ITO/metal/ITO anode for efficient transparent white organic light-emitting diodes
We report on the characteristics of enhanced and balanced white-light emission of transparent organic light emitting diodes (TOLEDs) by introducing anode that has a stack structure of ITO/metal/ITO (IMI). We have investigated an anode that has a stack structure of IMI. IMI anodes are typically compo...
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| Veröffentlicht in: | Japanese Journal of Applied Physics 2015-02, Vol.54 (2S), p.2-1-02BC04-4 |
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| container_end_page | 1-02BC04-4 |
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| container_issue | 2S |
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| container_title | Japanese Journal of Applied Physics |
| container_volume | 54 |
| creator | Joo, Chul Woong Lee, Jonghee Sung, Woo Jin Moon, Jaehyun Cho, Nam Sung Chu, Hye Yong Lee, Jeong-Ik |
| description | We report on the characteristics of enhanced and balanced white-light emission of transparent organic light emitting diodes (TOLEDs) by introducing anode that has a stack structure of ITO/metal/ITO (IMI). We have investigated an anode that has a stack structure of IMI. IMI anodes are typically composed of a thin Ag layer (∼15 nm) sandwiched between two ITO layers (∼50 nm). By inserting an Ag layer it was possible to achieve sheet resistance lower than 3 Ω/sq. and transmittance of 86% at a wavelength of 550 nm. The Ag insert can act as a reflective component. With its counterpart, a transparent cathode made of a thin Ag layer (∼15 nm), micro-cavities (MC) can be effectively induced in the OLED, leading to improved performance. Using an IMI anode, it was possible to significantly increase the current efficiencies. The current efficiencies of the top and the bottom of the IMI TOLED increased to 23.0 and 15.6 cd/A, respectively, while those of the white TOLED with the ITO anode were 20.7 and 5.1 cd/A, respectively. A 30% enhancement in the overall current efficiency was achieved by taking advantage of the MC effect and the low sheet resistance. |
| doi_str_mv | 10.7567/JJAP.54.02BC04 |
| format | Article |
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We have investigated an anode that has a stack structure of IMI. IMI anodes are typically composed of a thin Ag layer (∼15 nm) sandwiched between two ITO layers (∼50 nm). By inserting an Ag layer it was possible to achieve sheet resistance lower than 3 Ω/sq. and transmittance of 86% at a wavelength of 550 nm. The Ag insert can act as a reflective component. With its counterpart, a transparent cathode made of a thin Ag layer (∼15 nm), micro-cavities (MC) can be effectively induced in the OLED, leading to improved performance. Using an IMI anode, it was possible to significantly increase the current efficiencies. The current efficiencies of the top and the bottom of the IMI TOLED increased to 23.0 and 15.6 cd/A, respectively, while those of the white TOLED with the ITO anode were 20.7 and 5.1 cd/A, respectively. A 30% enhancement in the overall current efficiency was achieved by taking advantage of the MC effect and the low sheet resistance.</description><identifier>ISSN: 0021-4922</identifier><identifier>EISSN: 1347-4065</identifier><identifier>DOI: 10.7567/JJAP.54.02BC04</identifier><identifier>CODEN: JJAPB6</identifier><language>eng</language><publisher>The Japan Society of Applied Physics</publisher><subject>Anodes ; Current efficiency ; Electrical resistivity ; Organic light emitting diodes ; Silver ; Stacks ; Thin films ; Transmittance</subject><ispartof>Japanese Journal of Applied Physics, 2015-02, Vol.54 (2S), p.2-1-02BC04-4</ispartof><rights>2015 The Japan Society of Applied Physics</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c407t-e85be7650bb280f4949cf94a787c0c341412e794c1c73163b81aa775b2d2b8b3</citedby><cites>FETCH-LOGICAL-c407t-e85be7650bb280f4949cf94a787c0c341412e794c1c73163b81aa775b2d2b8b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.7567/JJAP.54.02BC04/pdf$$EPDF$$P50$$Giop$$H</linktopdf><link.rule.ids>314,776,780,27903,27904,53824,53871</link.rule.ids></links><search><creatorcontrib>Joo, Chul Woong</creatorcontrib><creatorcontrib>Lee, Jonghee</creatorcontrib><creatorcontrib>Sung, Woo Jin</creatorcontrib><creatorcontrib>Moon, Jaehyun</creatorcontrib><creatorcontrib>Cho, Nam Sung</creatorcontrib><creatorcontrib>Chu, Hye Yong</creatorcontrib><creatorcontrib>Lee, Jeong-Ik</creatorcontrib><title>ITO/metal/ITO anode for efficient transparent white organic light-emitting diodes</title><title>Japanese Journal of Applied Physics</title><addtitle>Jpn. J. Appl. Phys</addtitle><description>We report on the characteristics of enhanced and balanced white-light emission of transparent organic light emitting diodes (TOLEDs) by introducing anode that has a stack structure of ITO/metal/ITO (IMI). We have investigated an anode that has a stack structure of IMI. IMI anodes are typically composed of a thin Ag layer (∼15 nm) sandwiched between two ITO layers (∼50 nm). By inserting an Ag layer it was possible to achieve sheet resistance lower than 3 Ω/sq. and transmittance of 86% at a wavelength of 550 nm. The Ag insert can act as a reflective component. With its counterpart, a transparent cathode made of a thin Ag layer (∼15 nm), micro-cavities (MC) can be effectively induced in the OLED, leading to improved performance. Using an IMI anode, it was possible to significantly increase the current efficiencies. The current efficiencies of the top and the bottom of the IMI TOLED increased to 23.0 and 15.6 cd/A, respectively, while those of the white TOLED with the ITO anode were 20.7 and 5.1 cd/A, respectively. A 30% enhancement in the overall current efficiency was achieved by taking advantage of the MC effect and the low sheet resistance.