Conductive and Stable Magnesium Oxide Electron‐Selective Contacts for Efficient Silicon Solar Cells
Yimao Wan,Christian Samundsett,James Bullock,Mark Hettick,Thomas Allen,Di Yan,Jun Peng,Yiliang Wu,Jie Cui,Ali Javey,Andres Cuevas +10 more
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TLDR
In this paper, the authors demonstrate a highly conductive and thermally stable electrode composed of a magnesium oxide/aluminium (MgOx/Al) contact, achieving moderately low resistivity Ohmic contacts on lightly doped n-type c-Si.Abstract:
A high Schottky barrier (>0.65 eV) for electrons is typically found on lightly doped n-type crystalline (c-Si) wafers for a variety of contact metals. This behavior is commonly attributed to the Fermi-level pinning effect and has hindered the development of n-type c-Si solar cells, while its p-type counterparts have been commercialized for several decades, typically utilizing aluminium alloys in full-area, and more recently, partial-area rear contact configurations. Here the authors demonstrate a highly conductive and thermally stable electrode composed of a magnesium oxide/aluminium (MgOx/Al) contact, achieving moderately low resistivity Ohmic contacts on lightly doped n-type c-Si. The electrode, functionalized with nanoscale MgOx films, significantly enhances the performance of n-type c-Si solar cells to a power conversion efficiency of 20%, advancing n-type c-Si solar cells with full-area dopant-free rear contacts to a point of competitiveness with the standard p-type architecture. The low thermal budget of the cathode formation, its dopant-free nature, and the simplicity of the device structure enabled by the MgOx/Al contact open up new possibilities in designing and fabricating low-cost optoelectronic devices, including solar cells, thin film transistors, or light emitting diodes.read more
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Applications of Phosphorene and Black Phosphorus in Energy Conversion and Storage Devices
Jinbo Pang,Alicja Bachmatiuk,Yin Yin,Barbara Trzebicka,Liang Zhao,Lei Fu,Rafael G. Mendes,Rafael G. Mendes,Thomas Gemming,Zhongfan Liu,Zhongfan Liu,Mark H. Rümmeli +11 more
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Passivating contacts for crystalline silicon solar cells
TL;DR: De Wolf et al. as mentioned in this paper reviewed the fundamental physical processes governing contact formation in crystalline silicon (c-Si) and identified the role passivating contacts play in increasing c-Si solar cell efficiencies beyond the limitations imposed by heavy doping and direct metallization.
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Passivating Contacts for Crystalline Silicon Solar Cells: From Concepts and Materials to Prospects
Jimmy Melskens,Bas W. H. van de Loo,Bart Macco,Lachlan E. Black,Sjoerd Smit,Wilhelmus M. M. Kessels +5 more
TL;DR: In this paper, the authors discuss the design guidelines for passivating contacts and outline their prospects, and present an overview and classification of work to date on passivating contact structures in c-Si solar cells.
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Surface passivation of crystalline silicon solar cells: Present and future
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Dielectric surface passivation for silicon solar cells: A review
TL;DR: A review of the dielectric passivation coatings developed in the past two decades using a standardised methodology to characterise the metrics of surface recombination across all techniques and materials is provided in this article.
References
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Semiconductor Material and Device Characterization
TL;DR: In this article, the authors present a characterization of the resistivity of a two-point-versus-four-point probe in terms of the number of contacts and the amount of contacts in the probe.
Journal ArticleDOI
Achievement of More Than 25% Conversion Efficiency With Crystalline Silicon Heterojunction Solar Cell
Keiichiro Masuko,Masato Shigematsu,Taiki Hashiguchi,Daisuke Fujishima,Motohide Kai,Naoki Yoshimura,Tsutomu Yamaguchi,Yoshinari Ichihashi,Takahiro Mishima,Naoteru Matsubara,Tsutomu Yamanishi,Tsuyoshi Takahama,Mikio Taguchi,Eiji Maruyama,Shingo Okamoto +14 more
TL;DR: In this article, the structure of an interdigitated back contact was adopted with crystalline silicon heterojunction solar cells to reduce optical loss from a front grid electrode, a transparent conducting oxide (TCO) layer, and a-Si:H layers as an approach for exceeding the conversion efficiency of 25%.
Journal ArticleDOI
Light trapping properties of pyramidally textured surfaces
Patrick Campbell,Martin A. Green +1 more
TL;DR: In this paper, the light trapping properties of textured optical sheets have become of recent interest in photovoltaic energy conversion since light trapping allows a significant reduction in the thickness of active solar cell material.
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Anisotropic etching of silicon in TMAH solutions
TL;DR: In this article, the tetramethyl ammonium hydroxide (TMAH, (CH3)4NOH) was used for silicon anisotropic etching solutions with various concentrations from 5 to 40 wt.% and temperatures from 60 to 90 °C.