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231225s2017 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201703627
|2 doi
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|a pubmed24n0922.xml
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|a (DE-627)NLM276606175
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|a (NLM)28991386
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Jo, Jea Woong
|e verfasserin
|4 aut
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|a Enhanced Open-Circuit Voltage in Colloidal Quantum Dot Photovoltaics via Reactivity-Controlled Solution-Phase Ligand Exchange
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|c 2017
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 18.07.2018
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|a Date Revised 01.10.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a The energy disorder that arises from colloidal quantum dot (CQD) polydispersity limits the open-circuit voltage (VOC ) and efficiency of CQD photovoltaics. This energy broadening is significantly deteriorated today during CQD ligand exchange and film assembly. Here, a new solution-phase ligand exchange that, via judicious incorporation of reactivity-engineered additives, provides improved monodispersity in final CQD films is reported. It has been found that increasing the concentration of the less reactive species prevents CQD fusion and etching. As a result, CQD solar cells with a VOC of 0.7 V (vs 0.61 V for the control) for CQD films with exciton peak at 1.28 eV and a power conversion efficiency of 10.9% (vs 10.1% for the control) is achieved
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|a Journal Article
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|a colloidal quantum dots
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|a open-circuit voltage
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|a photovoltaics
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|a polydispersity
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|a solution-phase ligand exchange
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|a Kim, Younghoon
|e verfasserin
|4 aut
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|a Choi, Jongmin
|e verfasserin
|4 aut
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|a de Arquer, F Pelayo García
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|4 aut
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|a Walters, Grant
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|4 aut
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|a Sun, Bin
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|4 aut
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|a Ouellette, Olivier
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|4 aut
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|a Kim, Junghwan
|e verfasserin
|4 aut
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|a Proppe, Andrew H
|e verfasserin
|4 aut
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|a Quintero-Bermudez, Rafael
|e verfasserin
|4 aut
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|a Fan, James
|e verfasserin
|4 aut
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|a Xu, Jixian
|e verfasserin
|4 aut
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|a Tan, Chih Shan
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|4 aut
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|a Voznyy, Oleksandr
|e verfasserin
|4 aut
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|a Sargent, Edward H
|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 29(2017), 43 vom: 09. Nov.
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:29
|g year:2017
|g number:43
|g day:09
|g month:11
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|u http://dx.doi.org/10.1002/adma.201703627
|3 Volltext
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