Influence of surface morphology on the optical property of vertically aligned ZnO nanorods

Sachindra Nath Das; Jyoti Prakash Kar; Ji Hyuk Choi; S. Byeon; Y. D. Jho; Jae Min Myoung

doi:10.1063/1.3231615

Influence of surface morphology on the optical property of vertically aligned ZnO nanorods

Sachindra Nath Das, Jyoti Prakash Kar, Ji Hyuk Choi, S. Byeon, Y. D. Jho, Jae Min Myoung

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

In this letter we have studied an influence of surface morphology on the optical property of vertically aligned ZnO nanorods. At low temperature the near band edge excitonic emission shows a strong dependence on surface morphology. A prominent and well resolved near band edge photoluminescence (PL) peak was obtained for nanowires with decreasing diameter and thus assigned due to the contributions to the optical properties of individual nanorods. Depending on surface morphology, the difference in low temperature PL property is attributed to the tailing of the density of states due to the potential fluctuations in randomly distributed intrinsic defects.

Original language	English
Article number	111909
Journal	Applied Physics Letters
Volume	95
Issue number	11
DOIs	https://doi.org/10.1063/1.3231615
Publication status	Published - 2009

Bibliographical note

Funding Information:
This research was partly supported by WCU (World Class University) program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology [R32-20031], the IT R&D program of MKE/IITA [2008-F-023-01], and Samsung Electronics Co. Ltd. [Grant No. 2008-8-2105].

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.3231615

Cite this

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title = "Influence of surface morphology on the optical property of vertically aligned ZnO nanorods",

abstract = "In this letter we have studied an influence of surface morphology on the optical property of vertically aligned ZnO nanorods. At low temperature the near band edge excitonic emission shows a strong dependence on surface morphology. A prominent and well resolved near band edge photoluminescence (PL) peak was obtained for nanowires with decreasing diameter and thus assigned due to the contributions to the optical properties of individual nanorods. Depending on surface morphology, the difference in low temperature PL property is attributed to the tailing of the density of states due to the potential fluctuations in randomly distributed intrinsic defects.",

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note = "Funding Information: This research was partly supported by WCU (World Class University) program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology [R32-20031], the IT R&D program of MKE/IITA [2008-F-023-01], and Samsung Electronics Co. Ltd. [Grant No. 2008-8-2105].",

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AU - Kar, Jyoti Prakash

AU - Choi, Ji Hyuk

AU - Byeon, S.

AU - Jho, Y. D.

AU - Myoung, Jae Min

N1 - Funding Information: This research was partly supported by WCU (World Class University) program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology [R32-20031], the IT R&D program of MKE/IITA [2008-F-023-01], and Samsung Electronics Co. Ltd. [Grant No. 2008-8-2105].

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N2 - In this letter we have studied an influence of surface morphology on the optical property of vertically aligned ZnO nanorods. At low temperature the near band edge excitonic emission shows a strong dependence on surface morphology. A prominent and well resolved near band edge photoluminescence (PL) peak was obtained for nanowires with decreasing diameter and thus assigned due to the contributions to the optical properties of individual nanorods. Depending on surface morphology, the difference in low temperature PL property is attributed to the tailing of the density of states due to the potential fluctuations in randomly distributed intrinsic defects.

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Influence of surface morphology on the optical property of vertically aligned ZnO nanorods

Abstract

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