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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202208332
|2 doi
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|a eng
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|a Asor, Lior
|e verfasserin
|4 aut
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|a Zn-Doped P-Type InAs Nanocrystal Quantum Dots
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|c 2023
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 03.02.2023
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|a Date Revised 03.02.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2022 The Authors. Advanced Materials published by Wiley-VCH GmbH.
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|a Doped heavy metal-free III-V semiconductor nanocrystal quantum dots (QDs) are of great interest both from the fundamental aspects of doping in highly confined structures, and from the applicative side of utilizing such building blocks in the fabrication of p-n homojunction devices. InAs nanocrystals (NCs), that are of particular relevance for short-wave IR detection and emission applications, manifest heavy n-type character poising a challenge for their transition to p-type behavior. The p-type doping of InAs NCs is presented with Zn - enabling control over the charge carrier type in InAs QDs field effect transistors. The post-synthesis doping reaction mechanism is studied for Zn precursors with varying reactivity. Successful p-type doping is achieved by the more reactive precursor, diethylzinc. Substitutional doping by Zn2+ replacing In3+ is established by X-ray absorption spectroscopy analysis. Furthermore, enhanced near infrared photoluminescence is observed due to surface passivation by Zn as indicated from elemental mapping utilizing high-resolution electron microscopy corroborated by X-ray photoelectron spectroscopy study. The demonstrated ability to control the carrier type, along with the improved emission characteristics, paves the way towards fabrication of optoelectronic devices active in the short-wave infrared region utilizing heavy-metal free nanocrystal building blocks
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|a Journal Article
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|a Near infrared
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|a colloidal InAs quantum dots
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|a doping
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|a heavy metal-free
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|a printed electronics
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1 |
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|a Liu, Jing
|e verfasserin
|4 aut
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1 |
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|a Xiang, Shuting
|e verfasserin
|4 aut
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| 700 |
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|a Tessler, Nir
|e verfasserin
|4 aut
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|a Frenkel, Anatoly I
|e verfasserin
|4 aut
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|a Banin, Uri
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 35(2023), 5 vom: 01. Feb., Seite e2208332
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:35
|g year:2023
|g number:5
|g day:01
|g month:02
|g pages:e2208332
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|u http://dx.doi.org/10.1002/adma.202208332
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