Self-Powered and Low-Noise Perovskite Photodetector Enabled by a Novel Dopant-Free Hole-Transport Material with Bottom Passivation for Underwater Blue Light Communications
Designing dopant-free hole-transport materials (HTMs) is a facile and effective strategy to realize high-performance organic-inorganic hybrid perovskite (OIHP) photodetectors. Herein, a novel phenothiazine polymer, poly[4-(10H-phenothiazin-10-yl)-N,N-bis(4-methoxyphenyl)aniline] (PPZ-TPA), was synthesized and employed as a promising HTM in OIHP photodetectors. The triphenylamine donor unit was combined with a phenothiazine core, furnishing the polymer with a suitable highest occupied molecular orbital level, favorable thermal stability, and appropriate film morphology. The sulfur atom in the phenothiazine functional group can intentionally passivate the undercoordinated Pb2+ of OIHP films, suppressing nonradiative recombination and yielding an ultralow dark current density of 1.26 × 10-7 A cm-2 under -0.1 V, as well as a low-noise current of 3.75 × 10-13 A Hz-1/2 at 70 Hz. Encouragingly, the self-powered PPZ-TPA-based OIHP photodetectors were successfully integrated into a blue light communication system for the first time, demonstrating their application for receiving and transmitting light signals with a transmission rate of 300 bps. In addition, the PPZ-TPA-based devices exhibit nearly 1 year shelf stability without obvious degradation. We believe that PPZ-TPA demonstrates great potential to achieve high-performance perovskite photodetectors, also providing a strategy for the design of novel HTMs.
| 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), 41 vom: 19. Okt., Seite 46809-46818 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
He, Lijuan [VerfasserIn] |
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| Links: |
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| Themen: |
Hole-transporting layers |
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| Anmerkungen: |
Date Revised 20.10.2022 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1021/acsami.2c13746 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM347131050 |
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| 520 | |a Designing dopant-free hole-transport materials (HTMs) is a facile and effective strategy to realize high-performance organic-inorganic hybrid perovskite (OIHP) photodetectors. Herein, a novel phenothiazine polymer, poly[4-(10H-phenothiazin-10-yl)-N,N-bis(4-methoxyphenyl)aniline] (PPZ-TPA), was synthesized and employed as a promising HTM in OIHP photodetectors. The triphenylamine donor unit was combined with a phenothiazine core, furnishing the polymer with a suitable highest occupied molecular orbital level, favorable thermal stability, and appropriate film morphology. The sulfur atom in the phenothiazine functional group can intentionally passivate the undercoordinated Pb2+ of OIHP films, suppressing nonradiative recombination and yielding an ultralow dark current density of 1.26 × 10-7 A cm-2 under -0.1 V, as well as a low-noise current of 3.75 × 10-13 A Hz-1/2 at 70 Hz. Encouragingly, the self-powered PPZ-TPA-based OIHP photodetectors were successfully integrated into a blue light communication system for the first time, demonstrating their application for receiving and transmitting light signals with a transmission rate of 300 bps. In addition, the PPZ-TPA-based devices exhibit nearly 1 year shelf stability without obvious degradation. We believe that PPZ-TPA demonstrates great potential to achieve high-performance perovskite photodetectors, also providing a strategy for the design of novel HTMs | ||
| 650 | 4 | |a Journal Article | |
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| 650 | 4 | |a organic−inorganic hybrid perovskite | |
| 650 | 4 | |a phenothiazine polymer | |
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| 650 | 4 | |a underwater optical communications | |
| 700 | 1 | |a Li, Mubai |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Qi |e verfasserin |4 aut | |
| 700 | 1 | |a Sun, Riming |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Fangfang |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Xuedong |e verfasserin |4 aut | |
| 700 | 1 | |a Wu, Hongbang |e verfasserin |4 aut | |
| 700 | 1 | |a Wei, Wei |e verfasserin |4 aut | |
| 700 | 1 | |a Qin, Tianshi |e verfasserin |4 aut | |
| 700 | 1 | |a Shen, Liang |e verfasserin |4 aut | |
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