Model To Determine a Distinct Rate Constant for Carrier Multiplication from Experiments.
Journal
ACS applied energy materials
ISSN: 2574-0962
Titre abrégé: ACS Appl Energy Mater
Pays: United States
ID NLM: 101718976
Informations de publication
Date de publication:
28 Jan 2019
28 Jan 2019
Historique:
received:
18
10
2018
accepted:
13
12
2018
entrez:
5
2
2019
pubmed:
5
2
2019
medline:
5
2
2019
Statut:
ppublish
Résumé
Carrier multiplication (CM) is the process in which multiple electron-hole pairs are created upon absorption of a single photon in a semiconductor. CM by an initially hot charge carrier occurs in competition with cooling by phonon emission, with the respective rates determining the CM efficiency. Up until now, CM rates have only been calculated theoretically. We show for the first time how to extract a distinct CM rate constant from experimental data of the relaxation time of hot charge carriers and the yield of CM. We illustrate this method for PbSe quantum dots. Additionally, we provide a simplified method using an estimated energy loss rate to estimate the CM rate constant just above the onset of CM, when detailed experimental data of the relaxation time is missing.
Identifiants
pubmed: 30714025
doi: 10.1021/acsaem.8b01779
pmc: PMC6354726
doi:
Types de publication
Journal Article
Langues
eng
Pagination
721-728Déclaration de conflit d'intérêts
The authors declare no competing financial interest.
Références
Nano Lett. 2006 Oct;6(10):2191-5
pubmed: 17034081
Nano Lett. 2006 Dec;6(12):2728-35
pubmed: 17163696
Angew Chem Int Ed Engl. 2007;46(25):4630-60
pubmed: 17525914
Nano Lett. 2008 Jun;8(6):1713-8
pubmed: 18489170
Science. 2009 Sep 11;325(5946):1367-71
pubmed: 19745146
Nano Lett. 2010 Jul 14;10(7):2498-505
pubmed: 20550102
Nano Lett. 2010 Aug 11;10(8):3019-27
pubmed: 20698615
Phys Rev Lett. 2011 May 20;106(20):207401
pubmed: 21668261
Nano Lett. 2011 Oct 12;11(10):4485-9
pubmed: 21939229
Nano Lett. 2012 Feb 8;12(2):622-8
pubmed: 22148950
Science. 2011 Dec 16;334(6062):1530-3
pubmed: 22174246
Nano Lett. 2012 Mar 14;12(3):1588-91
pubmed: 22335631
Nano Lett. 2013 Mar 13;13(3):1092-9
pubmed: 23360573
Acc Chem Res. 2013 Jun 18;46(6):1261-9
pubmed: 23530867
Nat Commun. 2013;4:2360
pubmed: 23974282
Nat Commun. 2014 Apr 30;5:3789
pubmed: 24781188
ACS Nano. 2015 Jan 27;9(1):778-88
pubmed: 25565396
J Phys Chem Lett. 2013 Jun 20;4(12):2061-8
pubmed: 26283253
Nat Commun. 2015 Sep 28;6:8259
pubmed: 26411283
ACS Nano. 2016 Jan 26;10(1):695-703
pubmed: 26654878
Nanomaterials (Basel). 2013 Dec 24;4(1):19-45
pubmed: 28348283
ACS Nano. 2017 Jun 27;11(6):6286-6294
pubmed: 28558190
Materials (Basel). 2017 Sep 18;10(9):null
pubmed: 28927007
Nat Nanotechnol. 2017 Dec;12(12):1134-1139
pubmed: 28991242
ACS Nano. 2018 Jan 23;12(1):378-384
pubmed: 29241008
ACS Nano. 2018 May 22;12(5):4796-4802
pubmed: 29664600