Optical Simulation-Aided Design and Engineering of Monolithic Perovskite/Silicon Tandem Solar Cells.
ACS Appl Energy Mater
; 6(10): 5217-5229, 2023 May 22.
Article
en En
| MEDLINE
| ID: mdl-37234970
ABSTRACT
Monolithic perovskite/c-Si tandem solar cells have attracted enormous research attention and have achieved efficiencies above 30%. This work describes the development of monolithic tandem solar cells based on silicon heterojunction (SHJ) bottom- and perovskite top-cells and highlights light management techniques assisted by optical simulation. We first engineered (i)a-SiH passivating layers for (100)-oriented flat c-Si surfaces and combined them with various (n)a-SiH, (n)nc-SiH, and (n)nc-SiOxH interfacial layers for SHJ bottom-cells. In a symmetrical configuration, a long minority carrier lifetime of 16.9 ms was achieved when combining (i)a-SiH bilayers with (n)nc-SiH (extracted at the minority carrier density of 1015 cm-3). The perovskite sub-cell uses a photostable mixed-halide composition and surface passivation strategies to minimize energetic losses at charge-transport interfaces. This allows tandem efficiencies above 23% (a maximum of 24.6%) to be achieved using all three types of (n)-layers. Observations from experimentally prepared devices and optical simulations indicate that both (n)nc-SiOxH and (n)nc-SiH are promising for use in high-efficiency tandem solar cells. This is possible due to minimized reflection at the interfaces between the perovskite and SHJ sub-cells by optimized interference effects, demonstrating the applicability of such light management techniques to various tandem structures.
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01-internacional
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MEDLINE
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En
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ACS Appl Energy Mater
Año:
2023
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Article
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Países Bajos