Seo, Tae Hoon Lee, Seula Min, Kyung Hyun Chandramohan, S. Park, Ah Hyun Lee, Gun Hee Park, Min Suh, Eun-Kyung Kim, Myung Jong 2024-01-20T04:00:33Z 2024-01-20T04:00:33Z 2021-09-04 2016-07-08 2045-2322 https://pubs.kist.re.kr/handle/201004/123875 This paper reports a highly reliable transparent conductive electrode (TCE) that integrates silver nanowires (AgNWs) and high-quality graphene as a protecting layer. Graphene with minimized defects and large graphene domains has been successfully obtained through a facile two-step growth approach. Ultraviolet light emitting diodes (UV-LEDs) were fabricated with AgNWs or hybrid electrodes where AgNWs were combined with two-step grown graphene (A-2GE) or conventional one-step grown graphene (A-1GE). The device performance and reliability of the UV-LEDs with three different electrodes were compared. The A-2GE offered high figure of merit owing to the excellent UV transmittance and reduced sheet resistance. As a consequence, the UV-LEDs made with A-2GE demonstrated reduced forward voltage, enhanced electroluminescence (EL) intensity, and alleviated efficiency droop. The effects of joule heating and UV light illumination on the electrode stability were also studied. The present findings prove superior performance of the A-2GE under high current injection and continuous operation of UV LED, compared to other electrodes. From our observation, the A-2GE would be a reliable TCE for high power UV-LEDs. English NATURE PUBLISHING GROUP CONTACTS NETWORK LAYER FILMS The role of graphene formed on silver nanowire transparent conductive electrode in ultra-violet light emitting diodes Article 10.1038/srep29464 1 SCIENTIFIC REPORTS, v.6 SCIENTIFIC REPORTS 6 scie scopus 000379622500001 2-s2.0-84977667299 Multidisciplinary Sciences Science & Technology - Other Topics Article CONTACTS NETWORK LAYER FILMS graphene transparent electrode