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Stabilizing Organic–Inorganic Lead Halide Perovskite Solar Cells With Efficiency Beyond 20%
The power conversion efficiency (PCE) of organic–inorganic lead halide perovskite solar cells (PSCs) has exceeded 25%, approaching the best record of their silicon counterpart. However, lifetime issues still stand between PSCs and the goal of mass commercialization. For instance, most photoactive pe...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Frontiers Media S.A.
2020
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7399487/ https://www.ncbi.nlm.nih.gov/pubmed/32850630 http://dx.doi.org/10.3389/fchem.2020.00592 |
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author | Lin, Ching |
author_facet | Lin, Ching |
author_sort | Lin, Ching |
collection | PubMed |
description | The power conversion efficiency (PCE) of organic–inorganic lead halide perovskite solar cells (PSCs) has exceeded 25%, approaching the best record of their silicon counterpart. However, lifetime issues still stand between PSCs and the goal of mass commercialization. For instance, most photoactive perovskites are hydrophilic, and moisture can quickly turn some of their constituents to compounds yielding trap states. Some perovskites are not thermally stable in the temperature window of solar cell operation and will transform into photo-inactive non-perovskites. If a perovskite is of an inadequate quality, e.g., vacancies, surface area, or grain boundaries per unit volume are high, there exist more defect sites, acting as migration pathways for perovskite ions under photo-bias, and the migration changes the perovskite's composition. An unstable perovskite/charge transport material (CTM) interface allows cross-contamination between molecules from both sides of the interface. Even without external stress, perovskite ions in an operating PSC undergo redox processes, which create defect states or initiate chemical chain reactions to accelerate PSC degradation. This mini-review discussed recent progress in solving issues, including the above, to stabilize PSCs with competitive PCE beyond 20%. The remarkable longevity of 15 PSCs under accelerated aging tests was probed in depth from three viewpoints: (1) perovskite compositions and dopants, (2) perovskite additives, and (3) CTMs. This mini-review, within which crucial perovskite-stabilizing methods were systematically analyzed, can be used as a quick-start guide when dealing with PSCs' stability in the future. |
format | Online Article Text |
id | pubmed-7399487 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-73994872020-08-25 Stabilizing Organic–Inorganic Lead Halide Perovskite Solar Cells With Efficiency Beyond 20% Lin, Ching Front Chem Chemistry The power conversion efficiency (PCE) of organic–inorganic lead halide perovskite solar cells (PSCs) has exceeded 25%, approaching the best record of their silicon counterpart. However, lifetime issues still stand between PSCs and the goal of mass commercialization. For instance, most photoactive perovskites are hydrophilic, and moisture can quickly turn some of their constituents to compounds yielding trap states. Some perovskites are not thermally stable in the temperature window of solar cell operation and will transform into photo-inactive non-perovskites. If a perovskite is of an inadequate quality, e.g., vacancies, surface area, or grain boundaries per unit volume are high, there exist more defect sites, acting as migration pathways for perovskite ions under photo-bias, and the migration changes the perovskite's composition. An unstable perovskite/charge transport material (CTM) interface allows cross-contamination between molecules from both sides of the interface. Even without external stress, perovskite ions in an operating PSC undergo redox processes, which create defect states or initiate chemical chain reactions to accelerate PSC degradation. This mini-review discussed recent progress in solving issues, including the above, to stabilize PSCs with competitive PCE beyond 20%. The remarkable longevity of 15 PSCs under accelerated aging tests was probed in depth from three viewpoints: (1) perovskite compositions and dopants, (2) perovskite additives, and (3) CTMs. This mini-review, within which crucial perovskite-stabilizing methods were systematically analyzed, can be used as a quick-start guide when dealing with PSCs' stability in the future. Frontiers Media S.A. 2020-07-28 /pmc/articles/PMC7399487/ /pubmed/32850630 http://dx.doi.org/10.3389/fchem.2020.00592 Text en Copyright © 2020 Lin. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Chemistry Lin, Ching Stabilizing Organic–Inorganic Lead Halide Perovskite Solar Cells With Efficiency Beyond 20% |
title | Stabilizing Organic–Inorganic Lead Halide Perovskite Solar Cells With Efficiency Beyond 20% |
title_full | Stabilizing Organic–Inorganic Lead Halide Perovskite Solar Cells With Efficiency Beyond 20% |
title_fullStr | Stabilizing Organic–Inorganic Lead Halide Perovskite Solar Cells With Efficiency Beyond 20% |
title_full_unstemmed | Stabilizing Organic–Inorganic Lead Halide Perovskite Solar Cells With Efficiency Beyond 20% |
title_short | Stabilizing Organic–Inorganic Lead Halide Perovskite Solar Cells With Efficiency Beyond 20% |
title_sort | stabilizing organic–inorganic lead halide perovskite solar cells with efficiency beyond 20% |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7399487/ https://www.ncbi.nlm.nih.gov/pubmed/32850630 http://dx.doi.org/10.3389/fchem.2020.00592 |
work_keys_str_mv | AT linching stabilizingorganicinorganicleadhalideperovskitesolarcellswithefficiencybeyond20 |