| 초록 |
Cu (In,Ga)Se2 (CIGSe) nanoparticles were synthesized by a “greener” approach without using any highly toxic hydrazine or ethylenediamine by sonochemical method. We used only ethanol as solvent to dissolve metal nitrate precursors. Though a reducing agent must be involved, it is substantially much less toxic compared to another reported sonochemical and solvothermal procedures. Moreover, all the reaction steps were carried out at room temperature under ambient conditions and did not include any organic stabilizers as act as insulators in final devices. Thus, the developed method herein is greener and economical. The “as prepared” products were characterized by XRD, EDS, SEM, TEM. The results show that formation of CuIn0.4Ga0.6Se2 with particle size in the range ~10 - 40 nm with tetragonal structure. However, CuxSe still appears as impurities in the synthesized CIGSe nanoparticles. Further investigation is aiming to eliminate these impurities with a control over the CIGSe product stoichiometry is under progress |
