Transient behaviours of yellow and blue luminescence bands in unintentionally doped GaN | Zendy

Baibin Wang | Zendy; Feng Liang | Zendy; Degang Zhao | Zendy; Yuhao Ben | Zendy; Jing Yang | Zendy; Ping Chen | Zendy; Zongshun Liu | Zendy

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Transient behaviours of yellow and blue luminescence bands in unintentionally doped GaN

Author(s) -

Baibin Wang,

Feng Liang,

Degang Zhao,

Yuhao Ben,

Jing Yang,

Ping Chen,

Zongshun Liu

Publication year - 2021

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.416424

Subject(s) - luminescence , materials science , persistent luminescence , doping , excitation , optics , blueshift , laser , analytical chemistry (journal) , transient (computer programming) , intensity (physics) , laser beams , optoelectronics , photoluminescence , chemistry , physics , thermoluminescence , chromatography , quantum mechanics , computer science , operating system

Yellow Luminescence (YL) band and blue luminescence (BL) band in a studied unintentionally doped GaN sample show a transient behaviour where the observed luminescence intensities change with the exposure time of the sample under 325 nm laser beam excitation at 10-300 K. Such an intensity variation is accompanied with a red-shift for YL peak at 10-140 K and one for BL peak at 140 K. We propose that such behaviours are related to the chemical transformations of YL-related C N and C N O N defects, and BL-related C N -H i and C N O N -H i defects during the exposure.

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