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Search for "selenium" in Full Text gives 35 result(s) in Beilstein Journal of Nanotechnology.
Surface-enhanced Raman scattering by colloidal CdSe nanocrystal submonolayers fabricated by the Langmuir–Blodgett technique
Beilstein J. Nanotechnol. 2015, 6, 2388–2395, doi:10.3762/bjnano.6.245
- first can be attributed to scattering by surface optical modes, which was previously well-investigated in CdSe NCs [45][49][50]. The latter may originate from SERS by amorphous selenium formed on the NC surface due to partial photodegradation of CdSe NCs under laser illumination [51][52]. This mode has
The Kirkendall effect and nanoscience: hollow nanospheres and nanotubes
Beilstein J. Nanotechnol. 2015, 6, 1348–1361, doi:10.3762/bjnano.6.139
- interface within the ZnO which, in this case, plays the role of the fast diffusing material. The strategy demonstrated by Li and Penner in 2005 was adopted by many groups for the synthesis of nanotubes by thermal annealing of metal nanowires under a controlled atmosphere such as sulfur, selenium or oxygen
Nanoporous Ge thin film production combining Ge sputtering and dopant implantation
Beilstein J. Nanotechnol. 2015, 6, 336–342, doi:10.3762/bjnano.6.32
- semiconductor. In the present work, the impact of high dose selenium and tellurium (3.5 × 1015 atoms/cm2) implantations on the morphology of polycrystalline Ge thin films is presented, as well as the evolution of the film morphology with thermal annealing conditions (temperature and time). Results and
The distribution and degradation of radiolabeled superparamagnetic iron oxide nanoparticles and quantum dots in mice
Beilstein J. Nanotechnol. 2015, 6, 111–123, doi:10.3762/bjnano.6.11
- include the absorption of intact micelles into enterocytes [31]. 65Zn-labeling of quantum dots For intrinsic labeling, a variety of radionuclides can be incorporated into quantum dots consisting of cadmium, copper, indium, zinc, selenium, and tellurium. Although cadmium is the most relevant, it has no
Review of nanostructured devices for thermoelectric applications
Beilstein J. Nanotechnol. 2014, 5, 1268–1284, doi:10.3762/bjnano.5.141
- be obtained by ternary alloys based on bismuth/tellurium and antimony (typically p-doped) or selenium (typically n-doped) [22][23][24][25]. Values of the Z factor in excess of 4.5 × 10−3 K−1 (ZT in excess of 1.4) at room temperature have been found. A further increase of the Z factor has been
An insight into the mechanism of charge-transfer of hybrid polymer:ternary/quaternary chalcopyrite colloidal nanocrystals
Beilstein J. Nanotechnol. 2014, 5, 1235–1244, doi:10.3762/bjnano.5.137
- . More specifically, where a transparent solution formed by dissolving elemental selenium in tri-n-octylphosphine (TOP) to prepare a TOPSe complex (TOP) was injected into a solution of an equimolar mixture of InCl3 and CuCl2 in TOPO at 250–300 °C under an inert gas atmosphere. A color change from straw
Template based precursor route for the synthesis of CuInSe2 nanorod arrays for potential solar cell applications
Beilstein J. Nanotechnol. 2013, 4, 868–874, doi:10.3762/bjnano.4.98
- Cu:In ratio is approximately 0.95, and the measured selenium deficiency is only around 2 at %. Thus, if the formation of secondary phases occurs, only minor concentrations of indium selenide binaries are possible, which nevertheless has to be confirmed by other analysis methods. The purity of the sample
- structural properties can be thus obtained. The most intensive peak at 172 cm−1 results from the Γ1 chalcopyrite phonon mode (selenium anion vibration) [24]. This signal is commonly observed in CuInSe2 thin films and nanoparticles, and its intensity is associated with the crystalline quality [25][26][27]. A
Effect of deposition temperature on the structural and optical properties of chemically prepared nanocrystalline lead selenide thin films
Beilstein J. Nanotechnol. 2012, 3, 438–443, doi:10.3762/bjnano.3.50
- was prepared by mixing 3 g selenium powder with 30 g anhydrous sodium sulfite in 150 ml of distilled water under constant stirring for 8–10 h at 353 K [15]. To prepare thin films of PbSe, 0.5 M Pb(CH3COO)2 solution was prepared. To this solution was added 1 M TSC solution, and then the pH of the
Self-assembled monolayers and titanium dioxide: From surface patterning to potential applications
Beilstein J. Nanotechnol. 2011, 2, 845–861, doi:10.3762/bjnano.2.94
- , demonstrating the usefulness of using SAM mediators. The same concept of using SAMs as mediators was demonstrated in a system comprising quantum dots and self-assembled-monolayer-coated titanium dioxide. Here, cadmium–sulfur–selenium (CdSSe) quantum dots were physically attached to hydrothermally synthesized
Precursor concentration and temperature controlled formation of polyvinyl alcohol-capped CdSe-quantum dots
Beilstein J. Nanotechnol. 2010, 1, 119–127, doi:10.3762/bjnano.1.14
- prepared in aqueous solution at room temperature, by a simple and environmentally friendly chemical method. The size of the CdSe quantum dots was found to be dependent on the concentrations of the precursors of cadmium and selenium ions, as well as on the aging time and the reaction temperature; all of
- greenish-yellow, or orange-colored, transparent sols were obtained on stirring the reaction mixture, depending on the concentrations of cadmium and selenium precursors, and the reaction temperature. At room temperature (27 °C), a greenish-yellow colored sol, containing very low sized CdSe particles, was
- conditions are due to the presence of excess Na2SO3, which was used in the preparation of a Na2SeSO3 stock solution. The measured pH of the reaction mixture was ~8, or higher, depending on the concentration of selenium precursor used. Nucleation of CdSe takes place inside the three dimensional network of the
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