ORCID Profile
0000-0002-5395-5850
Current Organisation
University of Oxford
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Publisher: Elsevier BV
Date: 12-2018
Publisher: AIP Publishing
Date: 08-01-2020
DOI: 10.1063/1.5139894
Abstract: In this paper, the physical mechanisms involved in electron-beam-induced current (EBIC) imaging of semiconductor pn-junctions are reviewed to propose a model and optimize the acquisition of experimental data. Insights are drawn on the dependence of the EBIC signal with electron accelerating voltage and surface conditions. It is concluded that improvements in the resolution of EBIC are possible when the surface conditions of the specimens are carefully considered and optimized. A lower accelerating voltage and an increase of the surface recombination velocities are quantitatively shown to maximize the EBIC lateral resolution in locating the pn-junction. The effect of surface band bending is included in the model, and it is seen to primarily affect the surface recombination. Introducing controlled surface damage is shown as a potential method for resolution enhancement via focused ion beam milling with Ga+ ions. These findings contribute to the understanding of this technique and can produce further improvements to its application in semiconductor device technology.
Publisher: Wiley
Date: 21-02-2023
DOI: 10.1002/PIP.3687
Abstract: High‐efficiency silicon‐based tandem solar cells will likely drive the push towards terawatt (TW) scale PV manufacturing on the pathway to net zero emissions by 2050. In this work, we provide a comprehensive analysis of material consumption and sustainability issues for future tandem solar cells. First, we analyse the material consumption and sustainable manufacturing capacity of a variety of potential candidates for the top cell in a silicon‐based tandem cell. We show that III‐V, CIGS and CdTe are not suitable to support TW‐scale manufacturing. Perovskites thus present the most sustainable approach, as long as indium is not required in the cell structure. Next, we turn our attention to the silicon bottom cell architecture by comparing PERC, TOPCon and SHJ. Although tandem cells can generally reduce silver consumption relative to single junction silicon cells due to the more favourable J MP / V MP ratio, the PERC cell architecture could allow for significantly reduced Ag consumption compared with both TOPCon and SHJ by relying on Al for the rear p‐type contact. In order to drive a rapid shift towards TW‐scale manufacturing, a rapid upscaling compared with the current production capacity is needed. The results presented herein highlight the need for careful consideration of sustainability issues when designing future high‐efficiency tandem cells that will help the world mitigate the dangers of climate change.
Publisher: Elsevier BV
Date: 12-2022
Publisher: Wiley
Date: 04-10-2017
Publisher: Elsevier BV
Date: 08-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3EE00952A
Abstract: This review details the design considerations for the bottom silicon cell in perovskite/silicon tandems. The review highlights the shift in mindset required when transitioning to the mass production of tandem solar cells.
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2019
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2023
Publisher: IEEE
Date: 06-2019
Publisher: Author(s)
Date: 2018
DOI: 10.1063/1.5049338
Publisher: Author(s)
Date: 2018
DOI: 10.1063/1.5049289
Publisher: Wiley
Date: 12-06-2017
Location: United Kingdom of Great Britain and Northern Ireland
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for Ruy Bonilla.