Optical absorption of several nanostructures arrays for silicon solar cells

Xu, Zhaopeng; Qiao, Huiling; Huangfu, Huichao; Li, Xiaowei; Guo, Jingwei; Wang, Haiyan

doi:10.1016/j.optcom.2015.08.069

Cited by 31 publications

(11 citation statements)

References 17 publications

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“…This is an encouraging indicator that high efficiency can be achieved in the nanowire-on-Si architecture [5355]. [5557] According to Fig. 5457, the absorption of cylindrical nanowires and nanocones are higher than the bulk silicon's.…”

Section: Sinw and Sinc Structuresmentioning

confidence: 92%

“…(a) Cylindrical nanowires; (b) nanocones; (c) inverted nanocones [57] Different structures: (a) bulk silicon; (b) cylindrical nanowires; (c) nanocones; (d) inverted nanocones[57] Simulation results of absorption distribution for different structures at the wavelength range of 400-800 nm[57] …”

mentioning

confidence: 99%

“…The schematic diagram of structures: (a) SiNW; (b) SiNC[5456] Xu et al[5557] analysed the optical absorption of silicon cylindrical nanowires, nanocones and inverted nanocones in order to enhance the efficiency and decrease the cost of solar cells. The schematically diagram of three silicon nanostructures is given inFig.…”

mentioning

confidence: 99%

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State-of-the-art review of 3DPV technology: Structures and models

Cui

Zhu

Zoras

et al. 2019

Energy Conversion and Management

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Increasing energy conversion efficiency from sunlight to power is one of the key solutions for the world's energy shortage and greenhouse gas reduction, but the conventional flat photovoltaic module without sun tracking mechanism has the low sunlight energy collection ability. This paper presents the state-of-the-art three-dimensional photovoltaic (3DPV) technology with high photovoltaic energy conversion efficiency, which is able to absorb off-peak sunlight and reflected light more effectively, thereby it can generate more power. At first, this paper is to catalogue and critique different 3DPV structures and models, as well as assess their characteristics. Afterwards, the main influence factors on the 3DPV structures and models including shape, height and spacing of the solar cells, latitude of the installation, optimal device design and shadow cast, are reviewed. Finally, the challenges and future technological developments of 3DPV structures and models are highlighted. This study demonstrated that the 3DPV technology can increase the captured sunlight approximately 15-30% in comparison with the conventional flat PV technology.

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Section: Sinw and Sinc Structuresmentioning

confidence: 92%

mentioning

confidence: 99%

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State-of-the-art review of 3DPV technology: Structures and models

Cui

Zhu

Zoras

et al. 2019

Energy Conversion and Management

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“…Nanostructured surfaces have been proven to form efficient antireflection interfaces [14][15][16][17], and have been widely applied in the field of solar energy. Therefore, it is expected that larger modulation depth can be achieved by a nanostructure-based optical THz modulator in comparison to a bare silicon-based modulator.…”

Section: Introductionmentioning

confidence: 99%

An Optically Tunable THz Modulator Based on Nanostructures of Silicon Substrates

Liu

Wei

et al. 2020

Sensors

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Nanostructures can induce light multireflection, enabling strong light absorption and efficient photocarrier generation. In this work, silicon nanostructures, including nanocylinders, nanotips, and nanoholes, were proposed as all-optical broadband THz modulators. The modulation properties of these modulators were simulated and compared with finite element method calculations. It is interesting to note that the light reflectance values from all nanostructure were greatly suppressed, showing values of 26.22%, 21.04%, and 0.63% for nanocylinder, nanohole, and nanotip structures, respectively, at 2 THz. The calculated results show that under 808 nm illumination light, the best modulation performance is achieved in the nanotip modulator, which displays a modulation depth of 91.63% with a pumping power of 60 mW/mm2 at 2 THz. However, under shorter illumination wavelengths, such as 532 nm, the modulation performance for all modulators deteriorates and the best performance is found with the nanohole-based modulator rather than the nanotip-based one. To further clarify the effects of the nanostructure and wavelength on the THz modulation, a graded index layer model was established and the simulation results were explained. This work may provide a further theoretical guide for the design of optically tunable broadband THz modulators.

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“…In the study of Yahia Makableh et al optical properties of six different shapes of zinc oxide (ZnO) nanostructures were investigated, in those geometries, rods and hexagonal shapes have less reflectivity over a wide wavelength range [16]. In the papers of Zhaopeng Xu et al the optical absorption of three nanostructures was calculated respectively within the visible solar spectrum and the results reveal that the nanocones have the highest average absorption [17]. The work of Hao Lin et al revealed that the optical properties of nanostructures are primarily affected by geometrical factors such as structural spacing, material fill ratio, and aspect ratio [18].…”

Section: Introductionmentioning

confidence: 99%

The effect of geometry parameters on light harvesting performance of GaN nanostructure arrays—a numerical investigation and simulation

Zhangyang

Liu

et al. 2019

Mater. Res. Express

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In this paper, COMSOL Multiphysics Commercial Package software is used to simulate the models of two kinds of GaN nanostructure arrays, and to study how the geometric structure and periodicity of arrays affect the optical properties of GaN nanostructures. By analyzing the schematic diagram of electric field distribution and absorption curves of GaN nanostructure arrays, we concluded that the absorptivity is a decreasing function of periodicity in non-homogenous shaped nanostructures. In addition, a gentle change in geometric structure or having a lower effective refraction index on the incident side of the light are more conducive to enhancing the light absorption ability of GaN nanostructure arrays. Simulation experiments on GaN nanostructures will provide some references for the structural design of photocathodes, which will help UV detectors to achieve efficient light absorption.Nomenclature

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Optical absorption of several nanostructures arrays for silicon solar cells

Cited by 31 publications

References 17 publications

State-of-the-art review of 3DPV technology: Structures and models

State-of-the-art review of 3DPV technology: Structures and models

An Optically Tunable THz Modulator Based on Nanostructures of Silicon Substrates

The effect of geometry parameters on light harvesting performance of GaN nanostructure arrays—a numerical investigation and simulation

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