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- Publisher Website: 10.1039/C8EE00580J
- Scopus: eid_2-s2.0-85052077696
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Article: Improving the stability and performance of perovskite solar cells via off-the-shelf post-device ligand treatment
Title | Improving the stability and performance of perovskite solar cells via off-the-shelf post-device ligand treatment |
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Authors | |
Issue Date | 2018 |
Publisher | RSC Publications. The Journal's web site is located at http://pubs.rsc.org/en/journals/journalissues/ee#!recentarticles&all |
Citation | Energy & Environmental Science, 2018, v. 11 n. 8, p. 2253-2262 How to Cite? |
Abstract | While metal halide perovskite solar cells (PVSCs) have drawn intense attention due to their high solar-to-power conversion efficiency (PCE), their practical application is hampered by their poor long-term stability against moisture. Although strategies have been reported to solve this issue, these methods are introduced during core-device fabrication processes which will increase the risk of introducing unexpected impurities during the fabrication. Herein, we introduce the first kind of simple post-device ligand (PDL) treatment to significantly improve the PCE of completely fabricated PVSCs from 18.7% to 20.13%. Meanwhile, the stability of the treated devices without any encapsulation remarkably improves, with 70% PCE maintained under ambient conditions after a 500-hour maximum-power-point tracking test, while the control unencapsulated device will completely break down within 100 hours. Equally important is that this post-device treatment shows a special ‘stitching effect’, namely repairing the as-fabricated ‘poor devices’ by healing the defects of the perovskite active region, and can improve the PCE by over 900%. We also experimentally and theoretically study the fundamental mechanism of the improvement. Consequently, our approach greatly improves the production yield of high-quality PVSCs and their module performances as well as the reduction of lead-waste. Additionally, the treatment is an off-the-shelf post-device approach that can be integrated into any existing perovskite-device fabrication, offering a general strategy to improve the stability and performance of perovskite optoelectronic devices. |
Persistent Identifier | http://hdl.handle.net/10722/259313 |
ISSN | 2023 Impact Factor: 32.4 2023 SCImago Journal Rankings: 10.935 |
ISI Accession Number ID | |
Grants |
DC Field | Value | Language |
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dc.contributor.author | Zhang, H | - |
dc.contributor.author | Ren, X | - |
dc.contributor.author | Chen, X | - |
dc.contributor.author | Mao, J | - |
dc.contributor.author | Cheng, J | - |
dc.contributor.author | Zhao, Y | - |
dc.contributor.author | Liu, Y | - |
dc.contributor.author | Milic, J | - |
dc.contributor.author | Yin, WJ | - |
dc.contributor.author | Grätzel, M | - |
dc.contributor.author | Choy, WCH | - |
dc.date.accessioned | 2018-09-03T04:05:00Z | - |
dc.date.available | 2018-09-03T04:05:00Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Energy & Environmental Science, 2018, v. 11 n. 8, p. 2253-2262 | - |
dc.identifier.issn | 1754-5692 | - |
dc.identifier.uri | http://hdl.handle.net/10722/259313 | - |
dc.description.abstract | While metal halide perovskite solar cells (PVSCs) have drawn intense attention due to their high solar-to-power conversion efficiency (PCE), their practical application is hampered by their poor long-term stability against moisture. Although strategies have been reported to solve this issue, these methods are introduced during core-device fabrication processes which will increase the risk of introducing unexpected impurities during the fabrication. Herein, we introduce the first kind of simple post-device ligand (PDL) treatment to significantly improve the PCE of completely fabricated PVSCs from 18.7% to 20.13%. Meanwhile, the stability of the treated devices without any encapsulation remarkably improves, with 70% PCE maintained under ambient conditions after a 500-hour maximum-power-point tracking test, while the control unencapsulated device will completely break down within 100 hours. Equally important is that this post-device treatment shows a special ‘stitching effect’, namely repairing the as-fabricated ‘poor devices’ by healing the defects of the perovskite active region, and can improve the PCE by over 900%. We also experimentally and theoretically study the fundamental mechanism of the improvement. Consequently, our approach greatly improves the production yield of high-quality PVSCs and their module performances as well as the reduction of lead-waste. Additionally, the treatment is an off-the-shelf post-device approach that can be integrated into any existing perovskite-device fabrication, offering a general strategy to improve the stability and performance of perovskite optoelectronic devices. | - |
dc.language | eng | - |
dc.publisher | RSC Publications. The Journal's web site is located at http://pubs.rsc.org/en/journals/journalissues/ee#!recentarticles&all | - |
dc.relation.ispartof | Energy & Environmental Science | - |
dc.title | Improving the stability and performance of perovskite solar cells via off-the-shelf post-device ligand treatment | - |
dc.type | Article | - |
dc.identifier.email | Choy, WCH: chchoy@eee.hku.hk | - |
dc.identifier.authority | Choy, WCH=rp00218 | - |
dc.identifier.doi | 10.1039/C8EE00580J | - |
dc.identifier.scopus | eid_2-s2.0-85052077696 | - |
dc.identifier.hkuros | 289875 | - |
dc.identifier.hkuros | 290288 | - |
dc.identifier.volume | 11 | - |
dc.identifier.issue | 8 | - |
dc.identifier.spage | 2253 | - |
dc.identifier.epage | 2262 | - |
dc.identifier.isi | WOS:000442262900033 | - |
dc.publisher.place | United Kingdom | - |
dc.relation.project | Inert-environment facilities for investigating optical-electrical-thermal properties of hybrid structure optoelectronics | - |
dc.identifier.issnl | 1754-5692 | - |