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Predicting solar cell performance from terahertz and microwave spectroscopy
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(2022) Predicting solar cell performance from terahertz and microwave spectroscopy. Advanced Energy Materials, 12 (13). 2102776. doi:10.1002/aenm.202102776
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WRAP-Predicting-solar-cell-performance-from-terahertz-and-microwave-spectroscopy-Monti-2022.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons: Attribution-Noncommercial 4.0. Download (2191Kb) | Preview |
Official URL: http://dx.doi.org/10.1002/aenm.202102776
Abstract
Mobilities and lifetimes of photogenerated charge carriers are core properties of photovoltaic materials and can both be characterized by contactless terahertz or microwave measurements. Here, the expertise from fifteen laboratories is combined to quantitatively model the current-voltage characteristics of a solar cell from such measurements. To this end, the impact of measurement conditions, alternate interpretations, and experimental inter-laboratory variations are discussed using a (Cs,FA,MA)Pb(I,Br)3 halide perovskite thin-film as a case study. At 1 sun equivalent excitation, neither transport nor recombination is significantly affected by exciton formation or trapping. Terahertz, microwave, and photoluminescence transients for the neat material yield consistent effective lifetimes implying a resistance-free JV-curve with a potential power conversion efficiency of 24.6 %. For grainsizes above ≈20 nm, intra-grain charge transport is characterized by terahertz sum mobilities of ≈32 cm2 V−1 s−1. Drift-diffusion simulations indicate that these intra-grain mobilities can slightly reduce the fill factor of perovskite solar cells to 0.82, in accordance with the best-realized devices in the literature. Beyond perovskites, this work can guide a highly predictive characterization of any emerging semiconductor for photovoltaic or photoelectrochemical energy conversion. A best practice for the interpretation of terahertz and microwave measurements on photovoltaic materials is presented.
Item Type: | Journal Item | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Solar cells, Terahertz spectroscopy, Microwave spectroscopy | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Journal or Publication Title: | Advanced Energy Materials | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Publisher: | Wiley - V C H Verlag GmbH & Co. KGaA | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ISSN: | 1614-6832 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Official Date: | 7 April 2022 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Volume: | 12 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Number: | 13 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Number of Pages: | 16 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Article Number: | 2102776 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
DOI: | 10.1002/aenm.202102776 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Status: | Peer Reviewed | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Publication Status: | Published | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Date of first compliant deposit: | 27 April 2022 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Date of first compliant Open Access: | 28 April 2022 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
RIOXX Funder/Project Grant: |
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