Photovoltaic Performance of PbS Quantum Dots Treated with Metal Salts

Title
Photovoltaic Performance of PbS Quantum Dots Treated with Metal Salts
Authors
Dong-Kyun KoAndrea MauranoSu Kyung Suh김동훈황규원Jeffrey C. GrossmanVladmir BulovicMoungi G. Bawendi
Keywords
quantum dots; nanocrystals; solar cells; photovoltaics; metal salts
Issue Date
2016-03
Publisher
ACS Nano
Citation
VOL 10, NO 3, 3382-3388
Abstract
Recent advances in quantum dot surface passivation have led to a rapid development of high-efficiency solar cells. Another critical element for achieving efficient power conversion is the charge neutrality of quantum dots, as charge imbalances induce electronic states inside the energy gap. Here we investigate how the simultaneous introduction of metal cations and halide anions modifies the charge balance and enhances the solar cell efficiency. The addition of metal salts between QD deposition and ligand exchange with 1,3-BDT results in an increase in the short-circuit current and fill factor, accompanied by a distinct reduction in a crossover between light and dark current density–voltage characteristics.
URI
http://pubs.kist.re.kr/handle/201004/58718
ISSN
19360851
Appears in Collections:
KIST Publication > Article
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