Non-radiative decay mechanisms in blue phosphorescent iridium(III) complexes
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| Title: | Non-radiative decay mechanisms in blue phosphorescent iridium(III) complexes |
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| Authors: | Harding, Ruth E.1, Lo, Shih-Chun2, Burn, Paul L.2,3 p.burn2@uq.edu.au, Samuel, Ifor D.W.1 idws@st-andrews.ac.uk |
| Source: | Organic Electronics. Jun2008, Vol. 9 Issue 3, p377-384. 8p. |
| Subjects: | Phosphorescence, Fluorescence, Iridium, Photoluminescence, Radiation |
| Abstract: | Abstract: By using phosphorescent emitters, organic light emitting displays can be up to four times more efficient than those of fluorescent materials. Full colour displays based on phosphorescent materials have not been achieved thus far due to the poor efficiency of blue phosphorescent emitters. We show that there is a correlation between non-radiative decay of phosphorescence and vibrational coupling for related blue emissive materials containing similar iridium(III) complex chromophores. The materials had solution photoluminescence quantum yields (PLQYs) of up to 55% at room temperature with Commission Internationale de l’Eclairage co-ordinates of (0.155, 0.16). Stronger vibrational coupling was found to lead to an increased non-radiative decay rate and decreased PLQY. The activation energy for non-radiative decay was found to depend on the environment with the non-radiative decay rate being decreased when the emissive materials were placed in a solid host. [Copyright &y& Elsevier] |
| Copyright of Organic Electronics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 31560307 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Non-radiative decay mechanisms in blue phosphorescent iridium(III) complexes – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Harding%2C+Ruth+E%2E%22">Harding, Ruth E.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Lo%2C+Shih-Chun%22">Lo, Shih-Chun</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Burn%2C+Paul+L%2E%22">Burn, Paul L.</searchLink><relatesTo>2,3</relatesTo><i> p.burn2@uq.edu.au</i><br /><searchLink fieldCode="AR" term="%22Samuel%2C+Ifor+D%2EW%2E%22">Samuel, Ifor D.W.</searchLink><relatesTo>1</relatesTo><i> idws@st-andrews.ac.uk</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Organic+Electronics%22">Organic Electronics</searchLink>. Jun2008, Vol. 9 Issue 3, p377-384. 8p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Phosphorescence%22">Phosphorescence</searchLink><br /><searchLink fieldCode="DE" term="%22Fluorescence%22">Fluorescence</searchLink><br /><searchLink fieldCode="DE" term="%22Iridium%22">Iridium</searchLink><br /><searchLink fieldCode="DE" term="%22Photoluminescence%22">Photoluminescence</searchLink><br /><searchLink fieldCode="DE" term="%22Radiation%22">Radiation</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: By using phosphorescent emitters, organic light emitting displays can be up to four times more efficient than those of fluorescent materials. Full colour displays based on phosphorescent materials have not been achieved thus far due to the poor efficiency of blue phosphorescent emitters. We show that there is a correlation between non-radiative decay of phosphorescence and vibrational coupling for related blue emissive materials containing similar iridium(III) complex chromophores. The materials had solution photoluminescence quantum yields (PLQYs) of up to 55% at room temperature with Commission Internationale de l’Eclairage co-ordinates of (0.155, 0.16). Stronger vibrational coupling was found to lead to an increased non-radiative decay rate and decreased PLQY. The activation energy for non-radiative decay was found to depend on the environment with the non-radiative decay rate being decreased when the emissive materials were placed in a solid host. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Organic Electronics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.orgel.2008.01.009 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 377 Subjects: – SubjectFull: Phosphorescence Type: general – SubjectFull: Fluorescence Type: general – SubjectFull: Iridium Type: general – SubjectFull: Photoluminescence Type: general – SubjectFull: Radiation Type: general Titles: – TitleFull: Non-radiative decay mechanisms in blue phosphorescent iridium(III) complexes Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Harding, Ruth E. – PersonEntity: Name: NameFull: Lo, Shih-Chun – PersonEntity: Name: NameFull: Burn, Paul L. – PersonEntity: Name: NameFull: Samuel, Ifor D.W. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 06 Text: Jun2008 Type: published Y: 2008 Identifiers: – Type: issn-print Value: 15661199 Numbering: – Type: volume Value: 9 – Type: issue Value: 3 Titles: – TitleFull: Organic Electronics Type: main |
| ResultId | 1 |
