Curvature-dependent flexible light emission from layered gallium selenide crystals.

ABSTRACT: Flexible optoelectronics devices play an important role for technological applications of 2D materials because of their bendable, flexible and extended two-dimensional surfaces. In this work, light emission properties of layered gallium selenide (GaSe) crystals with different curvatures have been investigated using bending photoluminescence (BPL) experiments in the curvature range between R ^-1 = 0.00 m^-1 (flat condition) and R ^-1 = 30.28 m^-1. A bendable and rotated sample holder was designed to control the curvature (strain) of the layered sample under upward bending uniformly. The curvature-dependent BPL results clearly show that both bandgaps and BPL intensities of the GaSe are curvature dependent with respect to the bending-radiu

SUBMITTER: Chuang CA 

PROVIDER: S-EPMC9077378 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature