Enhancement of the photovoltaic performance in PbS nanocrystal:P3HT hybrid composite devices by post-treatment-driven ligand exchange.
A methodology for achieving versatile and facile ligand exchange by post-fabrication chemical treatment in PbS nanocrystal:poly(3-hexylthiophene) (P3HT) hybrid composite photovoltaic devices is demonstrated. We report a considerable improvement of the photovoltaic performance after post-fabrication chemical treatment using acetic acid to produce PbS nanocrystals surrounded by short-length ligands. Annealing induced morphological and photovoltaic performance changes in the resulting composite devices were investigated as a function of the annealing time.
Institute for Lasers, Photonics and Biophotonics, University at Buffalo, State University of New York, Buffalo, NY 14260, USA.
Jangwon
J
Seo
Sung Jin
SJ
Kim
Won Jin
WJ
Kim
Rohit
R
Singh
Marek
M
Samoc
Alexander N
AN
Cartwright
Paras N
PN
Prasad
D003460:Crystallization / Q000379:methods; D011211:Electric Power Supplies; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007854:Lead / Q000737:chemistry* / Q000528:radiation effects; D008024:Ligands; D008027:Light; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000295:instrumentation*; D016566:Organoselenium Compounds / Q000737:chemistry* / Q000528:radiation effects; D010316:Particle Size; D010777:Photochemistry / Q000295:instrumentation*; D013440:Sulfides / Q000737:chemistry* / Q000528:radiation effects
D008024:Ligands; D016566:Organoselenium Compounds; D013440:Sulfides; C526212:poly(3-hexyl)selenophene; C018391:lead sulfide; D007854:Lead