Significant Enhancement of Circular Polarization in Light Emission through Controlling Helical Pitches of Semiconductor Nanohelices.

ABSTRACT: Circularly polarized light emission (CPLE) can be potentially applied to three-dimensional displays, information storage, and biometry. However, these applications are practically limited by a low purity of circular polarization, i.e., the small optical dissymmetry factor g_CPLE. Herein, glancing angle deposition (GLAD) is performed to produce inorganic nanohelices (NHs) to generate CPLE with large g_CPLE values. CdSe NHs emit red CPLE with g_CPLE = 0.15 at a helical pitch (P) ≈ 570 nm, having a 40-fold amplification of g_CPLE compared to that at P ≈ 160 nm. Ceria NHs emit ultraviolet-blue CPLE with g_CPLE ≈ 0.06 at P ≈ 830 nm, with a 10³-fold amplification compared to that

SUBMITTER: Ni Z 

PROVIDER: S-EPMC10604094 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature