductors with increased conductivity and high strength. To create them, methods of intense 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 strength characteristics of the material are improved.

    Also, laboratory staff are developing technologies for the manufacture of optoelectronic transceivers based on photonic integrated circuits. Such transceivers will find application in the industry of creating high-performance information transmission / reception systems. To date, a set of instructions is already ready for the manufacture of models of radiation sources and photodetectors. Design documentation for testing them has also been prepared.

    An important laboratory project is devoted to the creation of wide-gap semiconductor materials and nanostructures with a low density of defects. In the future, with the help of developed materials, we will be able to produce energy-saving semiconductor devices that do not yet have analogues in the market.

    Our experts have already developed LEDs that can replace unsafe ultraviolet lamps based on mercury. The value of the manufactured devices is that the power of our ultraviolet LED assemblies is several times higher than the power of individual LEDs - 25 watts versus 3 watts. In the future, the technology will find application in the field of healthcare, water treatment and other fields where ultraviolet is used.

    A group of scientists from 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 is 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 such a new generation of optoelectronic devices. But before the gadgets enter the market, we have to work out the technology of materials production and confirm the safety of the materials received for users.

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