P3HT:PCBM 층 내 분산 가능한 금속 나노입자의 제조 및이를 포함한 고분자 태양전지 소자의 특성에 관한 연구
Synthesis of Highly Dispersible Metal Nanoparticles in P3HT:PCBM Layers and Their Effects on the Performance of Polymer Solar Cells
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In this study, we prepare polymer solar cells incorporating organic ligand-modified Ag nanoparticles (OAgNPs)highly dispersed in the P3HT:PCBM layer. Ag nanoparticles decorated with water-dispersible ligands (WAgNPs)were also utilized as a control sample. The existence of the ligands on the Ag surface was confirmed by FTIRspectra. Metal nanoparticles with different surface chemistries exhibited different dispersion tendencies. O-AgNPswere highly dispersed even at high concentrations, whereas W-AgNPs exhibited significant aggregation in the polymerlayer. Both dispersion and blending concentration of the Ag nanoparticles in P3HT:PCBM matrix had critical effects onthe device performance as well as light absorption. The significant changes in short-circuit current density (JSC) of thesolar cells seemed to be related to the change in the polymer morphology according to the concentration of AgNPsintroduced. These findings suggested the importance of uniform dispersion of plasmonic metal nanoparticles and theirblending concentration conditions in order to boost the solar cell performance.
Abstract
In this study, we prepare polymer solar cells incorporating organic ligand-modified Ag nanoparticles (OAgNPs)highly dispersed in the P3HT:PCBM layer. Ag nanoparticles decorated with water-dispersible ligands (WAgNPs)were also utilized as a control sample. The existence of the ligands on the Ag surface was confirmed by FTIRspectra. Metal nanoparticles with different surface chemistries exhibited different dispersion tendencies. O-AgNPswere highly dispersed even at high concentrations, whereas W-AgNPs exhibited significant aggregation in the polymerlayer. Both dispersion and blending concentration of the Ag nanoparticles in P3HT:PCBM matrix had critical effects onthe device performance as well as light absorption. The significant changes in short-circuit current density (JSC) of thesolar cells seemed to be related to the change in the polymer morphology according to the concentration of AgNPsintroduced. These findings suggested the importance of uniform dispersion of plasmonic metal nanoparticles and theirblending concentration conditions in order to boost the solar cell performance.
참고문헌 (12)
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