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Recombination activity of small-angle grain boundaries (SA GBs) in multicrystalline silicon (mc-Si) was studied by means of electron-beam-induced current (EBIC) technique. In the as-grown mc-Si, the EBIC contrasts of special Σ and random GBs were weak at both 300 and 100K, whereas those of SA GBs were weak (<3%) at 300K and strong (30–40%) at 100K. In the contaminated mc-Si, SA GBs showed stronger...
Lead iodine nanorod-like particles have been produced for the first time in toluene by addition of NaNO 3 in reaction medium and stabilized by surfactant. They are nanorods with an average length 50 nm and diameter 8 nm. Photoluminescence spectra recorded at 4 K does provide a small blue shift for about ΔE=3.5 meV due to quantum confinement of exciton.
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