{
  "abstract": "Photodetectors sensitive to the near‐infrared (NIR) range are of great importance for applications in machine vision, autonomous driving, and three‐dimensional (3D) imaging under low‐light or adverse weather conditions. Recently, two‐dimensional (2D) semiconductors have emerged as promising light‐absorbing materials for NIR detection. However, the inevitable majority‐carrier injection from the electrode fundamentally leads to high dark current and poor light‐detection capability, which has constrained the development of 2D semiconductor photodetectors so far. Here, we demonstrate a high‐detectivity NIR photodetector based on a MoTe2/WSe2/Cl–SnSe2 unipolar barrier heterostructure. The WSe2 layer acts as an efficient majority‐carrier‐blocking barrier, effectively suppressing dark current and achieving a room‐temperature specific detectivity of 6.75 × 108 Jones, a linear dynamic range of 62 dB, and an effective −3 dB bandwidth approaching 0.1 MHz under 1310 nm illumination. Using this device as an imager, we show 3D NIR imaging of real objects under low‐illumination conditions, highlighting its potential for applications such as vein visualization and material identification.",
  "abstract_shown": true,
  "affiliations": [
    "Center for Quantum Technology Post‐Silicon Semiconductor Institute Korea Institute of Science and Technology (KIST) Seoul Republic of Korea",
    "KU‐KIST Graduate School of Converging Science and Technology Korea University Seoul Republic of Korea",
    "Department of Electrical and Electronic Engineering Yonsei University Seoul Republic of Korea",
    "Department of Electric Engineering Display & Semiconductor Engineering Pukyong National University Busan Republic of Korea",
    "Department of Physics Changwon National University Changwon Republic of Korea",
    "Department of Computer Science and Engineering Korea University Seoul Republic of Korea",
    "Department of Mechanical Engineering Seoul National University Seoul Republic of Korea",
    "Department of Ophthalmology Korea University College of Medicine Guro Hospital Seoul Republic of Korea",
    "Department of Physics Kunsan National University Gunsan Republic of Korea",
    "Department of Electronic and Communication Information Engineering College Hangzhou Dianzi University Hangzhou China",
    "Hologram Research Center Korea Electronics Technology Institute (KETI) Seoul Republic of Korea",
    "Spatial Optical Information Research Center Korea Photonics Technology Institute (KOPTI) Gwangju Republic of Korea",
    "Division of Nanoscience & Technology, KIST School University of Science and Technology (UST) Seoul Republic of Korea"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 22,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Jung Pyo Hong",
      "orcid": "0009-0005-1238-7139"
    },
    {
      "affs": [
        0,
        2
      ],
      "name": "Sang‐Jun Kim",
      "orcid": "0009-0002-9211-5843"
    },
    {
      "affs": [
        3
      ],
      "name": "Jisu Jang"
    },
    {
      "affs": [
        0
      ],
      "name": "Je‐Jun Lee"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Seong‐Jun Han"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Eungseon Yeon",
      "orcid": "0009-0004-6655-4724"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Jung Woo Kim"
    },
    {
      "affs": [
        4
      ],
      "name": "Jongtae Ahn",
      "orcid": "0009-0006-6778-8113"
    },
    {
      "affs": [
        0
      ],
      "name": "Sang Yeon Kim"
    },
    {
      "affs": [
        0,
        5
      ],
      "name": "Hyun Woo Ko"
    },
    {
      "affs": [
        0,
        5
      ],
      "name": "Sunghyun Han",
      "orcid": "0009-0002-1461-8728"
    },
    {
      "affs": [
        6
      ],
      "name": "Seung Ah Lee"
    },
    {
      "affs": [
        5
      ],
      "name": "Paul Hongsuck Seo"
    },
    {
      "affs": [
        7
      ],
      "name": "Young‐Woo Suh"
    },
    {
      "affs": [
        8
      ],
      "name": "Kimoon Lee",
      "orcid": "0000-0002-5989-5633"
    },
    {
      "affs": [
        1
      ],
      "name": "Gunuk Wang",
      "orcid": "0000-0001-6059-0530"
    },
    {
      "affs": [
        9
      ],
      "name": "Dong‐Guang Zheng"
    },
    {
      "affs": [
        10
      ],
      "name": "Sunghee Hong"
    },
    {
      "affs": [
        0
      ],
      "name": "Sangin Hahn"
    },
    {
      "affs": [
        11
      ],
      "name": "Seon Kyu Yoon",
      "orcid": "0000-0002-5050-4675"
    },
    {
      "affs": [
        0
      ],
      "name": "Min‐Chul Park",
      "orcid": "0000-0002-8575-085X"
    },
    {
      "affs": [
        0,
        1,
        12
      ],
      "name": "Do Kyung Hwang",
      "orcid": "0000-0001-8736-9262"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fnpnfhffk714q.bib",
  "cited_by": 0,
  "doi": "10.1002/advs.77017",
  "fulltext_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC13455832/",
  "id": "fnpnfhffk714q",
  "issns": [
    "2198-3844"
  ],
  "landing_url": "https://doi.org/10.1002/advs.77017",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Research Article"
    ],
    [
      "openalex",
      "2505|2D Materials and Applications"
    ]
  ],
  "openalex": "W7202074040",
  "pdf_url": null,
  "pmcid": "PMC13455832",
  "pmid": "42573590",
  "published": "2026-08-10",
  "publisher": "Wiley",
  "ris": "https://research.draconitic.com/paper/fnpnfhffk714q.ris",
  "sources": [
    {
      "first_seen": "2026-11-06T12:23:10Z",
      "native_id": "PMC13455832",
      "source": "pmc",
      "url": "https://doi.org/10.1002/advs.77017"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2505|2D Materials and Applications",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Unipolar Barrier Near‐Infrared 2D Photodetectors for 3D Image Sensors",
  "title_text": "Unipolar Barrier Near‐Infrared 2D Photodetectors for 3D Image Sensors",
  "type": "peer-reviewed",
  "updated_at": "2026-11-07T12:20:29Z",
  "url": "https://research.draconitic.com/paper/fnpnfhffk714q",
  "venue": "Advanced Science",
  "versions": []
}