Silicon nanohole based enhanced light absorbers for thin film solar cell applications

IF 2.8 3区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
Rony Das, Badhan Golder, Dip Sarker, Arif Ahammad
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Abstract

We proposed a nanohole-based silicon (Si) absorber structure to enhance the light absorption of thin-film Si solar cells. Our proposed structures exhibited excellent performances harnessing the light-matter interaction phenomenon with a few microns of thick Si (3 µm). We employed the finite-difference time-domain method to analyze the optical properties and solved Poisson’s, continuity, and heat transfer equations to analyze the electrical and thermal properties of our proposed structures, operating in the wavelength range from 300 to 1100 nm. We obtained a maximum average absorption of 72.6% for our proposed square hole Si absorber structure. The power conversion efficiency and short circuit current density were calculated to be 20.74% and 39.91 mA/cm2. We achieved polarization-insensitive performance due to the symmetrical nature of the structure. The temperature of our proposed structure was increased by ∼10 K due to light absorption for different ambient temperatures. Moreover, we found our proposed structure was thermally stable over time. Our proposed structures can enhance the absorption of Si nanostructures, which can be conducive to designing Si-thin solar cells for energy harvesting.
应用于薄膜太阳能电池的基于硅纳米孔的增强型光吸收器
我们提出了一种基于纳米孔的硅吸收器结构,以增强薄膜硅太阳能电池的光吸收能力。我们提出的结构在几微米厚的硅片(3 微米)上就能利用光-物质相互作用现象,表现出卓越的性能。我们采用有限差分时域法分析了光学特性,并求解了泊松方程、连续性方程和传热方程,分析了我们提出的结构在 300 至 1100 纳米波长范围内的电学和热学特性。我们提出的方孔硅吸收器结构的最大平均吸收率为 72.6%。经计算,功率转换效率和短路电流密度分别为 20.74% 和 39.91 mA/cm2。由于结构的对称性,我们实现了对极化不敏感的性能。在不同的环境温度下,由于光吸收,我们提出的结构的温度升高了 10 K。此外,我们还发现我们提出的结构具有长期的热稳定性。我们提出的结构可以增强硅纳米结构的吸收能力,有利于设计用于能量收集的硅-薄太阳能电池。
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来源期刊
Optical Materials Express
Optical Materials Express MATERIALS SCIENCE, MULTIDISCIPLINARY-OPTICS
CiteScore
5.50
自引率
3.60%
发文量
377
审稿时长
1.5 months
期刊介绍: The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optical Materials Express (OMEx), OSA''s open-access, rapid-review journal, primarily emphasizes advances in both conventional and novel optical materials, their properties, theory and modeling, synthesis and fabrication approaches for optics and photonics; how such materials contribute to novel optical behavior; and how they enable new or improved optical devices. The journal covers a full range of topics, including, but not limited to: Artificially engineered optical structures Biomaterials Optical detector materials Optical storage media Materials for integrated optics Nonlinear optical materials Laser materials Metamaterials Nanomaterials Organics and polymers Soft materials IR materials Materials for fiber optics Hybrid technologies Materials for quantum photonics Optical Materials Express considers original research articles, feature issue contributions, invited reviews, and comments on published articles. The Journal also publishes occasional short, timely opinion articles from experts and thought-leaders in the field on current or emerging topic areas that are generating significant interest.
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