Improving light extraction of flexible OLEDs using a mechanically robust Ag mesh/ITO composite electrode and microlens array
In this study, we designed a highly flexible, mechanically robust Ag mesh/ITO composite transparent conducting electrode (TCE) integrated with a microlens array (MLA) to improve the light extraction of organic light-emitting diodes (OLEDs). The mechanical flexibility and durability of a flexible OLE...
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| Veröffentlicht in: | Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2018, Vol.6 (20), p.5444-5452 |
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| container_end_page | 5452 |
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| container_issue | 20 |
| container_start_page | 5444 |
| container_title | Journal of materials chemistry. C, Materials for optical and electronic devices |
| container_volume | 6 |
| creator | Shin, So-Ra Lee, Hock Beng Jin, Won-Yong Ko, Keum-Jin Park, Sunghee Yoo, Seunghyup Kang, Jae-Wook |
| description | In this study, we designed a highly flexible, mechanically robust Ag mesh/ITO composite transparent conducting electrode (TCE) integrated with a microlens array (MLA) to improve the light extraction of organic light-emitting diodes (OLEDs). The mechanical flexibility and durability of a flexible OLED based on a Ag mesh/ITO composite TCE were superior to those of a device with a conventional ITO electrode, retaining ∼100% initial luminance for up to 1000 cycles at a bending radius of ∼2 mm. Additionally, both experimental and theoretical characterizations suggest that the performance of a flexible OLED, such as its external quantum efficiency and angular-dependent emission, vastly improves after the incorporation of MLA due to the additional light scattering induced by the MLA. The combined use of Ag mesh and MLA is a practical way to overcome the brittleness of ITO and improve the out-coupling efficiency of flexible OLEDs (enhancement ratio of ∼1.51). |
| doi_str_mv | 10.1039/C8TC01415A |
| format | Article |
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The mechanical flexibility and durability of a flexible OLED based on a Ag mesh/ITO composite TCE were superior to those of a device with a conventional ITO electrode, retaining ∼100% initial luminance for up to 1000 cycles at a bending radius of ∼2 mm. Additionally, both experimental and theoretical characterizations suggest that the performance of a flexible OLED, such as its external quantum efficiency and angular-dependent emission, vastly improves after the incorporation of MLA due to the additional light scattering induced by the MLA. 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The combined use of Ag mesh and MLA is a practical way to overcome the brittleness of ITO and improve the out-coupling efficiency of flexible OLEDs (enhancement ratio of ∼1.51).</description><subject>Bend radius</subject><subject>Diodes</subject><subject>Electrodes</subject><subject>Organic light emitting diodes</subject><subject>Quantum efficiency</subject><issn>2050-7526</issn><issn>2050-7534</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNpFkFFLwzAQx4MoOOZe_AQB34S6pGnT9HHUqYPBXuZzSdPLlpE2M0llAz-8lYneyx3H7-5_90fonpInSlg5r8S2IjSj-eIKTVKSk6TIWXb9V6f8Fs1COJAxBOWClxP0teqO3n2afoet2e0jhlP0UkXjeuw01hZOprGAN-vlc8BD-AEl7kDtZW-UtPaMvWuGEPFiN7bDfr7abrBy3dEFEwGDBRW9awHLvsWdUd5Z6AOW3svzHbrR0gaY_eYpen9Zbqu3ZL15XVWLdaLSkseEF1A2BQjWlCIv21a2gjcK2hJyxjUVElIpM5kxnRFVaCaVkK1uNeTjHC0yNkUPl73jqx8DhFgf3OD7UbJOScaY4IKkI_V4ocYbQ_Cg66M3nfTnmpL6x-D632D2DZ_bb9Y</recordid><startdate>2018</startdate><enddate>2018</enddate><creator>Shin, So-Ra</creator><creator>Lee, Hock Beng</creator><creator>Jin, Won-Yong</creator><creator>Ko, Keum-Jin</creator><creator>Park, Sunghee</creator><creator>Yoo, Seunghyup</creator><creator>Kang, Jae-Wook</creator><general>Royal Society of Chemistry</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-1412-6179</orcidid></search><sort><creationdate>2018</creationdate><title>Improving light extraction of flexible OLEDs using a mechanically robust Ag mesh/ITO composite electrode and microlens array</title><author>Shin, So-Ra ; Lee, Hock Beng ; Jin, Won-Yong ; Ko, Keum-Jin ; Park, Sunghee ; Yoo, Seunghyup ; Kang, Jae-Wook</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c296t-67e9b7e83b9859ddad86bced9e536f18ae2aa4a43f40c7f3ac8adfdfe5e9b1743</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Bend radius</topic><topic>Diodes</topic><topic>Electrodes</topic><topic>Organic light emitting diodes</topic><topic>Quantum efficiency</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Shin, So-Ra</creatorcontrib><creatorcontrib>Lee, Hock Beng</creatorcontrib><creatorcontrib>Jin, Won-Yong</creatorcontrib><creatorcontrib>Ko, Keum-Jin</creatorcontrib><creatorcontrib>Park, Sunghee</creatorcontrib><creatorcontrib>Yoo, Seunghyup</creatorcontrib><creatorcontrib>Kang, Jae-Wook</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of materials chemistry. 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C, Materials for optical and electronic devices</jtitle><date>2018</date><risdate>2018</risdate><volume>6</volume><issue>20</issue><spage>5444</spage><epage>5452</epage><pages>5444-5452</pages><issn>2050-7526</issn><eissn>2050-7534</eissn><abstract>In this study, we designed a highly flexible, mechanically robust Ag mesh/ITO composite transparent conducting electrode (TCE) integrated with a microlens array (MLA) to improve the light extraction of organic light-emitting diodes (OLEDs). The mechanical flexibility and durability of a flexible OLED based on a Ag mesh/ITO composite TCE were superior to those of a device with a conventional ITO electrode, retaining ∼100% initial luminance for up to 1000 cycles at a bending radius of ∼2 mm. Additionally, both experimental and theoretical characterizations suggest that the performance of a flexible OLED, such as its external quantum efficiency and angular-dependent emission, vastly improves after the incorporation of MLA due to the additional light scattering induced by the MLA. The combined use of Ag mesh and MLA is a practical way to overcome the brittleness of ITO and improve the out-coupling efficiency of flexible OLEDs (enhancement ratio of ∼1.51).</abstract><cop>Cambridge</cop><pub>Royal Society of Chemistry</pub><doi>10.1039/C8TC01415A</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0002-1412-6179</orcidid></addata></record> |
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| identifier | ISSN: 2050-7526 |
| ispartof | Journal of materials chemistry. C, Materials for optical and electronic devices, 2018, Vol.6 (20), p.5444-5452 |
| issn | 2050-7526 2050-7534 |
| language | eng |
| recordid | cdi_proquest_journals_2043386802 |
| source | Royal Society Of Chemistry Journals |
| subjects | Bend radius Diodes Electrodes Organic light emitting diodes Quantum efficiency |
| title | Improving light extraction of flexible OLEDs using a mechanically robust Ag mesh/ITO composite electrode and microlens array |
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