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240708s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202404597
|2 doi
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|a pubmed24n1538.xml
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|a DE-627
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|e rakwb
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|a eng
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|a Kim, Myeong In
|e verfasserin
|4 aut
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|a Vertically Phase Separated Photomultiplication Organic Photodetectors with p-n Heterojunction Type Ultrafast Dynamic Characteristics
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 18.09.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2024 Wiley‐VCH GmbH.
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|a Photomultiplication (PM)-type organic photodetectors (OPDs), which typically form a homogeneous distribution (HD) of n-type dopants in a p-type polymer host (HD PM-type OPDs), have achieved a breakthrough in device responsivity by surpassing a theoretical limit of external quantum efficiency (EQE). However, they face limitations in higher dark current and slower dynamic characteristics compared to p-n heterojunction (p-n HJ) OPDs due to inherent long lifetime of trapped electrons. To overcome this, a new PM-type OPD is developed that demonstrates ultrafast dynamic properties through a vertical phase separation (VPS) strategy between the p-type polymer and n-type acceptor, referred to as VPS PM-type OPDs. Notably, VPS PM-type OPDs show three orders of magnitude increase in -3 dB cut-off frequency (120 kHz) and over a 200-fold faster response time (rising time = 4.8 µs, falling time = 8.3 µs) compared to HD PM-type OPDs, while maintaining high EQE of 1121% and specific detectivity of 2.53 × 1013 Jones at -10 V. The VPS PM-type OPD represents a groundbreaking advancement by demonstrating the coexistence of p-n HJ and PM modes within a single photoactive layer for the first time. This innovative approach holds the potential to enhance both static and dynamic properties of OPDs
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|a Journal Article
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|a fast dynamic property
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|a organic photodetector
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|a photomultiplication
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|a p‐n heterojunction characteristic
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|a vertical phase separation
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|a Lee, Soonyong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kang, Jinhyeon
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kim, Jaehyeong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wu, Ziang
|e verfasserin
|4 aut
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| 700 |
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|a Won, Jong Ho
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Baek, Seyeon
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chung, Dae Sung
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kim, Jin Young
|e verfasserin
|4 aut
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| 700 |
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|a Jung, In Hwan
|e verfasserin
|4 aut
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| 700 |
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|a Woo, Han Young
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 36(2024), 36 vom: 18. Sept., Seite e2404597
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:36
|g year:2024
|g number:36
|g day:18
|g month:09
|g pages:e2404597
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|u http://dx.doi.org/10.1002/adma.202404597
|3 Volltext
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