Simultaneous generation of direct- and indirect-gap photoluminescence in multilayer MoS2 bubbles

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Strong Circularly Polarized Photoluminescence from Multilayer MoS2 Through Plasma Driven Direct-Gap Transition

We report circularly polarized photoluminescence spectra taken from few layer MoS2 after treatment with a remotely generated oxygen plasma. Here, the oxygen plasma decouples the individual layers in MoS2 by perturbing the weak interlayer van der Waals forces without damaging the lattice structure. This decoupling causes a transition from an indirect to a direct band gap material, which causes a...

متن کامل

Direct-gap photoluminescence from germanium nanowires

Yoko Kawamura,3 Kevin C. Y. Huang,1 Shruti V. Thombare,1 Shu Hu,1 Marika Gunji,1 Toyofumi Ishikawa,3 Mark L. Brongersma,1,2 Kohei M. Itoh,3 and Paul C. McIntyre1,2,* 1Materials Science and Engineering, Stanford University, Stanford, California 94305 2Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305 3School of Fundamental Science and Technology, Keio Uni...

متن کامل

Emerging photoluminescence in monolayer MoS2.

Novel physical phenomena can emerge in low-dimensional nanomaterials. Bulk MoS(2), a prototypical metal dichalcogenide, is an indirect bandgap semiconductor with negligible photoluminescence. When the MoS(2) crystal is thinned to monolayer, however, a strong photoluminescence emerges, indicating an indirect to direct bandgap transition in this d-electron system. This observation shows that quan...

متن کامل

Strain-induced indirect to direct bandgap transition in multilayer WSe2.

Transition metal dichalcogenides, such as MoS2 and WSe2, have recently gained tremendous interest for electronic and optoelectronic applications. MoS2 and WSe2 monolayers are direct bandgap and show bright photoluminescence (PL), whereas multilayers exhibit much weaker PL due to their indirect optical bandgap. This presents an obstacle for a number of device applications involving light harvest...

متن کامل

Photoluminescence from chemically exfoliated MoS2.

A two-dimensional crystal of molybdenum disulfide (MoS2) monolayer is a photoluminescent direct gap semiconductor in striking contrast to its bulk counterpart. Exfoliation of bulk MoS2 via Li intercalation is an attractive route to large-scale synthesis of monolayer crystals. However, this method results in loss of pristine semiconducting properties of MoS2 due to structural changes that occur ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Physical Review Materials

سال: 2020

ISSN: 2475-9953

DOI: 10.1103/physrevmaterials.4.074006