The structure and optical properties of self-forming germanium and silicides nanoparticles on the surface of Si:H thin film

0479226 - FZÚ 2018 RIV VN eng A - Abstract
Stuchlík, Jiří - Stuchlíková, The-Ha - Tien, P.M. - Čermák, Jan - Kupčík, J. - Fajgar, R. - Shklyaev, A.A. - Volodin, V.A. - Purkrt, Adam - Remeš, Zdeněk
The structure and optical properties of self-forming germanium and silicides nanoparticles on the surface of Si:H thin film.
International conference on photonics and applications. Abstracts and programs /9./ (ICPA-9). Ninh Binh City: Vietnam Academy of Science and Technology, 2016 - (Vu, T.)
[The 9th International Conference on Photonics and Applications. 06.11.2016-10.11.2016, Ninh Binh City]
R&D Projects: GA ČR GA13-12386S
Grant - others:AV ČR(CZ) KONNECT-007
Program: Bilaterální spolupráce
Institutional support: RVO:68378271
Keywords : Si:H thin film * self-forming * nanoparticles * absorptance * photoluminescence
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)

The aim of our work is to reveal the mechanism of formation of different semiconductor nanoparticles (NPs) on the surface of the hydrogenated silicon (Si:H) thin layers. Various forms of the silicide NPs are investigated for thermoelectric conversion energy and the Ge NPs formation is studied for optoelectronic applications. A thin layer of Si:H was deposited on different substrates by d chemical deposition (PECVD). The self-forming silicides NPs were realized during evaporation of Magnesium and Calcium, the Ge NPs was performed by molecular beam epitaxy (MBE) at substrate temperatures from 300 to 450 ° C. The NPs self - forming was investigated by SEM, TEM, AFM and Raman spectroscopy. The increase of optical absorption needed for the photovoltaic applications has been confirmed by the photothermal deflection spectroscopy (PDS). The optical and optoelectronic properties in the infrared part of the spectrum were investigated by the photoluminescence and electroluminescence.

Permanent Link: http://hdl.handle.net/11104/0275290