Minimizing reflection losses from metallic electrodes and enhancing photovoltaic performance using the Si-micrograting solar cell with vertical sidewall electrodes

Yang, Tien-Chung; Lee, Bi‐Shen; Yen, Ta-Jen

doi:10.1063/1.4749838

Cited by 9 publications

(3 citation statements)

References 32 publications

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“…Many modifications were explored to promote the development of Si-based solar cells in order to attain lower fabrication costs. These include structures with micro-gratings which have vertical sidewall emitter contacts [ 5 ], micro-pillars with Cu nanoparticles [ 6 ], nanorods with a high-doped pn-junction in the radial path [ 7 ], and npn microstructure based on high-doped wafers [ 8 , 9 , 10 , 11 ], among other structures [ 12 ]. However, other counterparts are being investigated to achieve an optimum efficiency-to-cost ratio.…”

Section: Introductionmentioning

confidence: 99%

Full Optoelectronic Simulation of Lead-Free Perovskite/Organic Tandem Solar Cells

et al. 2023

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Organic and perovskite semiconductor materials are considered an interesting combination thanks to their similar processing technologies and band gap tunability. Here, we present the design and analysis of perovskite/organic tandem solar cells (TSCs) by using a full optoelectronic simulator (SETFOS). A wide band gap lead-free ASnI2Br perovskite top subcell is utilized in conjunction with a narrow band gap DPPEZnP-TBO:PC61BM heterojunction organic bottom subcell to form the tandem configuration. The top and bottom cells were designed according to previous experimental work keeping the same materials and physical parameters. The calibration of the two cells regarding simulation and experimental data shows very good agreement, implying the validation of the simulation process. Accordingly, the two cells are combined to develop a 2T tandem cell. Further, upon optimizing the thickness of the front and rear subcells, a current matching condition is satisfied for which the proposed perovskite/organic TSC achieves an efficiency of 13.32%, Jsc of 13.74 mA/cm2, and Voc of 1.486 V. On the other hand, when optimizing the tandem by utilizing full optoelectronic simulation, the tandem shows a higher efficiency of about 14%, although it achieves a decreased Jsc of 12.27 mA/cm2. The study shows that the efficiency can be further improved when concurrently optimizing the various tandem layers by global optimization routines. Furthermore, the impact of defects is demonstrated to highlight other possible routes to improve efficiency. The current simulation study can provide a physical understanding and potential directions for further efficiency improvement for lead-free perovskite/organic TSC.

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Section: Introductionmentioning

confidence: 99%

Full Optoelectronic Simulation of Lead-Free Perovskite/Organic Tandem Solar Cells

et al. 2023

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“…More than 4% of incident light reflects back from a single air -glass interface [1]. Many important engineering applications, such as solar panels, require minimizing reflection loss [2][3][4]. Antireflection coatings are designed and fabricated for this purpose.…”

Section: Introduction*mentioning

confidence: 99%

Structures and Optical Properties of Anodic Aluminum Oxide Thin Films

Fan

Galipeau

Ghimire

et al. 2014

J. Coat. Sci. Technol.

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Low refractive index materials (n<1.3) are not common in nature. However, they are essential for antireflection coatings. In this study porous anodic aluminum oxide (AAO) on glass substrate was fabricated by electrochemical oxidation and subsequent etching. The pore size was modulated from less than 80 nm to more than 250 nm. The pore depth was controlled by electrochemical anodization and/or chemical etching time. It is challenging to effectively quantify the pore structures and the optical properties of such porous materials. Using spectroscopic ellipsometry, the authors showed that the AAO materials had tunable refractive index from 1.25 to 1.40, which is ideal for antireflection coating on glass (n=1.54). In addition, quantitative information on the AAO film porosity, profile structure, film thickness, dielectric constants, and roughness was also derived from the ellipsometry analysis. It was shown that the as-fabricated AAO film included trace amount of residual metal aluminum with an effective thickness ~0.28 nm.

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“…Recently, silicon nanostructure (SNS)-based solar cells have attracted considerable interest because of their excellent anti-reflection properties [1][2][3][4][5][6]. Multiple scattering incidents in these solar cells result in strong lighttrapping properties which, in turn, result in near-zero optical reflection [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Efficiency improvement of silicon nanostructure-based solar cells

Huang

Yang

2013

Nanotechnology

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Solar cells based on a high-efficiency silicon nanostructure (SNS) were developed using a two-step metal-assisted electroless etching (MAEE) technique, phosphorus silicate glass (PSG) doping and screen printing. This process was used to produce solar cells with a silver nitrate (AgNO3) etching solution in different concentrations. Compared to cells produced using the single MAEE technique, SNS-based solar cells produced with the two-step MAEE technique showed an increase in silicon surface coverage of ~181.1% and a decrease in reflectivity of ~144.3%. The performance of the SNS-based solar cells was found to be optimized (~11.86%) in an SNS with a length of ~300 nm, an aspect ratio of ~5, surface coverage of ~84.9% and a reflectivity of ~6.1%. The ~16.8% increase in power conversion efficiency (PCE) for the SNS-based solar cell indicates good potential for mass production.

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Minimizing reflection losses from metallic electrodes and enhancing photovoltaic performance using the Si-micrograting solar cell with vertical sidewall electrodes

Cited by 9 publications

References 32 publications

Full Optoelectronic Simulation of Lead-Free Perovskite/Organic Tandem Solar Cells

Full Optoelectronic Simulation of Lead-Free Perovskite/Organic Tandem Solar Cells

Structures and Optical Properties of Anodic Aluminum Oxide Thin Films

Efficiency improvement of silicon nanostructure-based solar cells

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