Double-Layered Strategy for Broadband Photomultiplication-Type Organic Photodetectors and Achieving Narrowband Response in Violet, Red, and Near-Infrared Light
Broadband photomultiplication-type organic photodetectors (PM-OPDs) were prepared with PMBBDT:PY3Se-2V (1:1, wt/wt) as the absorbing layer (AL) and PC71BM:P3HT (100:5, wt/wt) as the photomultiplication layer (PML) on the basis of the sandwich structure. The incident photons from ultraviolet light to the near-infrared region can be harvested by AL. The rather less P3HT in PML can produce plenty of isolated hole traps with P3HT surrounded by PC71BM; the electron tunneling injection induced by trapped holes near the Ag electrode can lead to the photomultiplication (PM) phenomenon. The performance of PM-OPDs can be effectively improved by optimizing the AL thickness. The optimal PM-OPDs exhibit a broad spectral response from 300 to 1050 nm as well as an external quantum efficiency (EQE) of 5800% at 340 nm at 10 V bias, along with a specific detectivity (D*) of 3.78 × 1013 Jones. The spectral response of PM-OPDs is controlled by the trapped-hole distribution near the Ag electrode, primarily originating from the photogenerated holes in AL. To further optimize the spectral response of PM-OPDs, the optical filter layer (OFL) was used to manipulate light field distribution in AL. The violet, red, and near-infrared-light PM-OPDs were developed by employing different OFLs.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:14 |
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| Enthalten in: |
ACS applied materials & interfaces - 14(2022), 40 vom: 12. Okt., Seite 45636-45643 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Liu, Ming [VerfasserIn] |
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| Links: |
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| Themen: |
Broadband |
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| Anmerkungen: |
Date Revised 12.10.2022 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1021/acsami.2c12154 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM346882842 |
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| 520 | |a Broadband photomultiplication-type organic photodetectors (PM-OPDs) were prepared with PMBBDT:PY3Se-2V (1:1, wt/wt) as the absorbing layer (AL) and PC71BM:P3HT (100:5, wt/wt) as the photomultiplication layer (PML) on the basis of the sandwich structure. The incident photons from ultraviolet light to the near-infrared region can be harvested by AL. The rather less P3HT in PML can produce plenty of isolated hole traps with P3HT surrounded by PC71BM; the electron tunneling injection induced by trapped holes near the Ag electrode can lead to the photomultiplication (PM) phenomenon. The performance of PM-OPDs can be effectively improved by optimizing the AL thickness. The optimal PM-OPDs exhibit a broad spectral response from 300 to 1050 nm as well as an external quantum efficiency (EQE) of 5800% at 340 nm at 10 V bias, along with a specific detectivity (D*) of 3.78 × 1013 Jones. The spectral response of PM-OPDs is controlled by the trapped-hole distribution near the Ag electrode, primarily originating from the photogenerated holes in AL. To further optimize the spectral response of PM-OPDs, the optical filter layer (OFL) was used to manipulate light field distribution in AL. The violet, red, and near-infrared-light PM-OPDs were developed by employing different OFLs | ||
| 650 | 4 | |a Journal Article | |
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| 650 | 4 | |a organic photodetectors | |
| 650 | 4 | |a photomultiplication type | |
| 650 | 4 | |a tunable spectral response | |
| 700 | 1 | |a Fan, Qunping |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Jian |e verfasserin |4 aut | |
| 700 | 1 | |a Lin, Francis |e verfasserin |4 aut | |
| 700 | 1 | |a Zhao, Zijin |e verfasserin |4 aut | |
| 700 | 1 | |a Yang, Kaixuan |e verfasserin |4 aut | |
| 700 | 1 | |a Zhao, Xingchao |e verfasserin |4 aut | |
| 700 | 1 | |a Zhou, Zhengji |e verfasserin |4 aut | |
| 700 | 1 | |a Jen, Alex K-Y |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Fujun |e verfasserin |4 aut | |
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