Hostname: page-component-78c5997874-t5tsf Total loading time: 0 Render date: 2024-11-14T05:16:58.075Z Has data issue: false hasContentIssue false
  • English
  • Français

A Study of a-Si:H/a-SiGe:H Tandem Solar Cells and Modules

Published online by Cambridge University Press:  16 February 2011

Yuan-Min Li ,
L. Yang ,
M.S. Bennett ,
L. Chen ,
F. Jackson ,
K. Rajan  and
R.R. Arya
Yuan-Min Li
Affiliation:
Solarex Corporation, Thin Film Division, 826 Newtown-Yardley Road, Newtown, Pennsylvania, 18940
L. Yang
Affiliation:
Solarex Corporation, Thin Film Division, 826 Newtown-Yardley Road, Newtown, Pennsylvania, 18940
M.S. Bennett
Affiliation:
Solarex Corporation, Thin Film Division, 826 Newtown-Yardley Road, Newtown, Pennsylvania, 18940
L. Chen
Affiliation:
Solarex Corporation, Thin Film Division, 826 Newtown-Yardley Road, Newtown, Pennsylvania, 18940
F. Jackson
Affiliation:
Solarex Corporation, Thin Film Division, 826 Newtown-Yardley Road, Newtown, Pennsylvania, 18940
K. Rajan
Affiliation:
Solarex Corporation, Thin Film Division, 826 Newtown-Yardley Road, Newtown, Pennsylvania, 18940
R.R. Arya
Affiliation:
Solarex Corporation, Thin Film Division, 826 Newtown-Yardley Road, Newtown, Pennsylvania, 18940
Get access

Abstract

We report a study of a-Si:H/a-SiGe:H dual-bandgap p-i-n type tandem solar cells and Modules. Refined bandgap grading in the a-SiGe:H bottom cell results in higher Jsc (higher red response) without loss in FF or Voc. IMprovements in the tunnel junction consisting of doped widegap a-SiC:H and μC-Si lead to higher FF and lower optical loss. Undoped widegap a-SiC:H is used as interface layers in the top junction. Initial conversion efficiencies of 11.4% and 10.5% have been obtained for small-area cells and one-square-foot modules, respectively. The double junction cells and modules exhibit good stability and saturation of light-induced degradation, showing only ∼15% decrease in conversion efficiency after more than 1000 hours of simulated AM1.5 illumination. The stabilized efficiencies are 9.6% and 9.1%, respectively, for small area cell and large area Module. We also present some findings from the computer simulations of multijunction solar cell performance using a simple lump-circuit device Model.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 336: Symposium A – Amorphous Silicon Technology - 1994 , 1994 , 723
Copyright
Copyright © Materials Research Society 1994

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Arya, R.R., Yang, L., Bennett, M., Newton, J., Li, Y.-M., Fieselmann, B., Chen, L., Rajan, K., Wood, G., Poplawski, C., and Wilczynski, A., Proc. 23rd IEEE PVSC, 790, IEEE, NY (1993).Google Scholar
2. Guha, S., Yang, J., Banerjee, A., Glatfelter, T., Hoffman, K., and Xu, X., Technical Digest of the inn. PVSEC-7, p. 43 (Nagoya, Japan, Nov. 22–26, 1993).Google Scholar
3. Maruyama, E., Yoshimine, Y., Terakawa, A., Sayama, K., Ninoraiya, K., Hishikawa, Y., Tarui, H., Tsuda, S., Nakano, S., and Kuwano, Y., Mat. Res. Soc. Symp. Proc. 297, 821 (1993).Google Scholar
4. Li, Y.-M., Mat. Res. Soc. Symp. Proc. Vol. 297, 803, Mat. Res. Soc, Pittsburgh, PA (1993).Google Scholar
5. Yang, L., Chen, L., Wiedeman, S., and Catalano, A., Mat. Res. Soc. Symp. Proc. 283, 463 (1993).Google Scholar