</description><subject>Anodes</subject><subject>Current efficiency</subject><subject>Electrical resistivity</subject><subject>Organic light emitting diodes</subject><subject>Silver</subject><subject>Stacks</subject><subject>Thin films</subject><subject>Transmittance</subject><issn>0021-4922</issn><issn>1347-4065</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNp1kN9LwzAQx4MoOKevPvdRhXZJmjTt4xz-GoMp7j2kabqltE1NMsT_3pTuUeHg7uDzObgvALcIJoxmbLFeL98TShKIH1eQnIEZSgmLCczoOZhBiFFMCowvwZVzTVgzStAMfLzttotOedEuwhSJ3lQqqo2NVF1rqVXvI29F7wZhx_n7oL2KjN2LXsuo1fuDj1Wnvdf9Pqp0kN01uKhF69TNqc_B7vlpt3qNN9uXt9VyE0sCWbByWiqWUViWOIc1KUgh64IIljMJZUoQQVixgkgkWYqytMyREIzREle4zMt0Du6ms4M1X0flPO-0k6ptRa_M0XGU5ZSFokVAkwmV1jhnVc0HqzthfziCfIyOj9FxSvgUXRAeJkGbgTfmaPvwyP_w_R9w04hhhPDnieNDVae_fnN8PQ</recordid><startdate>20150201</startdate><enddate>20150201</enddate><creator>Joo, Chul Woong</creator><creator>Lee, Jonghee</creator><creator>Sung, Woo Jin</creator><creator>Moon, Jaehyun</creator><creator>Cho, Nam Sung</creator><creator>Chu, Hye Yong</creator><creator>Lee, Jeong-Ik</creator><general>The Japan Society of Applied Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20150201</creationdate><title>ITO/metal/ITO anode for efficient transparent white organic light-emitting diodes</title><author>Joo, Chul Woong ; Lee, Jonghee ; Sung, Woo Jin ; Moon, Jaehyun ; Cho, Nam Sung ; Chu, Hye Yong ; Lee, Jeong-Ik</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c407t-e85be7650bb280f4949cf94a787c0c341412e794c1c73163b81aa775b2d2b8b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Anodes</topic><topic>Current efficiency</topic><topic>Electrical resistivity</topic><topic>Organic light emitting diodes</topic><topic>Silver</topic><topic>Stacks</topic><topic>Thin films</topic><topic>Transmittance</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Joo, Chul Woong</creatorcontrib><creatorcontrib>Lee, Jonghee</creatorcontrib><creatorcontrib>Sung, Woo Jin</creatorcontrib><creatorcontrib>Moon, Jaehyun</creatorcontrib><creatorcontrib>Cho, Nam Sung</creatorcontrib><creatorcontrib>Chu, Hye Yong</creatorcontrib><creatorcontrib>Lee, Jeong-Ik</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Japanese Journal of Applied Physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Joo, Chul Woong</au><au>Lee, Jonghee</au><au>Sung, Woo Jin</au><au>Moon, Jaehyun</au><au>Cho, Nam Sung</au><au>Chu, Hye Yong</au><au>Lee, Jeong-Ik</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>ITO/metal/ITO anode for efficient transparent white organic light-emitting diodes</atitle><jtitle>Japanese Journal of Applied Physics</jtitle><addtitle>Jpn. J. Appl. Phys</addtitle><date>2015-02-01</date><risdate>2015</risdate><volume>54</volume><issue>2S</issue><spage>2</spage><epage>1-02BC04-4</epage><pages>2-1-02BC04-4</pages><issn>0021-4922</issn><eissn>1347-4065</eissn><coden>JJAPB6</coden><abstract>We report on the characteristics of enhanced and balanced white-light emission of transparent organic light emitting diodes (TOLEDs) by introducing anode that has a stack structure of ITO/metal/ITO (IMI). We have investigated an anode that has a stack structure of IMI. IMI anodes are typically composed of a thin Ag layer (∼15 nm) sandwiched between two ITO layers (∼50 nm). By inserting an Ag layer it was possible to achieve sheet resistance lower than 3 Ω/sq. and transmittance of 86% at a wavelength of 550 nm. The Ag insert can act as a reflective component. With its counterpart, a transparent cathode made of a thin Ag layer (∼15 nm), micro-cavities (MC) can be effectively induced in the OLED, leading to improved performance. Using an IMI anode, it was possible to significantly increase the current efficiencies. The current efficiencies of the top and the bottom of the IMI TOLED increased to 23.0 and 15.6 cd/A, respectively, while those of the white TOLED with the ITO anode were 20.7 and 5.1 cd/A, respectively. A 30% enhancement in the overall current efficiency was achieved by taking advantage of the MC effect and the low sheet resistance.</abstract><pub>The Japan Society of Applied Physics</pub><doi>10.7567/JJAP.54.02BC04</doi><tpages>4</tpages></addata></record> |
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| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link |
| subjects | Anodes Current efficiency Electrical resistivity Organic light emitting diodes Silver Stacks Thin films Transmittance |
| title | ITO/metal/ITO anode for efficient transparent white organic light-emitting diodes |
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