Online citations, reference lists, and bibliographies.
← Back to Search

Simultaneous Probing Of Nanocrystal (NC)-ligand Interaction-induced Charge Transfer/transport Properties At The Electron Donor (lead Selenide NC)/acceptor (zinc Oxide) Functional Interface

Byoungnam Park, H. Ko, Minkyong Kim
Published 2019 · Materials Science

Save to my Library
Download PDF
Analyze on Scholarcy
Share
Abstract Understanding correlation between interfacial charge transfer and transport at the electron donor/acceptor functional interface has remained elusive despite its impact on the optoelectronic devices because the conventional vertically stacked diode structure as well as energetic and morphological disorder at the interface complicates analysis of the interfacial region. We fabricated a test platform to enable simultaneous probing of charge transfer and transport at the nanocrystal (NC)/metal oxide interface. Using the transmission line method (TLM) in a ZnO/PbSe/ZnO test structure, we measured the ZnO/PbSe contact resistance from which interfacial charge transfer and transport properties can be correlated in relation to interfacial energetics depending on the size of PbSe NC. The interfacial transfer-transport test probe was validated by comparing size dependent energy level offset derived from the contact resistance value with the established trend. Importantly, by altering the chemical nature of the molecules attached to the NC surface, we discovered that charge transport properties including mobility in the PbSe channel away from the interface are extended into the interfacial region, enabling correlation between carrier diffusion and the electrical mobility at the electron donor/acceptor interface. With a very low mobility in the interface region, charge transfer associated with carrier diffusion is suggested to reflect the nature of energetic disordered interfacial region rather than the electrical mobility.
This paper references
10.1021/nn403190s
Charge trapping dynamics in PbS colloidal quantum dot photovoltaic devices.
A. Bakulin (2013)
10.1002/anie.200705109
Light-emitting diodes with semiconductor nanocrystals.
A. Rogach (2008)
10.1126/science.1209845
Peak External Photocurrent Quantum Efficiency Exceeding 100% via MEG in a Quantum Dot Solar Cell
Octavi E. Semonin (2011)
10.1126/science.1191462
Multiple Exciton Collection in a Sensitized Photovoltaic System
J. Sambur (2010)
10.1038/NMAT1299
Solution-processed PbS quantum dot infrared photodetectors and photovoltaics
S. A. McDonald (2005)
10.1126/science.1185509
Hot-Electron Transfer from Semiconductor Nanocrystals
W. Tisdale (2010)
10.1021/CR050140X
Charge transport in organic semiconductors.
V. Coropceanu (2007)
10.1103/PHYSREVLETT.16.356
Richardson-Schottky Effect in Insulators
P. R. Emtage (1966)
10.1016/j.apsusc.2004.05.084
Barrier formation at metal-organic interfaces: dipole formation and the charge neutrality level
H. Vazquez (2004)
10.1021/nl901930g
PbSe nanocrystal excitonic solar cells.
J. Choi (2009)
10.1021/nn201681s
Size-dependent valence and conduction band-edge energies of semiconductor nanocrystals.
J. Jasieniak (2011)
10.1016/J.TSF.2012.04.048
Retraction notice to “Advances in colloidal quantum dot solar cells: The depleted-heterojunction device” [Thin Solid Films 519 (2011) 7351–7355]
Illan J. Kramer (2012)
10.1021/nl0732171
Tuning energetic levels in nanocrystal quantum dots through surface manipulations.
Michal Soreni-Harari (2008)
10.1016/S0009-2614(98)01277-9
Charge injection and recombination at the metal–organic interface
J. Scott (1999)
10.1364/OE.18.00A451
Dead zones in colloidal quantum dot photovoltaics: evidence and implications.
D. A. Barkhouse (2010)
10.1021/nn300707d
