TY - JOUR
T1 - Repairing Nanoparticle Surface Defects
AU - Marino, Emanuele
AU - Kodger, Thomas E.
AU - Crisp, Ryan W.
AU - Timmerman, Dolf
AU - MacArthur, Katherine E.
AU - Heggen, Marc
AU - Schall, Peter
PY - 2017
Y1 - 2017
N2 - Solar devices based on semiconductor nanoparticles require the use of conductive ligands; however, replacing the native, insulating ligands with conductive metal chalcogenide complexes introduces structural defects within the crystalline nanostructure that act as traps for charge carriers. We utilized atomically thin semiconductor nanoplatelets as a convenient platform for studying, both microscopically and spectroscopically, the development of defects during ligand exchange with the conductive ligands Na4SnS4 and (NH4)4Sn2S6. These defects can be repaired via mild chemical or thermal routes, through the addition of L-type ligands or wet annealing, respectively. This results in a higher-quality, conductive, colloidally stable nanomaterial that may be used as the active film in optoelectronic devices.
AB - Solar devices based on semiconductor nanoparticles require the use of conductive ligands; however, replacing the native, insulating ligands with conductive metal chalcogenide complexes introduces structural defects within the crystalline nanostructure that act as traps for charge carriers. We utilized atomically thin semiconductor nanoplatelets as a convenient platform for studying, both microscopically and spectroscopically, the development of defects during ligand exchange with the conductive ligands Na4SnS4 and (NH4)4Sn2S6. These defects can be repaired via mild chemical or thermal routes, through the addition of L-type ligands or wet annealing, respectively. This results in a higher-quality, conductive, colloidally stable nanomaterial that may be used as the active film in optoelectronic devices.
KW - ligand exchange
KW - nanoplatelets
KW - nanostructures
KW - quantum dots
KW - thiostannates
UR - http://resolver.tudelft.nl/uuid: f8e3c5d1-ebc9-49cb-b9e0-7a17a671748b
UR - http://www.scopus.com/inward/record.url?scp=85031746723&partnerID=8YFLogxK
U2 - 10.1002/anie.201705685
DO - 10.1002/anie.201705685
M3 - Article
AN - SCOPUS:85031746723
SN - 1433-7851
VL - 56
SP - 13795
EP - 13799
JO - Angewandte Chemie (International Edition)
JF - Angewandte Chemie (International Edition)
IS - 44
ER -