Gattu Subramanyam Pavithra, Krishnaswamy Narayan, Guha Koushik, Iannacci Jacopo, Ude Eze Nicholas, Muniswamy Venkatesha
Department of Electronics & Communication Engineering, Sai Vidya Institute of Technology, Bangalore 560064, Karnataka, India.
Department of Electrical & Electronics Engineering Sciences, Visvesvaraya Technological University, Belagavi 590018, Karnataka, India.
Micromachines (Basel). 2023 Aug 9;14(8):1574. doi: 10.3390/mi14081574.
This research focuses on enhancing the optical efficacy of organic photovoltaic cells, specifically their optical absorbance and electrical parameters. The absorbance of photons in organic solar cells (OSCs) was studied by incorporating an optical space layer and triple core-shell square-lattice nanostructures. For better chemical and thermal stability, a dielectric-metal-dielectric nanoparticle can be replaced for embedded metallic nanoparticles in the absorption layer. The 3D (finite-difference time-domain) FDTD method was used to analyze the absorption and field distribution in OSCs using 3D model morphology. Firstly, an optimization of thickness of the optical spacer layer was analyzed and secondly, the impact of adding triple core-shell nanostructures at different levels of an OSC were studied. The photovoltaic properties such as short circuit current density, power conversion efficiency, fill factor, V were investigated. The proposed design has demonstrated an improvement of up to 80% in the absorption of light radiation in the photoactive region (donor or acceptor) of OSCs in the wavelength range of 400 nm to 900 nm when compared with that of nanostructures proposed at various layers of OSC.
本研究聚焦于提高有机光伏电池的光学效率，特别是其光吸收和电学参数。通过引入光学间隔层和三核壳方形晶格纳米结构，对有机太阳能电池（OSC）中光子的吸收进行了研究。为了获得更好的化学和热稳定性，在吸收层中可用介电-金属-介电纳米粒子替代嵌入式金属纳米粒子。采用三维（时域有限差分法）FDTD方法，利用三维模型形态分析OSC中的吸收和场分布。首先，分析了光学间隔层厚度的优化，其次，研究了在不同层级的OSC中添加三核壳纳米结构的影响。对短路电流密度、功率转换效率、填充因子、V等光伏特性进行了研究。与在OSC各层提出的纳米结构相比，所提出的设计在400纳米至900纳米波长范围内，使OSC光活性区域（供体或受体）的光辐射吸收提高了80%。
