| 초록 |
Because of eco-friendly nature, AgBiS2 nanocrystals are remarkable material for next generation solar cell. The result from theoretical calculation showed AgBiS2 has water resistant nature. We confirmed this property by measuring X-ray diffraction spectroscopy (XRD) and X-ray photon spectroscopy (XPS). These results supported water resistance of AgBiS2 by showing no changes in crystallinity and chemical bonding energy. To evaluate its water resistance in real device, we fabricated solar cell by using AgBiS2 as the light harvesting layer. In device fabrication, we compared water treated AgBiS2 film with non-treated one. The device including water treated AgBiS2 film showed comparable power conversion efficiency of 4.02 % to that of the control device, 3.80%. Finally, through theoretical and practical experiments, we found that AgBiS2 film have a water-resistance as a candidate for stable next generation solar cell. |
