Spatially resolved current density distribution in GaN-based flip-chip green mini-LEDs by microscopic hyperspectral imaging and modified two-level modeling Article Swipe
Yi Lin
,
Jingyu Deng
,
Qiyao Li
,
Xi Zheng
,
Lihong Zhu
,
Weijie Guo
,
Yue Lin
,
Zhong Chen
,
Yijun Lü
·
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.1364/oe.518301
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.1364/oe.518301
A modified two-level model is proposed to study the spatially resolved current density distribution of GaN-based green miniaturized light-emitting diodes (mini-LEDs), combining with microscopic hyperspectral imaging. We found that the spatially resolved current density distribution reveals both the radiative and non-radiative recombination mappings, which can also be provided separately by this model. In addition, higher current density is not necessarily correlated with higher photon emission, especially for the regions around the electrode edges, where the high current density suggests current crowding and defect-related non-radiative recombination. The current density distribution of mini-LEDs is further verified by the laser-beam-induced current (LBIC) and the spatially resolved mappings of peak wavelength and FWHM. The modified two-level model also offers radiative/non-radiative mappings and is proved to be beneficial to determine the micro-zone current density distribution and to reveal the intrinsic radiative/non-radiative recombination mechanism of mini-LEDs.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1364/oe.518301
- OA Status
- gold
- References
- 25
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4391692724
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Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4391692724Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1364/oe.518301Digital Object Identifier
- Title
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Spatially resolved current density distribution in GaN-based flip-chip green mini-LEDs by microscopic hyperspectral imaging and modified two-level modelingWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2024Year of publication
- Publication date
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2024-02-09Full publication date if available
- Authors
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Yi Lin, Jingyu Deng, Qiyao Li, Xi Zheng, Lihong Zhu, Weijie Guo, Yue Lin, Zhong Chen, Yijun LüList of authors in order
- Landing page
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https://doi.org/10.1364/oe.518301Publisher landing page
- Open access
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YesWhether a free full text is available
- OA status
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goldOpen access status per OpenAlex
- OA URL
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https://doi.org/10.1364/oe.518301Direct OA link when available
- Concepts
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Radiative transfer, Light-emitting diode, Current crowding, Current density, Optics, Materials science, Spontaneous emission, Optoelectronics, Current (fluid), Indium gallium nitride, Physics, Wavelength, Laser, Quantum well, Quantum mechanics, ThermodynamicsTop concepts (fields/topics) attached by OpenAlex
- Cited by
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0Total citation count in OpenAlex
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25Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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