The magnetization of bismuth single crystals has been measured in very high magnetic fields up to 340 kG. Along the binary and the bisectrix axes the data (at 1.5 K) show small but significant deviations from linearity, but along the trigonal axis the deviation is much smaller and barely ...
Bismuth sulpho-iodide single crystals were grown from the vapour phase for various temperature gradients. When the temperature gradient was kept at 2° C cm−1 in a horizontal furnace a large polycrystalline boule was obtained. The boule consisted of thick platelets at the top and needles at ...
Thus, at excitation wavelengths from 400 to 1100 nm, the optically active Tl, Pb and Bi centers in crystals have near-IR luminescence bands in a range of 1000–1700 nm. Given that the near-IR bismuth luminescence bands in almost all of the bismuth-doped glasses studied to date are also ...
This work was also supported by the U.S Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357. TEM work was performed in the EPIC/NIFTI/Keck-II facility of the NUANCE Center at Northwestern University. The NUANCE Center is supported by NSF-NSEC, NSF-MRSEC, Keck...
Monte Carlo Calculations of the Optical Coupling Between Bismuth Germanate Crystals and Photomultiplier TubesMonte Carlo Calculations of the Optical Coupling Between Bismuth Germanate Crystals and Photomultiplier TubesPhotomultipliersTomographyBismuth CompoundsGermanatesOptical...
Preliminary results in fabricating planar waveguides in both eulytine and sillenite type bismuth germanate crystals using MeV energy N+ ions were reported by Bányász et al. [18]. Although operation up to the 1.5 μm telecom wavelength was achieved in the BGO waveguides, too, some of the ...
The lower melting point of CuSbS2compared to CuInSe2enables it to act as a sintering aid for thermal processing of CuInSe2solar cell materials. The use of SbCl3in this context is explained in Ref.76. Korzun gives the relevant pseudobinary phase diagram.77Xiang, in work on Cu(In,Ga)Se2...
The XRD showed that the crystals of ferroelectric phase, hexagonal Pb3Bi2(GeO4)3;PBG, were precipitated in the glass matrix and this is the dominant phase in the region of 34.50 mol% PbO : 11.49 mol% Bi2O3 : 54.01 mol% GeO2 on the heat treatment temperature at 527°C. The ...
Perovskite solar cells have shown a rapid increase of performance and overcome the threshold of 20% power conversion efficiency (PCE). The main issues hampering commercialization are the lack of deposition methods for large areas, missing long-term devic
We have studied the effect of point defects on coherent optical phonons and photo-generated carriers in ion-implanted bismuth polycrystalline films and single crystals by means of pump–probe reflectivity technique. The dephasing time of the A 1g phonon decreases monotonically with increasing ion dose...