发表机构
Bangladesh University of Engineering and Technology; Chittagong University of Engineering and Technology（孟加拉国工程与技术大学; 吉大港工程与技术大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
针对薄膜硅太阳能电池长波吸收弱的问题，提出混合纳米锥-纳米孔结构，通过渐变折射率与多重散射增强光捕获，实现24.42%效率，较纳米孔设计提升17.74%，且热稳定性优异。
AI 中文摘要
薄膜硅太阳能电池由于其有限的光学厚度，在可见光较长波长处表现出较弱的吸收。为克服这一固有局限性，提出了一种混合纳米锥-纳米孔光管理架构，该架构将前表面硅纳米锥与吸收层中嵌入的空气填充纳米孔相结合。纳米锥提供渐变的折射率过渡，抑制前表面反射，而纳米孔通过多次散射和内部反射增强光学限制。使用有限差分时域（FDTD）模拟结合电学器件建模，对结构参数进行了系统优化。在优化的掺杂条件和等温稳态运行下，优化设计产生了34.64 mA cm-2的短路电流密度、0.82 V的开路电压、86.27%的填充因子和24.42%的功率转换效率，相比类似的基于纳米孔的设计提高了17.74%。此外，耦合光电热模拟表明，所提出的混合纳米锥-纳米孔结构在高达45摄氏度的非等温运行下保持其效率的95.21%，展现出优异的热稳定性。这些结果凸显了所提出的混合纳米锥-纳米孔设计作为高效且热稳健的薄膜硅太阳能电池的有效光管理策略的潜力。
英文摘要
Thin-film silicon solar cells exhibit weak absorption at longer wavelengths of visible light due to their limited optical thickness. To overcome this inherent limitation, a hybrid nanocone-nanohole light-management architecture is proposed by integrating front-surface silicon nanocones with embedded air-filled nanoholes in the absorber layer. The nanocones provide a gradual refractive-index transition that suppresses front-surface reflection, while the nanoholes enhance optical confinement through multiple scattering and internal reflection. The structural parameters are systematically optimized using finite-difference time-domain (FDTD) simulations coupled with electrical device modeling. Under optimized doping conditions and isothermal steady-state operation, the optimized design yields a short-circuit current density of 34.64 mA cm-2, an open-circuit voltage of 0.82 V, a fill factor of 86.27%, and a power conversion efficiency of 24.42%, representing a 17.74% improvement over a comparable nanohole-based design. Furthermore, coupled opto-electro-thermal simulations show that the proposed hybrid nanocone-nanohole structure retains 95.21% of its efficiency under non-isothermal operation up to45 degree celsius, demonstrating excellent thermal stability. These results highlight the potential of the proposed hybrid nanocone-nanohole design as an effective light-management strategy for high-efficiency and thermally robust thin-film silicon solar cells.
