Evidence map›Paper›PMID 34880247›Full record

ArticleNature communications2021

Deep-ultraviolet electroluminescence and photocurrent generation in graphene/hBN/graphene heterostructures.

Su-Beom Song, Sangho Yoon, So Young Kim, Sera Yang, Seung-Young Seo, Soonyoung Cha, Hyeon-Woo Jeong, Kenji Watanabe, Takashi Taniguchi, Gil-Ho Lee and 3 more

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
3.8field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 70 citations in OpenAlex.

  1. Article
  2. Deep-UV Light-Emitting Based on the hBN:S/hBN: Mg Homojunction.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Article
  3. Review
  4. Article
  5. Review
  6. A hBN/GaScientific reports · 2024
    Article
  7. Article
  8. Article
  9. Article
  10. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors at 2 institutions in 2 countries.

Su-Beom Song *Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea.
Sangho Yoon *Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea.
So Young KimDepartment of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea.
Sera YangDepartment of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea.
Seung-Young SeoDepartment of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea.
Soonyoung ChaDepartment of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea.
Hyeon-Woo JeongDepartment of Physics, Pohang University of Science and Technology, Pohang, Republic of Korea.
Kenji WatanabeResearch Center for Functional Materials, National Institute for Materials Science, Tsukuba, Ibaraki, Japan.ORCID http://orcid.org/0000-0003-3701-8119
Takashi TaniguchiInternational Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba, Ibaraki, Japan.ORCID http://orcid.org/0000-0002-1467-3105
Gil-Ho LeeDepartment of Physics, Pohang University of Science and Technology, Pohang, Republic of Korea.ORCID http://orcid.org/0000-0002-7619-8979
Jun Sung KimCenter for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang, Republic of Korea.ORCID http://orcid.org/0000-0002-1413-7265
Moon-Ho JoDepartment of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea.ORCID http://orcid.org/0000-0002-3160-358X
Jonghwan KimDepartment of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea. jonghwankim@postech.ac.kr.
Pohang University of Science and Technology · KRNational Institute for Materials Science · JP

Funding

Institute for Basic Science (IBS) IBS-R014-A1
6 · The paper itself

Abstract

Hexagonal boron nitride (hBN) is a van der Waals semiconductor with a wide bandgap of ~ 5.96 eV. Despite the indirect bandgap characteristics of hBN, charge carriers excited by high energy electrons or photons efficiently emit luminescence at deep-ultraviolet (DUV) frequencies via strong electron-phonon interaction, suggesting potential DUV light emitting device applications. However, electroluminescence from hBN has not been demonstrated at DUV frequencies so far. In this study, we report DUV electroluminescence and photocurrent generation in graphene/hBN/graphene heterostructures at room temperature. Tunneling carrier injection from graphene electrodes into the band edges of hBN enables prominent electroluminescence at DUV frequencies. On the other hand, under DUV laser illumination and external bias voltage, graphene electrodes efficiently collect photo-excited carriers in hBN, which generates high photocurrent. Laser excitation micro-spectroscopy shows that the radiative recombination and photocarrier excitation processes in the heterostructures mainly originate from the pristine structure and the stacking faults in hBN. Our work provides a pathway toward efficient DUV light emitting and detection devices based on hBN.

Identifiers

PMID34880247
PMCPMC8654827
OpenAlexW3215313793

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.