Luminescence dynamics of bound exciton of hydrogen doped ZnO nanowires

Yoo, Jinkyoung; Yi, Gyu -Chul; Chon, Bonghwan; Joo, Taiha; Wang, Zhehui

doi:10.1016/j.jlumin.2016.03.026

Luminescence dynamics of bound exciton of hydrogen doped ZnO nanowires

Journal Article · Mon Apr 11 00:00:00 EDT 2016 · Journal of Luminescence

DOI:https://doi.org/10.1016/j.jlumin.2016.03.026· OSTI ID:1248729

Yoo, Jinkyoung ^[1]; Yi, Gyu -Chul ^[2]; Chon, Bonghwan ^[3]; Joo, Taiha ^[3]; Wang, Zhehui ^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Seoul National Univ., Seoul (Republic of Korea)
POSTECH, Pohang (Republic of Korea)

In this study, all-optical camera, converting X-rays into visible photons, is a promising strategy for high-performance X-ray imaging detector requiring high detection efficiency and ultrafast detector response time. Zinc oxide is a suitable material for all-optical camera due to its fast radiative recombination lifetime in sub-nanosecond regime and its radiation hardness. ZnO nanostructures have been considered as proper building blocks for ultrafast detectors with spatial resolution in sub-micrometer scale. To achieve remarkable enhancement of luminescence efficiency n-type doping in ZnO has been employed. However, luminescence dynamics of doped ZnO nanostructures have not been thoroughly investigated whereas undoped ZnO nanostructures have been employed to study their luminescence dynamics. Here we report a study of luminescence dynamics of hydrogen doped ZnO nanowires obtained by hydrogen plasma treatment. Hydrogen doping in ZnO nanowires gives rise to significant increase in the near-band-edge emission of ZnO and decrease in averaged photoluminescence lifetime from 300 to 140 ps at 10 K. The effects of hydrogen doping on the luminescent characteristics of ZnO nanowires were changed by hydrogen doping process variables.

View Accepted Manuscript (DOE)

Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-06NA25396; AC04-94AL85000

OSTI ID:: 1248729

Alternate ID(s):: OSTI ID: 1426294
OSTI ID: 22677711

Report Number(s):: LA-UR--15-22144; PII: S002223131530394X

Journal Information:: Journal of Luminescence, Journal Name: Journal of Luminescence Journal Issue: C Vol. 176; ISSN 0022-2313

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Tuning ZnO nanorods photoluminescence through atmospheric plasma treatments You, Shujie; Patelli, Alessandro; Ghamgosar, Pedram APL Materials, Vol. 7, Issue 8 https://doi.org/10.1063/1.5110984	journal	August 2019

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