A High-Efficiency HIT Solar Cell With Pillar Texturing

Lin, Jyi-Tsong; Lai, Chien-Chia; Lee, Chung-Tse; Hu, Yu-Yan; Ho, Kon-Yu; Haga, Steve

doi:10.1109/jphotov.2018.2804330

Cited by 23 publications

(8 citation statements)

References 21 publications

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“…The transmittance of the bare SP-ITO and BP-ITO electrodes linearly decreased with the increase in height, which was partially due to the corresponding increase in thickness of the pillar base. The overall transmittance of SP-ITO was higher than that of BP-ITO because the micro-branches blocked approximately 8% of the incident light; similarly, the reflectance of BP-ITO was enhanced due to the increased scattering arising from the branch-like feature 38 . The reflectance was proportional to the height of the bare pillar structures (Fig.…”

Section: Characterization Of the Printed Micro-pillar Electrodesmentioning

confidence: 98%

3D-printed hierarchical pillar array electrodes for high performance semi-artificial photosynthesis

Zhang

Chen

Lawrence

et al. 2021

Preprint

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The re-wiring of photosynthetic bio-machineries to electrodes is a forward-looking semi-artificial route for sustainable bio-electricity and fuel generation. Currently, it is unclear how the bio-material interface can be designed to meet the complex requirements for high bio-photoelectrochemical performance. Here, we developed an aerosol jet printing method for generating hierarchical electrode structures using indium tin oxide nanoparticles. We printed libraries of micropillar array electrodes varying in height and sub-micron surface features and studied the energy/electron transfer processes across the bio-electrode interfaces. When wired to the cyanobacterium Synechocysis sp. PCC 6803, micropillar array electrodes with micro-branches exhibited favourable biocatalyst loading, light utilisation and electron flux output, ultimately almost doubling the photocurrent of state-of-the-art porous structures of the same height. When the micropillars’ heights were increased from 50 to 600 µm, milestone mediated photocurrent densities of 245 µA cm–2 (the closest thus far to theoretical predictions) and external quantum efficiencies of up to 29% could be reached. This study demonstrates how bioenergy from photosynthesis could be more efficiently harnessed in the future and provide new tools for 3D electrode design.

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Section: Characterization Of the Printed Micro-pillar Electrodesmentioning

confidence: 98%

3D-printed hierarchical pillar array electrodes for high performance semi-artificial photosynthesis

Zhang

Chen

Lawrence

et al. 2021

Preprint

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“…Its efficiency was a world record for c-Si solar cells with both side contacts. In 2018, Lin et al [48] investigated the surface texturing influence for high efficiency HIT solar cells by designing various textures and numerically assessed their lighttrapping ability. They found that the pillar shape was the best shape for surface texturing.…”

Section: Hit Cellmentioning

confidence: 99%

From Crystalline to Low-cost Silicon-based Solar Cells: a Review

Okil

Salem

Abdolkader

et al. 2021

Silicon

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Renewable energy has become an auspicious alternative to fossil fuel resources due to its sustainability and renewability. In this respect, Photovoltaics (PV) technology is one of the essential technologies. Today, more than 90 % of the global PV market relies on crystalline silicon (c-Si)-based solar cells. This article reviews the dynamic field of Si-based solar cells from high-cost crystalline to low-cost cells and investigates how to preserve high possible efficiencies while decreasing the cost. First, we discuss the various types of c-Si solar cells with different device architectures and report recent developments. Next, thin-film solar cells with their recent advancements are given. Then, Si nanowires solar cells and their recent results are discussed. Finally, we present the most encouraging tendencies in achieving low-cost solar cells utilizing cheap materials like heavily doped silicon wafers.

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“…However, when comparing the npn structure with the c-Si based solar cell, one has to note that its doping is around 10 18 cm -3 while the typical doping of the c-Si based solar cell is lower than 10 17 cm -3 . It means that the npn structure does not need the costly process of zone refining like the case of the c-Si solar cell [39][40][41]. This is the reason for studying the effect of higher doping on the structure performance to achieve more reduction of its cost while conserving the acceptable efficiency and performance.…”

Section: The Effect Of P + Base Doping Variation On the Npn Micromentioning

confidence: 99%

Investigation of Base High Doping Impact on the npn Solar Cell Microstructure Performance Using Physically Based Analytical Model

2021

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Recently, there is a rapid trend to incorporate low cost solar cells in photovoltaic technology. In this regard, low-cost high-doped Silicon wafers are beneficial; however, the high doping effects encountered in these wafers render their practical use in fabrication. The npn solar cell microstructure has been found to avoid this issue by the proper design of vertical generation and lateral collection of the light generated carriers. We report on the impact of the p + base doping concentration, up to 2×10 19 cm-3 , on the npn microstructure performance to find the most appropriate way for high efficiency. To optimize the structure, a series of design steps has been applied using our previously published analytical model. Before inspecting the high doped base effect, firstly, the n + emitter is optimized. Secondly, the impact of bulk recombination inside the p + base is introduced showing the range of optimum base width (Wp). Then, we investigate thoroughly the impact of base doping levels for different base widths to get the optimum Wp that satisfies maximum efficiency. The results show that for p + base doping concentration ranging from 5×10 17 cm-3 to 2×10 19 cm-3 , the npn microstructure efficiency decreases from 15.9% to 9%, respectively. Although the efficiency is degraded considerably for higher doping levels, the structure still achieves a competitive efficiency at higher doping levels, for which its cost is greatly reduced, in comparison with thin film solar cells. Moreover, using higher doping permits lesser wafer area which could be beneficial for large area solar cells design.

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A High-Efficiency HIT Solar Cell With Pillar Texturing

Cited by 23 publications

References 21 publications

3D-printed hierarchical pillar array electrodes for high performance semi-artificial photosynthesis

3D-printed hierarchical pillar array electrodes for high performance semi-artificial photosynthesis

From Crystalline to Low-cost Silicon-based Solar Cells: a Review

Investigation of Base High Doping Impact on the npn Solar Cell Microstructure Performance Using Physically Based Analytical Model

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