Reverse dark current in organic photodetectors and the major role of traps as source of noise


JSON Export

{
  "id": "644", 
  "metadata": {
    "title": "Reverse dark current in organic photodetectors and the major role of traps as source of noise", 
    "doi": "10.24435/materialscloud:sq-wv", 
    "license": "Creative Commons Attribution 4.0 International", 
    "keywords": [
      "Organic Photodetectors", 
      "Dark current", 
      "Traps", 
      "Detectivity"
    ], 
    "contributors": [
      {
        "affiliations": [
          "Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP) and Institute for Applied Physics, Technische Universit\u00e4t Dresden, N\u00f6thnitzer Str. 61, 01187 Dresden, Germany"
        ], 
        "familyname": "Kublitski", 
        "email": "jonas.kublitski@tu-dresden.de", 
        "givennames": "Jonas"
      }, 
      {
        "affiliations": [
          "Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP) and Institute for Applied Physics, Technische Universit\u00e4t Dresden, N\u00f6thnitzer Str. 61, 01187 Dresden, Germany"
        ], 
        "familyname": "Hofacker", 
        "email": "andreas.hofacker@tu-dresden.de", 
        "givennames": "Andreas"
      }, 
      {
        "affiliations": [
          "Chair of Circuit Design and Network Theory (CCN), Technische Universit\u00e4t Dresden, 01069 Dresden, Germany", 
          "Center for Advancing Electronics Dresden (cfaed), Technische Universit\u00e4t Dresden, 01062 Dresden, Germany"
        ], 
        "familyname": "K. Boroujeni", 
        "givennames": "Bahman"
      }, 
      {
        "affiliations": [
          "Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP) and Institute for Applied Physics, Technische Universit\u00e4t Dresden, N\u00f6thnitzer Str. 61, 01187 Dresden, Germany"
        ], 
        "familyname": "Benduhn", 
        "givennames": "Johannes"
      }, 
      {
        "affiliations": [
          "Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP) and Institute for Applied Physics, Technische Universit\u00e4t Dresden, N\u00f6thnitzer Str. 61, 01187 Dresden, Germany", 
          "Heliatek GmbH, Treidlerstrasse 3, 01139 Dresden, Germany"
        ], 
        "familyname": "C. Nikolis", 
        "givennames": "Vasileios"
      }, 
      {
        "affiliations": [
          "Swansea University, Singleton Park SA2 8PP, Wales, UK"
        ], 
        "familyname": "Kaiser", 
        "givennames": "Christina"
      }, 
      {
        "affiliations": [
          "Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP) and Institute for Applied Physics, Technische Universit\u00e4t Dresden, N\u00f6thnitzer Str. 61, 01187 Dresden, Germany"
        ], 
        "familyname": "Spoltore", 
        "givennames": "Donato"
      }, 
      {
        "affiliations": [
          "Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP) and Institute for Applied Physics, Technische Universit\u00e4t Dresden, N\u00f6thnitzer Str. 61, 01187 Dresden, Germany"
        ], 
        "familyname": "Kleemann", 
        "givennames": "Hans"
      }, 
      {
        "affiliations": [
          "Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP) and Institute for Applied Physics, Technische Universit\u00e4t Dresden, N\u00f6thnitzer Str. 61, 01187 Dresden, Germany"
        ], 
        "familyname": "Fischer", 
        "givennames": "Axel"
      }, 
      {
        "affiliations": [
          "Center for Advancing Electronics Dresden (cfaed), Technische Universit\u00e4t Dresden, 01062 Dresden, Germany"
        ], 
        "familyname": "Ellinger", 
        "givennames": "Frank"
      }, 
      {
        "affiliations": [
          "Instituut voor Materiaalonderzoek (IMO), Hasselt University, Wetenschapspark 1, BE-3590, Diepenbeek, Belgium"
        ], 
        "familyname": "Vandewal", 
        "email": "koen.vandewal@uhasselt.be", 
        "givennames": "Koen"
      }, 
      {
        "affiliations": [
          "Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP) and Institute for Applied Physics, Technische Universit\u00e4t Dresden, N\u00f6thnitzer Str. 61, 01187 Dresden, Germany", 
          "Center for Advancing Electronics Dresden (cfaed), Technische Universit\u00e4t Dresden, 01062 Dresden, Germany"
        ], 
        "familyname": "Leo", 
        "givennames": "Karl"
      }
    ], 
    "_files": [
      {
        "description": "Data related to the above publication", 
        "checksum": "md5:9e33fe2e3a0ba20511a46d727e11f88d", 
        "size": 2336488, 
        "key": "Data_availability.zip"
      }, 
      {
        "description": "Data structure", 
        "checksum": "md5:8b4374aa266048d10ddd4c8c7c5b41dd", 
        "size": 16769, 
        "key": "README.ods"
      }
    ], 
    "references": [
      {
        "type": "Journal reference", 
        "doi": "https://doi.org/10.1038/s41467-020-20856-z", 
        "citation": "J. Kublitski, A. Hofacker, B.K. Boroujeni, et al. Reverse dark current in organic photodetectors and the major role of traps as source of noise. Nat Commun 12, 551 (2021)", 
        "url": "https://www.nature.com/articles/s41467-020-20856-z"
      }
    ], 
    "conceptrecid": "643", 
    "version": 1, 
    "edited_by": 253, 
    "id": "644", 
    "owner": 253, 
    "mcid": "2020.152", 
    "is_last": true, 
    "status": "published", 
    "description": "Organic photodetectors have promising applications in low-cost imaging, health monitoring and near infrared sensing. Recent research on organic photodetectors based on donor-acceptor systems has resulted in narrow-band, flexible and biocompatible devices, of which the best reach external photovoltaic quantum efficiencies approaching 100%. However, the high noise spectral density of these devices limits their specific detectivity to around 10^13 Jones in the visible and several orders of magnitude lower in the near-infrared, severely reducing performance. Here, we show that the shot noise, proportional to the dark current, dominates the noise spectral density, demanding a comprehensive understanding of the dark current. We demonstrate that, in addition to the intrinsic saturation current generated via charge-transfer states, dark current contains a major contribution from trap-assisted generated charges and decreases systematically with decreasing concentration of traps. By modeling the dark current of several donor-acceptor systems, we reveal the interplay between traps and charge-transfer states as source of dark current and show that traps dominate the generation processes, thus being the main limiting factor of organic photodetectors detectivity.", 
    "license_addendum": null, 
    "_oai": {
      "id": "oai:materialscloud.org:644"
    }, 
    "publication_date": "Nov 26, 2020, 11:27:17"
  }, 
  "revision": 6, 
  "updated": "2021-01-26T14:14:23.522472+00:00", 
  "created": "2020-11-17T14:09:25.925250+00:00"
}