Plasmon assisted photoinduced surface changes in amorphous chalcogenide layer

Patterning photosensitive layers for optoelectronic applications

“…Istvan Csarnovics 1) , Sandor Molnar 1) , Julia Burunkova 2) , Dmitrii Zhuk 2) , Igor Denisyuk 2) , Attila Bonyar 3) , Csaba Cserhati 1) , Sandor Kokenyesi* 1,2)…”

“…Their applications in optoelectronics are mostly connected with large-scale changes of optical characteristics, their modulation by a number of external influences (electrical, optical, thermal fields) parallel with possible changes of dimensions, structure of the given element (lens, diffractive element, waveguide). Therefore, in the last decade the development of light-sensitive chalcogenide glasses and polymers for photonic applications was directed not only to the creation of new compositions but also to the goal-oriented fabrication of layered nanocomposites like amorphous chalcogenideamorphous chalcogenide, or amorphous chalcogenidemetal [1,2], as well as nanocomposites with gold nanoparticles (GNP) [3,4]. Gold nanoparticles (GNP) and nanocomposite structures with GNP are of special interest because of the presence of plasmon resonance in a visible, green-red spectral range or even at longer wavelengths, depending on the form and dimensions of the GNPs.…”

Photo-induced effects in (Ag3AsS3)0.6(As2S3)0.4 thin films and multilayers with gold nanoparticles

“…In the recent years, surface plasmon resonance (SPR) of gold nanoparticles (GNP) has been widely used to enhance photo-structural changes in chalcogenide binary systems, namely in As-Se (most often As 20 Se 80 because of its maximal photo sensitivity in As-Se system [7]) and As-S (As 2 S 3 ) thin films, which is caused by laser light [10][11][12]. Action of light simultaneously absorbed by chalcogenide layers and surface plasmons of GNP can enhance structural transformations in chalcogenide layers [10], as well as influences on their surfaces [12].…”

“…Action of light simultaneously absorbed by chalcogenide layers and surface plasmons of GNP can enhance structural transformations in chalcogenide layers [10], as well as influences on their surfaces [12]. For optimization, one needs to create a structure with SPR occurring in the spectral range of maximum sensitivity in materials under investigation (e.g., in the range of the optical absorption edge), which can be achieved by variation of the GNP sizes, different compositions of thin film materials and methods used for creation of the structures.…”

Strong exciton-localized plasmon coupling in a-Ge24Se76/AuNP heterostructure

“…The AuNP was formed by Ostwald ripening when the film was annealed at 550 • C for nearly 2 h in air. 17,18 Atomic force microscope (AFM) images of the AuNP in Fig. 1(a) show that the average particle size was 60 nm.…”