@article{32bb67322aaf40e387805d6fdc8912af,
title = "Bright excitonic multiplexing mediated by dark exciton transition in two-dimensional TMDCs at room temperature",
abstract = "2D-semiconductors with strong light-matter interaction are attractive materials for integrated and tunable optical devices. Here, we demonstrate room-temperature wavelength multiplexing of the two-primary bright excitonic channels (Ab-, Bb-) in monolayer transition metal dichalcogenides (TMDs) arising from a dark exciton mediated transition. We present how tuning dark excitons via an out-of-plane electric field cedes the system equilibrium from one excitonic channel to the other, encoding the field polarization into wavelength information. In addition, we demonstrate how such exciton multiplexing is dictated by thermal-scattering by performing temperature dependent photoluminescence measurements. Finally, we demonstrate experimentally and theoretically how excitonic mixing can explain preferable decay through dark states in MoX2 in comparison with WX2 monolayers. Such field polarization-based manipulation of excitonic transitions can pave the way for novel photonic device architectures.",
author = "Shaul Katznelson and Bar Cohn and Shmuel Sufrin and Tomer Amit and Subhrajit Mukherjee and Vladimir Kleiner and Pranab Mohapatra and Avinash Patsha and Ariel Ismach and Sivan Refaely-Abramson and Erez Hasman and Elad Koren",
note = "E. K. gratefully acknowledge the Israel Science Foundation (ISF), grant 1567/18, for financial assistance and the RBNI for the nanofabrication facilities. E. K. thanks the Taub fellowship for leadership in science and technology, supported by the Taub Foundation and the Alon fellowship. E. H. gratefully acknowledge the Israel Science Foundation (ISF), the US Air Force Office of Scientific Research (FA9550-18-1-0208) through their program on Photonic Metamaterials and the Israel Ministry of Science, Technology and Space. S. R. A. acknowledges support from the Israel Science Foundation (ISF) Grant No. 1208/19 and an Alon Fellowship. P. K. M. and A. I. acknowledge the generous support from the Israel Science Foundation, projects # 2549/17 and 2171/17. This research used computational resources of the National Energy Research Scientific Computing Center (NERSC). This research used computational resources of the National Energy Research Scientific Computing Center (NERSC) and of the ChemFarm Computational Cluster at the Weizmann Institute. Author contributions S. K. B. C. and E.K. conceived the experimental concept. S.K. and S.M. performed the experimental work. B. C. and S. S. performed optical calculations. P. M. and A. P. performed CVD growth of 2D samples. S. R. A. and T. A. performed the ab initio calculations. V. K., A. I., S. R. A., E. H. and E. K. supervised the work. All authors participated in the data analysis and in the writing of the manuscript.",
year = "2022",
month = mar,
day = "7",
doi = "10.1039/d1mh01186c",
language = "الإنجليزيّة",
volume = "9",
pages = "1089--1098",
journal = "Materials Horizons",
issn = "2051-6347",
publisher = "Royal Society of Chemistry",
number = "3",
}