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. 2021 Feb 24;7(9):eabd9715. doi: 10.1126/sciadv.abd9715

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Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 4 — (A) Optical photographs of is-OLEDs with a large device area at applied V of 9.5 V. (B) Optical photographs of is-OLEDs being poked by a ballpoint pen with a tip radius of 0.7 mm at applied V of 9.5 V. The dashed line defines the device area. (C) Optical photographs of is-OLEDs based on red (at applied V of 12 V), green (at applied V of 12 V), and blue light-emitting polymers (at applied V of 8 V). The possibility of applying is-OLEDs to deformable displays with various form factors is shown. Photo credits (A to C): Jin-Hoon Kim, Yonsei University.