Skip to main content Accessibility help
×
Home
Hostname: page-component-684bc48f8b-9ddkh Total loading time: 9.996 Render date: 2021-04-11T08:12:01.984Z Has data issue: true Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "metricsAbstractViews": false, "figures": false, "newCiteModal": false, "newCitedByModal": true }

Luminescence Study of Self-Assembled, Silicon Quantum Dots

Published online by Cambridge University Press:  09 August 2011

S. Miyazaki
Affiliation:
Department of Electrical Engineering, Hiroshima University Kagamiyama 1-4-1, Higashi-Hiroshima 739–8527, Japan
K. Shiba
Affiliation:
Department of Electrical Engineering, Hiroshima University Kagamiyama 1-4-1, Higashi-Hiroshima 739–8527, Japan
N. Miyoshi
Affiliation:
Department of Electrical Engineering, Hiroshima University Kagamiyama 1-4-1, Higashi-Hiroshima 739–8527, Japan
K. Etoh
Affiliation:
Department of Electrical Engineering, Hiroshima University Kagamiyama 1-4-1, Higashi-Hiroshima 739–8527, Japan
A. Kohno
Affiliation:
Department of Electrical Engineering, Hiroshima University Kagamiyama 1-4-1, Higashi-Hiroshima 739–8527, Japan
M. Hirose
Affiliation:
Department of Electrical Engineering, Hiroshima University Kagamiyama 1-4-1, Higashi-Hiroshima 739–8527, Japan
Get access

Abstract

Hemispherical silicon quantum dots (QDs) have been self-assembled with an areal density as high as ~2−1011 cm−2 on SiO2/Si(100) and quartz substrates by controlling the early states of low pressure chemical vapor deposition (LPCVD) of pure silane. It is found that, for the thermally-oxidized Si QDs, when the mean Si dot height is decreased from 6.3 nm to 1~2 nm, the photoluminescence (PL) peak energy is increased from 1.2 to 1.4 eV at room temperature while the optical absorption edge determined by photothermal deflection spectroscopy is shifted from 1.9 to 2.5 eV. In addition to the observed Stokes shift as large as 0.7−1.1 eV, a weak temperature dependence of the broad luminescence band and non-exponential luminescence decay with a mean life time of sub-msec even at room temperature suggest that localized, radiative recombination centers existing presumably in the SiO2/Si dot interface are responsible for the efficient PL from the Si QDs. From the change in room temperature PL by SiO2 thinning and removal in a dilute HF solution, it is demonstrated that the surface passivation of Si QDs plays an important role for the efficient light emission at room temperature.

Type
Research Article
Copyright
Copyright © Materials Research Society 1999

Access options

Get access to the full version of this content by using one of the access options below.

References

1. Canham, L. T.: Appl. Phys. Lett. 57 (1990) 1046.CrossRefGoogle Scholar
2. Lehmann, V. and Gösele, U.: Appl. Phys. Lett 58 (1991) 856.CrossRefGoogle Scholar
3. Takagi, H., Ogawa, H., Yamazaki, Y., Ishizaki, A. and Nakagiri, T.: Appl. Phys. Lett. 56 (1990) 2379.CrossRefGoogle Scholar
4. Kanemitsu, Y., Ogawa, T., Shiraishi, K. and Takeda, K.: Phys. Rev. B 48 (1994) 4883.CrossRefGoogle Scholar
5. Yamada, Y., Orii, T., Umezu, I., Takeyama, S. and Yoshida, T.: Jpn. J. Appl. Lett. 35 (1996) 1361.CrossRefGoogle Scholar
6. Nakajima, A., Sugita, Y, Kawamura, K., Tomita, H. and Yokoyama, N.: Jpn. J. Appl. Phys. 35 (1996) L189.CrossRefGoogle Scholar
7. Nakagawa, K., Fukuda, M., Miyazaki, S. and Hirose, M.: Mat. Res. Soc. Symp. Proc. 452 (1997) 234.Google Scholar
8. Fukuda, M., Nakagawa, K., Miyazaki, S. and Hirose, M.: Appl. Phys. Lett. 70 (1997) 2291.CrossRefGoogle Scholar
9. S. Tiwari, Rana, F., Hanafi, H., Hartstein, H., Crabbé, E. F and Chen, K.: Appl. Phys. Lett. 68 (1996) 1377.Google Scholar
10. Guo, L., Leobandung, E. and Chou, S. Y.: Technical Digest of 1996 Intern. Electron Device Meeing (San Francisco, 1996) p. 955.Google Scholar
11. Khono, A., Murakami, Ikeda, M., Miyazaki, S. and Hirose, M.: Extended Abstracts of the 1997 Intern. Conf. on Solid State Devices and Materials (Hamamatsu, 1997) p. 566; Extended Abstracts of the 1998 Intern. Conf. on Solid State Devices and Materials (Hiroshima, 1998) p. 174.Google Scholar
12. Irani, R. R. and Callis, C. F.: Particle Size Measurement: Interpretation and Application (Wiley, New York, 1976) p. 135.Google Scholar
13. Shiba, K., Nakagawa, K., Ikeda, M., Kohno, A., Miyazaki, S. and Hirose, M.: Jpn. J. Appl. Phys. 36 (1997) L1279.CrossRefGoogle Scholar
14. Takagahara, T. and Takeda, K.: Phys. Rev. B 46 (1992) 15578.CrossRefGoogle Scholar

Full text views

Full text views reflects PDF downloads, PDFs sent to Google Drive, Dropbox and Kindle and HTML full text views.

Total number of HTML views: 0
Total number of PDF views: 13 *
View data table for this chart

* Views captured on Cambridge Core between September 2016 - 11th April 2021. This data will be updated every 24 hours.

Send article to Kindle

To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Luminescence Study of Self-Assembled, Silicon Quantum Dots
Available formats
×

Send article to Dropbox

To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

Luminescence Study of Self-Assembled, Silicon Quantum Dots
Available formats
×

Send article to Google Drive

To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

Luminescence Study of Self-Assembled, Silicon Quantum Dots
Available formats
×
×

Reply to: Submit a response


Your details


Conflicting interests

Do you have any conflicting interests? *