서강대학교

초록/요약

The use of the Y2O3:Eu3+ nanocrystal thin film in the perovskite solar cell en-ables to improve the light harvesting and the stability of the perovskite and dye molecules from UV light. By converting UV light to visible light, the CH3NH3PbI3 can generate more electron-hole pairs and it brings the increase of the short-circuit current (Jsc). Furthermore, this spectral conversion film in front of the solar cell can extremely enhance the lifetime of the solar cell by blocking UV light and it defined by long term stability measurement and interpretation of exponential decay curve. To enhance the visible light emission intensity by surface plasmon effect, we fabricated the hybrid layered structure thin films composed of the Y2O3:Eu3+ phosphor and Au nanoparticles. The overall solar to electric power conversion efficiency (PCE) was increased from 15.16 % to 16.06 % by adding the spectral converting hybrid thin films of Y2O3:Eu3+ phos-phor and Au nanoparticles even with decreased optical transmittance