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A Comparison of Different Textured and Non-Textured Anti-Reflective Coatings for Planar Monolithic Silicon-Perovskite Tandem Solar Cells
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Matt Carnie
ACS Applied Energy Materials, Volume: 5, Issue: 5, Pages: 5974 - 5982
Swansea University Authors:
Michael Spence, Adam Pockett, Zhengfei Wei, Trystan Watson , Matt Carnie
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DOI (Published version): 10.1021/acsaem.2c00361
Abstract
Multijunction solar cells offer a route to exceed the Shockley–Queisser limit for single-junction devices. In a few short years, silicon-perovskite tandems have significantly passed the efficiency of the best silicon single-junction cells. For scalable solution processing of silicon-perovskite tande...
| Published in: | ACS Applied Energy Materials |
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| ISSN: | 2574-0962 2574-0962 |
| Published: |
American Chemical Society (ACS)
2022
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa61009 |
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| Abstract: |
Multijunction solar cells offer a route to exceed the Shockley–Queisser limit for single-junction devices. In a few short years, silicon-perovskite tandems have significantly passed the efficiency of the best silicon single-junction cells. For scalable solution processing of silicon-perovskite tandem devices, with the avoidance of vacuum processing steps, a flat silicon sub-cell is normally required. This results in a flat top surface that can lead to higher optical reflection losses than conformal deposition on textured silicon bottom cells. To overcome this, textured anti-reflective coatings (ARCs) can be used on top of the finished cell, with textured polydimethylsiloxane (PDMS), a promising candidate. In this work, we vary the texture geometry and film thickness of PDMS anti-reflective foils to understand the effect of these parameters on reflectance of the foil. The best film is selected, and anti-reflective performance is compared with two common planar ARCs─lithium fluoride (LiF) and magnesium fluoride (MgF2) showing considerable reduction in reflectance for a non-textured silicon-perovskite tandem cell. The application of a PDMS film is shown to give a 3–5% increase in integrated JSC in each sub-cell of a silicon-perovskite tandem structure. |
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| College: |
Faculty of Science and Engineering |
| Funders: |
European Regional Development Fund - SPARC II; Engineering and Physical Sciences Research Council - EP/N020863/1, EP/S513714/1, EP/T028513/1 |
| Issue: |
5 |
| Start Page: |
5974 |
| End Page: |
5982 |