Up-conversion materials for solid-state lighting Article Swipe
Rui M. Almeida
,
E. Alves
,
Luís F. Santos
·
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.1007/s10971-024-06577-5
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.1007/s10971-024-06577-5
Conventional phosphor-converted white LEDs (WLEDs), using (Stokes) down-conversion light emission, suffer from a red deficiency that increases the Color Temperature towards “cool white light” above 5000 K. The present work describes a phosphor-Up-converted WLED approach that wishes to overcome this issue by achieving white light generation (WLG) through Up-conversion photoluminescence (UCPL), without energy losses due to Stokes shift and excited by a 980 nm LED instead of the more expensive blue LEDs. The UC materials include thin films of lanthanide (Ln)-doped aluminosilicate glass multilayers, alternating (Ln)-doped aluminosilicate and titania films in the form of 1-D photonic crystals and Ln ion-implanted materials. Sol-gel (SG) processing has been used as a low-cost high purity processing method to prepare titania, as well as aluminosilicate films containing Er 3+ , Tm 3+ and Yb 3+ , for WLG and possible application as WLED materials. The total Ln content varied from a high of 22 mol% to as low as 5.8 mol%. The materials prepared have been characterized by UV-Vis-NIR (using a variable angle specular reflection accessory), plus FTIR and UCPL spectroscopies. The UC light emission was analyzed with the help of CIE chromaticity diagrams. Graphical abstract
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1007/s10971-024-06577-5
- OA Status
- hybrid
- Cited By
- 2
- References
- 16
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- OpenAlex ID
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All OpenAlex metadata
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https://openalex.org/W4403245138Canonical identifier for this work in OpenAlex
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https://doi.org/10.1007/s10971-024-06577-5Digital Object Identifier
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Up-conversion materials for solid-state lightingWork title
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articleOpenAlex work type
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enPrimary language
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2024Year of publication
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2024-10-09Full publication date if available
- Authors
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Rui M. Almeida, E. Alves, Luís F. SantosList of authors in order
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https://doi.org/10.1007/s10971-024-06577-5Publisher landing page
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YesWhether a free full text is available
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hybridOpen access status per OpenAlex
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https://doi.org/10.1007/s10971-024-06577-5Direct OA link when available
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Solid-state, Solid-state lighting, Materials science, Smart lighting, Process engineering, Environmental science, Engineering physics, Optoelectronics, Light-emitting diode, Optics, Physics, EngineeringTop concepts (fields/topics) attached by OpenAlex
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2Total citation count in OpenAlex
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2025: 2Per-year citation counts (last 5 years)
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10Other works algorithmically related by OpenAlex
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| abstract_inverted_index.white | 3, 23, 44 |
| abstract_inverted_index.(using | 166 |
| abstract_inverted_index.Stokes | 57 |
| abstract_inverted_index.energy | 53 |
| abstract_inverted_index.losses | 54 |
| abstract_inverted_index.method | 114 |
| abstract_inverted_index.purity | 112 |
| abstract_inverted_index.suffer | 11 |
| abstract_inverted_index.varied | 145 |
| abstract_inverted_index.wishes | 37 |
| abstract_inverted_index.(UCPL), | 51 |
| abstract_inverted_index.Sol-gel | 102 |
| abstract_inverted_index.content | 144 |
| abstract_inverted_index.excited | 60 |
| abstract_inverted_index.include | 76 |
| abstract_inverted_index.instead | 66 |
| abstract_inverted_index.prepare | 116 |
| abstract_inverted_index.present | 29 |
| abstract_inverted_index.through | 48 |
| abstract_inverted_index.titania | 89 |
| abstract_inverted_index.towards | 21 |
| abstract_inverted_index.without | 52 |
| abstract_inverted_index.“cool | 22 |
| abstract_inverted_index.(Stokes) | 7 |
| abstract_inverted_index.(WLEDs), | 5 |
| abstract_inverted_index.Abstract | 0 |
| abstract_inverted_index.abstract | 192 |
| abstract_inverted_index.analyzed | 183 |
| abstract_inverted_index.approach | 35 |
| abstract_inverted_index.crystals | 97 |
| abstract_inverted_index.emission | 181 |
| abstract_inverted_index.light” | 24 |
| abstract_inverted_index.low-cost | 110 |
| abstract_inverted_index.overcome | 39 |
| abstract_inverted_index.photonic | 96 |
| abstract_inverted_index.possible | 136 |
| abstract_inverted_index.prepared | 160 |
| abstract_inverted_index.specular | 170 |
| abstract_inverted_index.titania, | 117 |
| abstract_inverted_index.variable | 168 |
| abstract_inverted_index.Graphical | 191 |
| abstract_inverted_index.achieving | 43 |
| abstract_inverted_index.describes | 31 |
| abstract_inverted_index.diagrams. | 190 |
| abstract_inverted_index.emission, | 10 |
| abstract_inverted_index.expensive | 70 |
| abstract_inverted_index.increases | 17 |
| abstract_inverted_index.materials | 75, 159 |
| abstract_inverted_index.(Ln)-doped | 81, 86 |
| abstract_inverted_index.UV-Vis-NIR | 165 |
| abstract_inverted_index.containing | 123 |
| abstract_inverted_index.deficiency | 15 |
| abstract_inverted_index.generation | 46 |
| abstract_inverted_index.lanthanide | 80 |
| abstract_inverted_index.materials. | 101, 140 |
| abstract_inverted_index.processing | 104, 113 |
| abstract_inverted_index.reflection | 171 |
| abstract_inverted_index.Temperature | 20 |
| abstract_inverted_index.accessory), | 172 |
| abstract_inverted_index.alternating | 85 |
| abstract_inverted_index.application | 137 |
| abstract_inverted_index.Conventional | 1 |
| abstract_inverted_index.chromaticity | 189 |
| abstract_inverted_index.multilayers, | 84 |
| abstract_inverted_index.Up-conversion | 49 |
| abstract_inverted_index.characterized | 163 |
| abstract_inverted_index.ion-implanted | 100 |
| abstract_inverted_index.aluminosilicate | 82, 87, 121 |
| abstract_inverted_index.down-conversion | 8 |
| abstract_inverted_index.spectroscopies. | 177 |
| abstract_inverted_index.photoluminescence | 50 |
| abstract_inverted_index.phosphor-converted | 2 |
| abstract_inverted_index.phosphor-Up-converted | 33 |
| cited_by_percentile_year.max | 97 |
| cited_by_percentile_year.min | 95 |
| countries_distinct_count | 1 |
| institutions_distinct_count | 3 |
| sustainable_development_goals[0].id | https://metadata.un.org/sdg/7 |
| sustainable_development_goals[0].score | 0.8899999856948853 |
| sustainable_development_goals[0].display_name | Affordable and clean energy |
| citation_normalized_percentile.value | 0.57851947 |
| citation_normalized_percentile.is_in_top_1_percent | False |
| citation_normalized_percentile.is_in_top_10_percent | False |