Flexible and transparent metallic grid electrodes prepared by evaporative assembly

Jae Hoon Park, Dong Yun Lee, Young Hoon Kim, Jung Kyu Kim, Jung Heon Lee, Jong Hyeok Park, Tae Woo Lee, Jeong Ho Cho

Research output: Contribution to journalArticlepeer-review

100 Citations (Scopus)

Abstract

We propose a novel approach to fabricating flexible transparent metallic grid electrodes via evaporative deposition involving flow-coating. A transparent flexible metal grid electrode was fabricated through four essential steps including: (i) polymer line pattern formation on the thermally evaporated metal layer onto a plastic substrate; (ii) rotation of the stage by 90° and the formation of the second polymer line pattern; (iii) etching of the unprotected metal region; and (iv) removal of the residual polymer from the metal grid pattern. Both the metal grid width and the spacing were systematically controlled by varying the concentration of the polymer solution and the moving distance between intermittent stop times of the polymer blade. The optimized Au grid electrodes exhibited an optical transmittance of 92% at 550 nm and a sheet resistance of 97 ω/sq. The resulting metallic grid electrodes were successfully applied to various organic electronic devices, such as organic field-effect transistors (OFETs), organic light-emitting diodes (OLEDs), and organic solar cells (OSCs).

Original languageEnglish
Pages (from-to)12380-12387
Number of pages8
JournalACS Applied Materials and Interfaces
Volume6
Issue number15
DOIs
Publication statusPublished - 2014 Aug 13

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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