Broadband Finite‐Difference Time‐Domain Modeling of Plasmonic Organic Photovoltaics |
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| Authors: | Kyung‐Young Jung Woo‐Jun Yoon Yong Bae Park Paul R Berger Fernando L Teixeira |
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| Affiliation: | 1. Kyung‐Young Jung (corresponding author, kyjung3@hanyang.ac.kr) is with the Department of Electronic Engineering, Hanyang, University, Seoul, Rep. of Korea.;2. Woo‐Jun Yoon (woojun.yoon@gmail.com) was with the Department of Electrical and Computer Engineering, The Ohio State University, Columbus, USA and is now with the U.S. Naval Research Laboratory, Washington, USA.;3. Yong Bae Park (yong@ajou.ac.kr) is with Department of Electrical and Computer Engineering, Ajou University, Suwon, Rep. of Korea.;4. Paul R. Berger (berger@ece.osu.edu) is with the Department of Electrical and Computer Engineering and the Department of Physics, The Ohio State University, Columbus, USA.;5. Fernando L. Teixeira (teixeira@ece.osu.edu) is with the Department of Electrical and Computer Engineering, The Ohio State University, Columbus, USA. |
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| Abstract: | We develop accurate finite‐difference time‐domain (FDTD) modeling of polymer bulk heterojunction solar cells containing Ag nanoparticles between the hole‐transporting layer and the transparent conducting oxide‐coated glass substrate in the wavelength range of 300 nm to 800 nm. The Drude dispersion modeling technique is used to model the frequency dispersion behavior of Ag nanoparticles, the hole‐transporting layer, and indium tin oxide. The perfectly matched layer boundary condition is used for the top and bottom regions of the computational domain, and the periodic boundary condition is used for the lateral regions of the same domain. The developed FDTD modeling is employed to investigate the effect of geometrical parameters of Ag nanospheres on electromagnetic fields in devices. Although negative plasmonic effects are observed in the considered device, absorption enhancement can be achieved when favorable geometrical parameters are obtained. |
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| Keywords: | FDTD organic photovoltaics plasmonics |
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