Charge trapping in bright and dark states of coupled PbS quantum dot films.
Jianbo Gao (2012)
10.1021/nn2039164
Enhanced mobility-lifetime products in PbS colloidal quantum dot photovoltaics.
K. S. Jeong (2012)
10.1021/nn203438u
Colloidal quantum dot photovoltaics: a path forward.
Illan J. Kramer (2011)
10.1016/J.SOLENER.2011.02.005
Colloidal quantum dot solar cells
Saim Emin (2011)
10.1021/ja909172p
Transient optical studies of interfacial charge transfer at nanostructured metal oxide/PbS quantum dot/organic hole conductor heterojunctions.
Henry C. Leventis (2010)
10.1021/nl101284k
Dependence of carrier mobility on nanocrystal size and ligand length in PbSe nanocrystal solids.
Y. Liu (2010)
10.1116/1.1559919
Metal–organic interface and charge injection in organic electronic devices
J. Scott (2003)
10.1021/nn100335g
Depleted-heterojunction colloidal quantum dot solar cells.
A. Pattantyus-Abraham (2010)
10.1039/B821698C
Nanoscale design to enable the revolution in renewable energy
J. Baxter (2009)
10.1021/nl200718w
Control of electron transfer from lead-salt nanocrystals to TiO₂.
Byung-Ryool Hyun (2011)
10.1021/cr900289f
Semiconductor quantum dots and quantum dot arrays and applications of multiple exciton generation to third-generation photovoltaic solar cells.
A. Nozik (2010)
10.1063/1.2168515
Fermi-level pinning at conjugated polymer interfaces
C. Tengstedt (2006)
10.1039/C1EE02279B
Solution-processed colloidal quantum dot photovoltaics: A perspective
R. Debnath (2011)
10.1126/SCIENCE.1068153
Efficient Near-Infrared Polymer Nanocrystal Light-Emitting Diodes
N. Tessler (2002)
10.1021/ar9001069
Semiconductor nanocrystals: structure, properties, and band gap engineering.
A. M. Smith (2010)
10.1103/PHYSREVLETT.86.3867
Mobility-dependent charge injection into an organic semiconductor.
Y. Shen (2001)
10.1016/S0379-6779(02)00398-3
Charge carrier transport in organic semiconductors
N. Karl (2003)
10.1016/S0921-5107(00)00604-8
Recent Advances in ZnO Materials and Devices
D. Look (2001)
10.1021/cr900137k
Prospects of colloidal nanocrystals for electronic and optoelectronic applications.
D. Talapin (2010)
10.1021/nn100131w
Effect of air exposure on surface properties, electronic structure, and carrier relaxation in PbSe nanocrystals.
M. Sykora (2010)
10.1038/nnano.2012.127
Hybrid passivated colloidal quantum dot solids.
A. Ip (2012)
10.1002/adma.201101065
Depleted bulk heterojunction colloidal quantum dot photovoltaics.
D. A. Barkhouse (2011)
10.1109/JPROC.2009.2025612
Solution-Processed Quantum Dot Photodetectors
G. Konstantatos (2009)
10.1103/PHYSREVB.59.10885
Exciton dissociation charge transport, and recombination in ultra thin, conjugated polymer-TiO2 nanocrystal intermixed composites
J. S. Salafsky (1999)
10.1038/NPHOTON.2012.33
Colloidal quantum dot solar cells
E. Sargent (2012)
10.1021/nl802353x
Determining the internal quantum efficiency of PbSe nanocrystal solar cells with the aid of an optical model.
M. Law (2008)
10.1038/NPHOTON.2011.123
Tandem colloidal quantum dot solar cells employing a graded recombination layer
X. Wang (2011)
10.1002/ADFM.200901585
Impact of Ground‐State Charge Transfer and Polarization Energy Change on Energy Band Offsets at Donor/Acceptor Interface in Organic Photovoltaics
Kouki Akaike (2010)
10.1063/1.2920166
Solution-processed polymer-free photovoltaic devices consisting of PbSe colloidal quantum dots and tetrabenzoporphyrins
E. Kikuchi (2008)
10.1016/J.PROGSOLIDSTCHEM.2005.11.048
Artificial atom solids based on metal nanocrystals : Formation and electrical properties
A. Quinn (2005)
10.1021/nl0803702
Solution-processed ultraviolet photodetectors based on colloidal ZnO nanoparticles.
Y. Jin (2008)



This paper is referenced by
Semantic Scholar Logo Some data provided by SemanticScholar