Optical signals emitted by the two excitons have various lights, durations, and coherence times. It was challenging to manage intra- and interlayer excitons in nano-scale areas due to the non-homogeneity of semiconductor heterostructures and low luminous performance of interlayer excitons in addition to the diffraction limitation of light.
The group in its previous research had actually proposed innovation for managing excitons in nano-level spaces by pushing semiconductor materials with a nano-scale suggestion. The most substantial benefit of this approach, which combines a photonic nanocavity and a spatial light modulator, is that it can reversibly manage excitons, reducing physical damage to the semiconductor product.
Optical signals given off by the two excitons have different lights, periods, and coherence times. This indicates that selective control of the two optical signals could enable the development of a two-bit exciton transistor. Nevertheless, it was challenging to control intra- and interlayer excitons in nano-scale areas due to the non-homogeneity of semiconductor heterostructures and low luminescent effectiveness of interlayer excitons in addition to the diffraction limit of light.
From left: Hyeongwoo Lee, Professor Kyoung-Duck Park, and Yeonjeong Koo. Credit: POSTECH
The team in its previous research had proposed technology for managing excitons in nano-level areas by pushing semiconductor materials with a nano-scale suggestion. The most significant advantage of this technique, which integrates a spatial light and a photonic nanocavity modulator, is that it can reversibly control excitons, lessening physical damage to the semiconductor material.
Synthetic intelligence (AI) has actually made inroads into our lives more rapidly than we ever expected, and it requires big volumes of information for learning in order to offer great responses that are in fact helpful for users. Yeonjeong Koo, one of the co-first authors of the research paper, said, “The nano-excitonic transistor is expected to play an integral role in understanding an optical computer, which will help process the substantial amounts of information driven by AI technology.
Reference: “Nanocavity-Integrated van der Waals Heterobilayers for Nano-excitonic Transistor” by Yeonjeong Koo, Hyeongwoo Lee, Tatiana Ivanova, Roman S. Savelev, Mihail I. Petrov, Vasily Kravtsov and Kyoung-Duck Park, 1 March 2023, ACS Nano.DOI: 10.1021/ acsnano.2 c11509.
The study was funded by the Samsung Science and Technology Foundation and the National Research Foundation of Korea.
A group of researchers from POSTECH and ITMO University have developed a “nano-excitonic transistor” that attends to the restrictions of existing transistors by utilizing intralayer and interlayer excitons in heterostructure-based semiconductors.
The answer can be found in the transistors on his match, which boost weak signals for processing. Traditional transistors that amplify electrical signals typically result in heat energy loss and slow down signal transfer, compromising performance.
A team of researchers from POSTECH, led by Professor Kyoung-Duck Park and Yeonjeong Koo from the Department of Physics, together with a group from ITMO University in Russia under the guidance of Professor Vasily Kravtsov, have actually collaborated to develop a “nano-excitonic transistor.” This innovative gadget utilizes intralayer and interlayer excitons in heterostructure-based semiconductors, dealing with the restrictions present in traditional transistors.
Research image. Credit: POSTECH
” Excitons” are accountable for light emission of semiconductor products and are essential to developing a next-generation light-emitting aspect with less heat generation and a source of light for quantum infotech due to the totally free conversion between light and product in their electrically neutral states. There are 2 kinds of excitons in a semiconductor heterobilayer, which is a stack of 2 various semiconductor monolayers: the intralayer excitons with horizontal instructions and the interlayer excitons with vertical direction.
