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초록· 키워드

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CIGS nanoparticles were synthesized by a low temperature colloidal route for the absorber layer of photovoltaic devices. The CIGS nanoparticles were prepared by reacting CuI, InI₃, GaI₃ in pyridine with Na₂Se in methanol at 0℃ under inert atmosphere. The reaction products of dark red and yellow colors were turned out to be NaI and CIGS nanoparticles, respectively, by ICP-AES and SEM-EDS analyses. Chalcopyrite structure of the CIGS nanoparticles was confirmed by XRD and TEM diffraction patterns. As compared to the particles from Cu_(0.9)In_(0.8)Ga_(0.3)Se₂ ratio, more uniform and smaller nanoparticles were obtained from Cu_(1.1)In_(0.68)Ga_(0.23)Se_(1.91) stoichiometric ratio. The CIGS nanoparticles were measured to be in the ranges of 5-20 ㎚. However, tube like CIGS particles with length of several ㎛ and width in the range of 100-300 ㎚ were obtained from Cu_(0.9)In_(0.8)Ga_(0.3)Se₂, and Cu_(0.9)In_(0.7)Ga_(0.4)Se₂. The morphological change of the CIGS particles seems to be closely related to the ratio of Cu/ (In+Ga).

목차

Abstract

1. Introduction

2. Experimental

3. Results and Discussions

4. Conclusion

Acknowledgments

References

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UCI(KEPA) : I410-ECN-0101-2009-550-018231441