Visible and Near‐Infrared Imaging with Nonfullerene‐Based Photodetectors. Issue 7 (11th June 2018)
- Record Type:
- Journal Article
- Title:
- Visible and Near‐Infrared Imaging with Nonfullerene‐Based Photodetectors. Issue 7 (11th June 2018)
- Main Title:
- Visible and Near‐Infrared Imaging with Nonfullerene‐Based Photodetectors
- Authors:
- Gasparini, Nicola
Gregori, Alberto
Salvador, Michael
Biele, Markus
Wadsworth, Andrew
Tedde, Sandro
Baran, Derya
McCulloch, Iain
Brabec, Christoph J. - Abstract:
- Abstract: The solution‐processed organic photodetectors underpin an emerging technology with inherent implications in the biological sensors and imaging displays. Conventional organic photodiodes, the core element of an organic photodetector, rely mainly on fullerene‐based acceptors, which in combination with high and middle bandgap donors, limit the spectral photosensitivity to the visible range. Even in the case of low bandgap polymers the oscillator strength and thus the extinction coefficient are usually limited in the NIR due to the nature of molecular orbital hybridization. Instead, it is showed that pairing prototypical poly(3‐hexylthiophene) (P3HT) with rhodanine‐benzothiadiazole‐coupled indacenodithiophene (IDTBR), a nonfullerene electron acceptor absorbing beyond 750 nm, as the photoactive material of a simple photodiode results in a highly efficient organic photodetector with a record responsivity of 0.42 A W −1 and external quantum efficiency (EQE) of 69% in the NIR (755 nm). Nonfullerene‐based photodiodes are processed on amorphous silicon active matrix backplanes to realize large area flat panel photodetector imagers able to detect objects under visible and NIR light conditions with an exceptional combination of responsivity, dynamic response and image crosstalk. Abstract : Organic photodetectors (OPD) based on nonfullerene acceptor (IDTBR) are reported that feature low dark current ( J d = 30 nA cm −2 ) and high responsivity of 0.42 A W −1 . Moreover, flatAbstract: The solution‐processed organic photodetectors underpin an emerging technology with inherent implications in the biological sensors and imaging displays. Conventional organic photodiodes, the core element of an organic photodetector, rely mainly on fullerene‐based acceptors, which in combination with high and middle bandgap donors, limit the spectral photosensitivity to the visible range. Even in the case of low bandgap polymers the oscillator strength and thus the extinction coefficient are usually limited in the NIR due to the nature of molecular orbital hybridization. Instead, it is showed that pairing prototypical poly(3‐hexylthiophene) (P3HT) with rhodanine‐benzothiadiazole‐coupled indacenodithiophene (IDTBR), a nonfullerene electron acceptor absorbing beyond 750 nm, as the photoactive material of a simple photodiode results in a highly efficient organic photodetector with a record responsivity of 0.42 A W −1 and external quantum efficiency (EQE) of 69% in the NIR (755 nm). Nonfullerene‐based photodiodes are processed on amorphous silicon active matrix backplanes to realize large area flat panel photodetector imagers able to detect objects under visible and NIR light conditions with an exceptional combination of responsivity, dynamic response and image crosstalk. Abstract : Organic photodetectors (OPD) based on nonfullerene acceptor (IDTBR) are reported that feature low dark current ( J d = 30 nA cm −2 ) and high responsivity of 0.42 A W −1 . Moreover, flat panel imagers able to detect objects under visible and near‐infrared light conditions are realized, opening a bright future for full color detection and image sensing. … (more)
- Is Part Of:
- Advanced materials technologies. Volume 3:Issue 7(2018)
- Journal:
- Advanced materials technologies
- Issue:
- Volume 3:Issue 7(2018)
- Issue Display:
- Volume 3, Issue 7 (2018)
- Year:
- 2018
- Volume:
- 3
- Issue:
- 7
- Issue Sort Value:
- 2018-0003-0007-0000
- Page Start:
- n/a
- Page End:
- n/a
- Publication Date:
- 2018-06-11
- Subjects:
- imager -- large area devices -- near‐infrared detection -- nonfullerene acceptors -- organic photodetectors
Materials science -- Periodicals
Technological innovations -- Periodicals
Materials science
Technological innovations
Periodicals
620.1105 - Journal URLs:
- http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)2365-709X ↗
http://onlinelibrary.wiley.com/ ↗ - DOI:
- 10.1002/admt.201800104 ↗
- Languages:
- English
- ISSNs:
- 2365-709X
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 0696.899900
British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 10525.xml