Efficient Visible Photoluminescence from Carbon Nanotubes in Zeolite Templates
نویسندگان
چکیده
017402-1 We have found strong visible photoluminescence (PL) from 0.4 nm carbon nanotubes embedded in the ordered channels of a zeolite crystal matrix. The PL exhibits a broad emission band with an efficiency of 1%–5%. Strong polarization dependence is observed both on the excitation and emission, indicating a preferential optical dipole along the axis of carbon nanotubes. By correlating with the absorption and Raman spectra, we identify 3; 3 and 4; 2 tubes to be responsible for the PL peaks at 2:6 and 1:7 eV, respectively.
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تاریخ انتشار 2004