Evidence of indirect gap in monolayer WSe2 - Nature
2017年10月13日 · Monolayer transition metal dichalcogenides, such as MoS 2 and WSe 2, have been known as direct gap semiconductors and emerged as new optically active materials for …
Probing the origin of excitonic states in monolayer WSe2
2016年3月4日 · Here, we experimentally probed the dynamics of excitonic states in monolayer WSe 2 by investigating the temperature and polarization dependent photoluminescence (PL) …
Efficient phonon cascades in WSe2 monolayers - Nature
2021年1月22日 · Here we measure light scattering and emission in tungsten diselenide monolayers close to the laser excitation energy (down to ~0.6 meV). We reveal a series of …
Synthetic WSe2 monolayers with high photoluminescence quantum yield
2019年1月2日 · In this work, we demonstrate synthetic tungsten diselenide (WSe 2) monolayers with PL QY exceeding that of exfoliated crystals by over an order of magnitude. PL QY of …
Giant Photoluminescence Enhancement of Monolayer WSe2 …
2024年4月23日 · Here, we report up to 18000-fold photoluminescence (PL) enhancement in a monolayer WSe 2-coupled plasmonic nanocavity. A spectroscopy-assisted nanomanipulation …
Edge‐Passivated Monolayer WSe2 Nanoribbon Transistors
2024年7月18日 · In this article, we report a facile edge passivation method for monolayer WSe 2 nanoribbon p-FETs, achieving up to two orders of magnitude enhancement in the on-state …
Large-Area Synthesis of Highly Crystalline WSe2 Monolayers and …
2013年12月14日 · Here we report that the introduction of hydrogen in the reaction chamber helps to activate the selenization of WO 3, where large-size WSe 2 monolayer flakes or thin films …
Epitaxial growth of a monolayer WSe2-MoS2 lateral p-n ... - Science
2015年7月31日 · We report the two-step epitaxial growth of lateral WSe 2 -MoS 2 heterojunction, where the edge of WSe 2 induces the epitaxial MoS 2 growth despite a large lattice mismatch. …
Chemical Vapor Deposition Growth of Monolayer WSe2 with …
2015年5月22日 · Here, we report systematical studies on ambient pressure chemical vapor deposition (CVD) growth of monolayer and few layer WSe 2 flakes directly on silica substrates. …
Dissociation of two-dimensional excitons in monolayer WSe 2
2018年4月24日 · Here, we identify the main exciton dissociation mechanism through time and spectrally resolved photocurrent measurements in a monolayer WSe 2 p – n junction. We find …