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Title: Morphology effect of the ZnO surface via organic etchants for photon extraction in III-nitride emitters
Authors: Su, Pei-Chen
Yoon, Yong-Jin
Oh, S.
Kim, S.
Shin, S.-C.
Lee, K. J.
Kim, S.-J.
Choi, H.
Park, S.-J.
Kim, K.-K.
Keywords: Emitter
DRNTU::Engineering::Mechanical engineering
Issue Date: 2016
Source: Oh, S., Kim, S., Shin, S.-C., Su, P.-C., Yoon, Y.-J., Lee, K. J., . . . Kim, K.-K. (2017). Morphology effect of the ZnO surface via organic etchants for photon extraction in III-nitride emitters. ECS Journal of Solid State Science and Technology, 6(1), Q13-Q17. doi:10.1149/2.0131701jss
Series/Report no.: ECS Journal of Solid State Science and Technology
Abstract: We demonstrate that the morphology effect on the ZnO surface using organic acids significantly improves the photon extraction efficiency of III-nitride emitters. Oxalic ((C2H2O4), citric (C6H8O7), and formic (CH2O2) acids were used for modulating the nanostructured surface of the ZnO layer with various shapes, including random nanoblocks, nanoholes, and nanorods. The transmittance of the nanostructured ZnO layer fabricated with formic acid for 3 min was 91% at 450 nm wavelength. The optical output power intensities of the emitters with the nanostructured ZnO surface layer were enhanced by 22.14%, 30.58%, and 22.46% with oxalic, formic, and citric acid, respectively, compared with the emitter with the flat ZnO layer.
ISSN: 2162-8769
Rights: © The Author(s) 2016. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY,, which permits unrestricted reuse of the work in any medium, provided the original work is properly cited. [DOI: 10.1149/2.0131701jss] All rights reserved.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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