Skip to main content Accessibility help

Photoluminescence Mechanism of Silicon Quantum Dots and Wells

  • Y. Kanemitsu (a1) and S. Okamoto (a1)


We discuss the mechanism of efficient photoluminescence (PL) from Si quantum dots and wells. Luminescence properties of SiO2-capped Si nanocrystals are different from those of H-terminated Si nanocrystals, but are very similar to those of Si quantum wells sandwiched by SiO2 layers. The size-dependence of PL properties and resonantly excited PL spectra of SiCb-capped Si dots and wells indicate that excitons are localized near the interface between the crystalline Si core and surface oxide layer, and the strong coupling of electronic and vibrational excitations causes the broad PL spectrum. The exciton localization plays an essential role in the efficient luminescence process in nanoscale Si/SiO2 systems.



Hide All
1.Takagi, H., Ogawa, H., Yamazaki, Y., Ishizaki, A., and Nakagiri, T., Appl. Phys. Lett. 56, 2349 (1990).
2.Maeda, Y., Tsukamoto, N., Yazawa, Y., Kanemitsu, Y., and Masumoto, Y., Appl. Phys. Lett. 59, 3168 (1992).
3.Matsumoto, T., Takahashi, J., Tamaki, T., Futagi, T., Mimura, H., and Kanemitsu, Y., Appl. Phys. Lett. 64, 226 (1994).
4.Kanemitsu, Y., Phys. Rep. 263, 1 (1995).
5.Delerue, C., Lannoo, M., and Allan, G., Phys. Rev. Lett. 76, 3038 (1996);
Hill, N.A. and Whaley, K.B., Phys. Rev. Lett. 76, 3039 (1996).
6.Kanemitsu, Y., Ogawa, T., Shiraishi, K., and Takeda, K., Phys. Rev. B 48, 4883 (1993).
7.Otobe, M., Kanai, T., Ifiiku, T., Yajima, H., and Oda, S., J. Non-cryst. Solids 198–200, 875 (1996).
8.Mimura, H., Matsumoto, T., and Kanemitsu, Y., Mater. Res. Soc. Symp. Proc. 358, 635 (1995).
9.Schuppler, S.Friedman, S.L., Marcus, M.A., Adler, D.L., Xie, Y.H., Ross, R.M., Chabal, Y.J., Harris, T.D., Brus, L.E., Brown, W.L., Chaban, E.E., Szajowski, P.F., Christman, S.B., and Citrin, P.H., Phys. Rev. B 52, 4910 (1995).
10.Kanemitsu, Y., Okamoto, S., Otobe, M., and Oda, S., to be published.
11.Ito, K., Ohyama, S., Uehara, Y., and Ushioda, S., Appl. Phys. Lett. 67, 2536 (1995).
12.Takagahara, T. and Takeda, K., Phys. Rev. B 46, 15578 (1992).
13.Proot, P., Delerue, C., and Allan, G., Appl. Phys. Lett. 61, 1948 (1992).
14.Wang, L.W. and Zunger, A., J. Chem. Phys. 100, 2394 (1994).
15.Kanemitsu, Y., Uto, H., Masumoto, Y., Matsumoto, T., Futagi, T., and Mimura, H., Phys. Rev. B 48, 2827 (1993).
16.Kanemitsu, Y., Shimizu, N., Komoda, T., Hemment, P.L.F., and Sealy, B.J., Phys. Rev. B 54, R14329 (1996).
17.Takahashi, Y., Furuta, T., Ono, Y., Ishiyama, T., and Tabe, M., Jpn. J. Appl. Phys. 34, 950 (1995).
18.Okamoto, S. and Kanemitsu, Y., to be published.
19.Kageshima, H., Surf. Sci. 357/358, 312 (1996).
20.Zhang, S.B. and Zunger, A., Appl. Phys. Lett. 63, 1399 (1993).
21.Lockwood, D.J., Lu, Z.H., and Baribeau, J.M., Phys. Rev. Lett. 76, 539 (1996).
22.Calcott, P.D.J., Nash, K.J., Canham, L.T., Kane, M.J., and Brumhead, D., J. Phys. Condens. Matter. 5, L91 (1993).
23.Kanemitsu, Y., Phys. Rev. B 53, 13515 (1996).
24.Okamoto, S. and Kanemitsu, Y., Phys. Rev. B 54, 16421 (1996).

Related content

Powered by UNSILO

Photoluminescence Mechanism of Silicon Quantum Dots and Wells

  • Y. Kanemitsu (a1) and S. Okamoto (a1)


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed.