111 research outputs found
BAIKAL experiment: status report
We review the present status of the Baikal Neutrino Project and present the
results obtained with the deep underwater neutrino telescope NT-200.Comment: 4 pages, 3 figures. Presented at TAUP 2001 (7th international
workshop on Topics in Astroparticle and Underground Physics), Sep. 2001,
Laboratori Nazionali del Gran Sasso, Assergi, Ital
The Lake Baikal neutrino experiment: selected results
We review the present status of the lake Baikal Neutrino Experiment and
present selected physical results gained with the consequetive stages of the
stepwise increasing detector: from NT-36 to NT-96. Results cover atmospheric
muons, neutrino events, very high energy neutrinos, search for neutrino events
from WIMP annihilation, search for magnetic monopoles and environmental
studies. We also describe an air Cherenkov array developed for the study of
angular resolution of NT-200.Comment: 25 pages, 12 figures. To appear in the Procrrdings of International
Conference on Non-Accelerator New Physics, June 28 - July 3, 1999, Dubna,
Russi
Photoactive Properties of Transport Sol-Gel Layers Based on Strontium Titanate for Perovskite Solar Cells
In this work, we have investigated the photocurrent and spectral sensitivity of the
silicon/SrTiO3:xNb/perovskite structures. The sol–gel method carried out the deposition of undoped
SrTiO3 layers as well as niobium-doped (SrTiO3:Nb) layers at atomic concentrations of 3 and 6% Nb.
The perovskite layer, CH3NH3PbI3_xClx, has been deposited by the vacuum co-evaporation technique. The layers have been characterized by scanning electron microscopy and X-ray diffraction
measurements. The volt–ampere characteristics and spectral sensitivity of the fabricated samples
have been measured under illumination with selective wavelengths of 405, 450, 520, 660, 780, 808, 905,
980, and 1064 nm of laser diodes. We have shown that for different configurations of applied voltage
between silicon, SrTiO3:xNb, and CH3NH3PbI3_xClx, the structures are photosensitive ones with
a variation of photocurrent from microamperes to milliamperes depending on Nb concentration in
SrTiO3, and the highest photocurrent and spectral sensitivity values are observed when a SrTiO3:Nb
layer with 3 at.% of Nb is used. A possible application of the proposed structure with a SrTiO3:Nb
layer for perovskite solar cells and photodetectors is being discussed
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