Photoluminescence Studies of Li-Doped Si Nanocrystals
We investigate the optical properties of Lidoped Si nanocrystals (both freestanding and matrixembedded), which are potentially an important material for the new generation of lithium‐ion batteries. Our samples contain 10 – 100 Li atoms per one Si nanocrystal and their lattice is slightly expanded. T...
| الحاوية / القاعدة: | Nanomaterials and Nanotechnology |
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| المؤلفون الرئيسيون: | , , , |
| التنسيق: | مقال |
| اللغة: | الإنجليزية |
| منشور في: |
Wiley
2013-08-01
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| الموضوعات: | |
| الوصول للمادة أونلاين: | http://www.intechopen.com/journals/nanomaterials_and_nanotechnology/photoluminescence-studies-of-li-doped-si-nanocrystals |
| الملخص: | We investigate the optical properties of Lidoped
Si nanocrystals (both freestanding and matrixembedded),
which are potentially an important material
for the new generation of lithium‐ion batteries. Our
samples contain 10 – 100 Li atoms per one Si nanocrystal
and their lattice is slightly expanded. The
photoluminescence (PL) spectra of the S‐band of Lidoped
Si nanocrystals are blue‐shifted by ~30nm
compared to the undoped Si nanocrystals and their PL
lifetime is correspondingly shorter. The F‐band emission
is almost unaffected by Li doping. The observed changes
in the PL performance are probably caused by Si lattice
expansion induced by Li insertion. The reported spectral
blue shift is favourable for certain photonic applications. |
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| تدمد: | 1847-9804 |