Skip to main content Accessibility help

Size-Controlled Silicon Quantum Dots Superlattice for Thin-Film Solar Cell Applications

  • Yasuyoshi Kurokawa (a1), Shinsuke Miyajima (a2), Akira Yamada (a3) and Makoto Konagai (a4)


We prepared size-controlled silicon quantum dots superlattices (Si-QDSLs) by thermal annealing of stoichiometric hydrogenated amorphous silicon carbide (a-SiC:H)/silicon rich hydrogenated amorphous silicon carbide (a-Si1+xC:H) multilayers for thin-film solar cell applications. Transmission electron microscope (TEM) observation revealed that the size of silicon quantum dots can be controlled by the thickness of the a-Si1+xC:H layers. It was found that hydrogen plasma treatment (HPT) significantly enhanced the photoluminescence (PL) of the Si-QDSLs. From the results of the PL measurement, the bandgap of the Si-QDSLs can be controlled from 1.1 eV to 1.6 eV by varying the diameter of silicon quantum dots. ESR measurement indicated that HPT reduced the defect density in a Si-QDSL from 1.83 ×1019 to 1.67 sup1018 cm-3.



Hide All
1 Conibeer, G. Green, M. A. Corkish, R. Cho, Y.-H, Cho, E.-C, Jiang, C.-W, Fangsuwannarak, T. Pink, E. Huang, Y. Puzzer, T. Trupke, T. Richards, B. Shalav, A. and Lin, K.-L., Thin Solid Films 511, 654 (2006).
2 Beard, M. C. Knutsen, K. P. Yu, P. Luther, J. M. Song, Q. Metzger, W. K. Ellingson, R. J. and Nozik, A. J. Nano Letters 7, 2506 (2007).
3 Green, M. A. Tech. Dig. of the 15th International Photovoltaic Science and Engineering Conference, (Shanghai, 2005), p. 7.
4 Hanna, M. C. and Nozik, A. J. J. Appl. Phys. 100, 074510 (2006).
5 Zacharias, M. Heitmann, J. Scholz, R. Kahler, U. Schmidt, M. and Bläsing, J., Appl. Phys. Lett. 80, 661 (2002).10.1063/1.1433906
6 Kurokawa, Y. Miyajima, S. Yamada, Y. and Konagai, M.: Jpn. J. Appl. Phys. 45, L1064 (2006).
7 Song, D. Cho, E.-C., Cho, Y.-H., Conibeer, G. Huang, Y. Huang, S. and Green, M. A. Thin Solid Films 516, 3824 (2008).10.1016/j.tsf.2007.06.150
8 Jiang, C. and Green, M. A. J. Appl. Phys. 99, 114902 (2006).
9 Kurokawa, Y. Tomita, S. Miyajima, S. Yamada, Y. and Konagai, M. Jpn. J. Appl. Phys. 46, L833 (2007).
10 Zhang, L. Chen, K. Wang, L. Li, W. Xu, J. Huang, X. and Chen, K. J. Phys.: Condens. Matter 14, 10083 (2002).
11 Campbell, I. H. and Fauchet, P. M. Solid State Commun. 58, 739 (1986).
12 Éfros, Al. L. and Éfros, A. L., Sov. Phys. Semicond. 16, 772 (1981).
13 Brus, L. E. J. Lumin. 31, 381 (1984).
14 Kayanuma, Y. Phys. Rev. B 38, 9797 (1988).
15 Shiba, K. Nakagawa, K. Ikeda, M. Kohno, A. Miyazaki, S. and Hirose, M. Jpn. J. Appl. Phys. 36, L1279 (1997).
16 Garrido, B. López, M., González, O., Pérez-Rodríguez, A., and Morante, J. R. Appl. Phys. Lett., 77, 3143 (2000).
17 Trwoga, P. F. Kenyon, A. J. and Pitt, C. W. J. Appl. Phys. 83, 3789 (1998).
18 Wieringen, A. Van, and Warmholtz, N. Physica 22, 849 (1956).10.1016/S0031-8914(56)90039-8
19 Schmidt, H. Borchardt, G. Geckle, U. Bruns, M. and Baumann, H. J. Phys.: Condens. Matter 18, 5363 (2006).



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