고 효율의 웨어러블 고분자 태양전지를 위한 LSPR 효과 분석

Analysis of Localized Surface Plasmon Resonance Effects for High-efficiency Wearable Polymer Solar Cell

Textile-based wearable electronics are being developed as the next generation of electronics to provide greater user convenience and features. The growing demand for wearable electronics has accelerated the development of related materials and fabrication technologies. Among these components, wearable polymer solar cells(PSCs) are widely considered to be essential to the practical use of wearable electronics because they can supply portable electric power to operate the electronic systems without the need for a supplementary power source. So, there have been numerous efforts to enhance the PCE of PSCs. Several research groups have attempted to improve the efficiency of inorganic and organic photovoltaic devices by using metal nanoparticles (NPs) with localized surface plasmon resonance (LSPR). LSPR is charge density oscillation localized by noble metallic NPs and can be excited by direct light illumination. When LSPR is excited, strongly localized electromagnetic field enhancement in close vicinity to the metal NPs is induced. By applying the metal NPs to PSC devices, the LSPR-induced enhanced local field increases the optical absorption. We investigated the LSPR effects of plasmonic PSC device by simulating with a finite difference time domain (FDTD) method to explain the enhancement of the light absorption of the plasmonic PSC device.