{
  "abstract": "The van der Waals materials have emerged as promising candidates for infrared (IR) photodetectors. Among these, black phosphorus (BP)/ molybdenum disulphide (MoS2) photodiodes have shown high specific detectivity at room‐temperature. The signal‐to‐noise performance of such detectors can be further improved by employing a microlens to increase the total photon collection without changing the device size, and hence its noise current. In this study, we explore the direct integration of refractive microlenses on BP/MoS2 photodiodes, designed for operation at a wavelength of λ = 1.55 µm. The device's photoresponse is enhanced by up to 20× after microlens fabrication, enabling a detectivity of 1.83 × 109 cmHz1/2W−1 under zero‐bias at room‐temperature. Infrared imaging is achieved by integrating the device into a single‐pixel imaging set‐up. This enables a 255 × 192‐pixel image to be resolved from the transmission of a binary mask placed in front of a λ = 1.55 µm light source. These results demonstrate that direct integration of refractive microlenses with van der Waals photodiodes provides a simple and scalable route to enhance detectivity at room‐temperature, enabling practical near‐infrared computational imaging.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Electrical and Electronic Engineering University of Melbourne Melbourne Victoria Australia",
    "School of Physics University of Melbourne Melbourne Victoria Australia",
    "ARC Centre of Excellence for Transformative Meta‐Optical System (TMOS) University of Melbourne Melbourne Victoria Australia",
    "Nanoscience Lab School of Chemistry University of Melbourne Parkville Victoria Australia"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 12,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Varsha Ashwin Vedaraj",
      "orcid": "0009-0004-1598-082X"
    },
    {
      "affs": [
        0
      ],
      "name": "Daniel Fan",
      "orcid": "0000-0002-9765-3379"
    },
    {
      "affs": [
        0
      ],
      "name": "Jinyuan Chen"
    },
    {
      "affs": [
        0,
        1,
        2
      ],
      "name": "Seyed Saleh Mousavi Khaleghi",
      "orcid": "0000-0002-1130-5788"
    },
    {
      "affs": [
        0
      ],
      "name": "Luke Philpott",
      "orcid": "0009-0009-2500-8184"
    },
    {
      "affs": [
        0
      ],
      "name": "Yuchen Sun",
      "orcid": "0009-0008-0469-0412"
    },
    {
      "affs": [
        0
      ],
      "name": "Shifan Wang"
    },
    {
      "affs": [
        3
      ],
      "name": "Shi Tang"
    },
    {
      "affs": [
        0
      ],
      "name": "Robert Delaney"
    },
    {
      "affs": [
        0
      ],
      "name": "Alexander Corletto",
      "orcid": "0000-0001-6021-923X"
    },
    {
      "affs": [
        0,
        1,
        2
      ],
      "name": "Kenneth B. Crozier",
      "orcid": "0000-0003-0947-001X"
    },
    {
      "affs": [
        0
      ],
      "name": "James Bullock",
      "orcid": "0000-0001-7903-9642"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1wd49pefz52cd.bib",
  "cited_by": 0,
  "doi": "10.1002/smll.75405",
  "fulltext_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC13725410/",
  "id": "1wd49pefz52cd",
  "issns": [
    "1613-6810",
    "1613-6829"
  ],
  "landing_url": "https://doi.org/10.1002/smll.75405",
  "language": "en",
  "licence": "CC-BY-NC-4.0",
  "licence_label": "CC BY-NC 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Research Article"
    ],
    [
      "openalex",
      "2505|2D Materials and Applications"
    ]
  ],
  "openalex": "W7204119459",
  "pdf_url": "https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/smll.75405",
  "pmcid": "PMC13725410",
  "pmid": "42635960",
  "published": "2026-08-24",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/1wd49pefz52cd.ris",
  "sources": [
    {
      "first_seen": "2026-11-04T12:23:49Z",
      "native_id": "PMC13725410",
      "source": "pmc",
      "url": "https://doi.org/10.1002/smll.75405"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2505|2D Materials and Applications",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Integration of Refractive Microlenses on BP/MoS2 Photodiodes for Enhanced Infrared Photodetection",
  "title_text": "Integration of Refractive Microlenses on BP/MoS2 Photodiodes for Enhanced Infrared Photodetection",
  "type": "peer-reviewed",
  "updated_at": "2026-11-06T12:21:41Z",
  "url": "https://research.draconitic.com/paper/1wd49pefz52cd",
  "venue": "Small (Weinheim an Der Bergstrasse, Germany)",
  "versions": []
}