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CdTe Solar Cell from Sputtering Method

Published online by Cambridge University Press:  13 June 2012

Tara P. Dhakal ,
Lakshmi K. Ganta ,
Dino Ferizovic ,
Surya Rajendran ,
Daniel Vanhart ,
Michael A. Seymour  and
Charles R. Westgate
Tara P. Dhakal
Affiliation:
Center for Autonomous Solar Power, SUNY-Binghamton, Binghamton, NY, USA
Lakshmi K. Ganta
Affiliation:
Center for Autonomous Solar Power, SUNY-Binghamton, Binghamton, NY, USA
Dino Ferizovic
Affiliation:
Department of Physics, University of South Florida, Tampa, FL, USA
Surya Rajendran
Affiliation:
Center for Autonomous Solar Power, SUNY-Binghamton, Binghamton, NY, USA
Daniel Vanhart
Affiliation:
Center for Autonomous Solar Power, SUNY-Binghamton, Binghamton, NY, USA
Michael A. Seymour
Affiliation:
Center for Autonomous Solar Power, SUNY-Binghamton, Binghamton, NY, USA
Charles R. Westgate
Affiliation:
Center for Autonomous Solar Power, SUNY-Binghamton, Binghamton, NY, USA
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Abstract

We report CdTe/CdS solar cell with CdTe layer grown by sputtering method. A controlled etch and anneal process on the sputter-grown CdTe films was performed to increase the average grain size of the film. The process involved dipping the CdTe films in a saturated solution of cadmium chloride (CdCl2) in methanol (2.08 gram in 100 ml) followed by a 30 minute annealing at 400 °C. We performed various experiments on this process by varying the dipping times, drying process and annealing times and analyzed the resultant films using Scanning Electron Microscopy (SEM). We could see a clear increase in grain size from 200 nm to 5 μm after CdCl2 treatment. The process also increased the overall roughness of the sample so that more light is absorbed than reflected. We prepared solar cells using CdTe as p-type layer and CdS as n-type layer. The efficiency of the cell improved from 1.1% to 4.2% after air annealing. The effect of air-annealing is studied by means of quantum efficiency measurement.

Keywords

photovoltaicsputteringthin film
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1447: Symposium V – Nanostructured and Advanced Materials for Solar-Cell Manufacturing , 2012 , mrss12-1447-v03-26
Copyright
Copyright © Materials Research Society 2012

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References

REFERENCES

1. Wu, Xuanzhi, Solar Energy 77, 803 (2004)Google Scholar
2. Shockley, William and Queisser, Hans J., J. Appl. Phys. 32, 510 (1961)Google Scholar
3. Britta, J. and Ferekides, C., Appt. Phys. Lett. 62, 2851 (1993)Google Scholar
4. Romeo, A., Bätzner, D.L., Zogg, H., and Tiwari, A.N., Thin Solid Films 361–362, 420 (2000)Google Scholar
5. Johnson, Daniel R., Thin Solid Films 361–362, 321 (2000)Google Scholar
6. Shao, M., Fischer, A., Grecu, D., Jayamaha, U., Bykov, E., Contreras-Puente, G., Bohn, R. G., and Compaan, A. D., Appl. Phys. Lett. 69, 3045 (1996)Google Scholar
7. Rose, Doug H., Hasoon, Falah S., Dhere, Ramesh G., Albin, Dave S., Ribelin, Rosine M., Li, Xiaonan S., Mahathongdy, Yoxa, Gessert, Tim A. and Sheldon, Pete, Prog. Photovolt: Res. Appl. 7, 331 (1999)Google Scholar
8. Li, Xiaonan, Niles, David W., Hasoon, Falah S., Matson, Richard J., and Sheldon, Peter, J. Vac. Sci. Technol. A 17, 805 (1999)Google Scholar
9. Romeo, N., Bosio, A., Canevari, V., Podesta, A., Solar Energy 77, 795 (2004)Google Scholar
10. Enriquez, Joel Pantoja, Mathew, Xavier, Solar Energy Materials & Solar Cells 81, 363 (2004)Google Scholar
11. Kosyachenko, Leonid, “ Efficiency of Thin-Film CdS/CdTe Solar Cells,” Solar Energy, ed. Rugescu, Radu D. (INTECH, 2010) pp. 105–130 Google Scholar