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Search by tag «Perovskite» 12 results
A group of scientists from ITMO University, including one Master’s and one PhD student, has proposed a new method for quick cooling-down of surfaces using perovskite and light nanoparticles. In the future, this principle can be used to cool nano-lasers in optical chips, increase the life of solar panels, and create smart glass. The article was published in the journal Nanoscale.
A research group from ITMO University has published a review paper on the prospective use of halide perovskite-based materials, which they believe are capable of causing a revolution in nanophotonics. The paper was spoken highly of by the editorial board of Applied Physics Reviews. In this article, the researchers speak to ITMO.NEWS about the unique qualities of perovskites that will allow them to improve the efficiency of solar cells and describe the advantages of the new material over the conventional silicon.
The names of winners of the Presidential Grant contest have been announced. Among them are four ITMO University scientists. ITMO.NEWS talked to the researchers and learned what projects they are going to spend their grants on.
An international research team has developed a new method of synthesizing miniature light sources. It is based on a special laser which produces millions of nanolasers from a perovskite film in a few minutes. Such lasers look like small disks, work at room temperature and have a tunable emission wavelength from 550 to 800 nm. The high speed and good reproducibility of this method make it promising for the industrial production of single nanolasers as well as whole chains. The study was published in ACS Nano.
Using the new method, scientists can synthesize perovskite nanolasers, which combine an optically active medium with a Fabry–Pérot high-Q resonator, in just five minutes. The nanolasers’ simple synthesis process and their unique optical qualities make them highly promising sources of coherent radiation in the development of high-sensitivity optical sensors and ultra-fast data transfer in photonic integrated circuits. Results of this research have been published in ACS Applied Materials & Interfaces.
An international research group improved perovskite solar cells efficiency by using materials with better light absorption properties. For the first time, researchers used silicon nanoparticles. Such nanoparticles can trap light of a broad range of wavelengths near the cell active layer. The particles themselves don’t absorb light and don’t interact with other elements of the battery, thus maintaining its stability. The research was published in Advanced Optical Materials.
Halide perovskites are highly promising in regards to their application in the fields of photovoltaics and optoelectronics, including the development of new devices based on advanced nanophotonics concepts. In 2013, the journal Science included perovskites in its list of top-10 breakthrough technologies. This year, a team of ITMO scientists in collaboration with their colleagues from the University of Texas in Dallas and the Australian National University prepared a review where they studied the optical properties of nanostructured perovskites, answered the question of why fundamental studies of these structures are most important for the development of new optical devices, as well as made predictions about future research in this field. The material was published in a special Hall of Fame issue of Advanced Optical Materials.
Young scientists from ITMO University have developed a new type of nanoscale light sources based on halide perovskites. The nanosources are subwavelength nanoparticles which serve both as emitters and nanoantennas capable of amplifying light emission inherently without need for additional devices. Moreover, perovskites enable tuning of emission spectrum throughout a visible range by varying the composition of the material. This makes the new nanoparticles a promising platform for creating compact optoelectronic devices such as optical chips, light-emitting diodes, or sensors. The results were published in Nano Letters, one of the leading journals on nanophotonics.
In 2016, ITMO's Department of Nanophotonics and Metamaterials received a grant to launch the "Photonics and Optoelectronics of Nanostructured Perovskite Materials" research center. Anvar Zakhidov, a professor from the Texas University in Dallas, collaborates with Sergei Makarov from ITMO's Department of Nanophotonics and Metamaterials as head of its new Laboratory of Hybrid Nanophotonics and Optoelectronics. In an interview with our news portal, the professor spoke about how he got interested in metamaterials, the new technologies for producing perovskite patterns and the laboratory's recent results
Sergei Makarov and Alexander Krasnuk, senior researchers at the Department of Nanophotonics and Metamaterials received the Foundation for Support of Education and Science (Alferov's Foundation) award for their research on non-linear tunable semiconductor and hybrid nanoantennas. According to the jury, their main scientific achievement was the development of a new platform for photonic devices based on dielectric nanoantennas in optical band, as well as the use of femtosecond laser technologies in creation of ultrafast optical nanodevices. In an interview with our newsportal, Sergei Makarov talked about new optical modulators and the work of the recently founded Laboratory of Hybrid Nanophotonics and Optoelectronics.