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231225s2019 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201807894
|2 doi
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|a pubmed24n0979.xml
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|a DE-627
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|a eng
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| 100 |
1 |
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|a Chen, Wenjun
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Improved Charge Extraction Beyond Diffusion Length by Layer-by-Layer Multistacking Intercalation of Graphene Layers inside Quantum Dots Films
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|c 2019
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|a Text
|b txt
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 05.04.2019
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Charge collection is critical in any photodetector or photovoltaic device. Novel materials such as quantum dots (QDs) have extraordinary light absorption properties, but their poor mobility and short diffusion length limit efficient charge collection using conventional top/bottom contacts. In this work, a novel architecture based on multiple intercalated chemical vapor deposition graphene monolayers distributed in an orderly manner inside a QD film is studied. The intercalated graphene layers ensure that at any point in the absorbing material, photocarriers will be efficiently collected and transported. The devices with intercalated graphene layers have superior quantum efficiency over single-bottom graphene/QD devices, overcoming the known restriction that the diffusion length imposes on film thickness. QD film with increased thickness shows efficient charge collection over the entire λ ≈ 500-1000 nm spectrum. This architecture could be applied to boost the performance of other low-cost materials with poor mobility, allowing efficient collection for films thicker than their diffusion length
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|a Journal Article
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|a charge extraction
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| 650 |
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4 |
|a graphene quantum dots hybrid devices
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| 650 |
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4 |
|a light absorption
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| 650 |
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4 |
|a optoelectronics
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| 700 |
1 |
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|a Castro, Joshua
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ahn, Seungbae
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Xiaochen
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Vazquez-Mena, Oscar
|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 31(2019), 14 vom: 28. Apr., Seite e1807894
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
1 |
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|g volume:31
|g year:2019
|g number:14
|g day:28
|g month:04
|g pages:e1807894
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| 856 |
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|u http://dx.doi.org/10.1002/adma.201807894
|3 Volltext
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