Surface plasmons (SPs) are coherent oscillations of conduction electrons on a metal surface excited by electromagnetic radiation at a metal -dielectric interface. The growing field of research on such light -metal interactions is known as ‘plasmonics’. 1-3 This branch of research has attracted much attention due to its potential applications in miniaturized optical devices, sensors, and photonic circuits as well as in medical diagnostics and therapeutics. 4-8

Nanostructured plasmonic sensors.

The chemical and structural analysis of graphene oxide with different degrees of oxidation

Using vacuum process, we fabricated Cu2ZnSnS4 solar cells with 8.4% efficiency, a number independently certified by an external, accredited laboratory. This is the highest efficiency reported for pure sulfide Cu2ZnSnS4 prepared by any method. Consistent with literature, the optimal composition is Cu-poor and Zn-rich despite the precipitation of secondary phases (e.g., ZnS). Despite a very thin absorber thickness (~600 nm), a reasonably good short-circuit current was obtained. Time-resolved photoluminescence measurements suggest a minority carrier-diffusion length on the order of several hundreds of nanometers and relatively good collection of photo-carriers across the entire absorber thickness. Copyright © 2011 John Wiley & Sons, Ltd.

Thin film solar cell with 8.4% power conversion efficiency using an earth‐abundant Cu2ZnSnS4 absorber

Lanthanide Nanoparticles: From Design toward Bioimaging and Therapy

Charge carrier recombination in organic solar cells

We present results of the optical characterization of silicon photonic crystal waveguides and microcavities that are completely buried in a silicon dioxide cladding and are fabricated by deep ultraviolet (UV) lithography. The advantages of buried waveguides and deep UV lithography are discussed. Transmission spectra and loss factors for photonic crystal waveguides, as well as quality factors for resonant microcavities, are obtained. The observed characteristics are in good agreement with three-dimensional simulations.

/pdf/characterization-of-buried-photonic-crystal-waveguides-and-58mtcj2b87.pdf

Characterization of buried photonic crystal waveguides and microcavities fabricated by deep ultraviolet lithography

/pdf/characterization-of-buried-photonic-crystal-waveguides-and-2pkhsbs1m7.pdf

P. Lyan

Papers

Characterization of buried photonic crystal waveguides and microcavities fabricated by deep ultraviolet lithography

Characterization of buried photonic crystal waveguides and microcavities fabricated by deep ultraviolet lithography