Photovoltaic Performance of PbS Quantum Dots Treated with Metal Salts

Authors

Dong Kyun Ko, Newark College of Engineering
Andrea Maurano, MIT Department of Electrical Engineering and Computer Science
Su Kyung Suh, Massachusetts Institute of Technology
Donghun Kim, MIT School of Engineering
Gyu Weon Hwang, MIT School of Engineering
Jeffrey C. Grossman, MIT School of Engineering
Vladimir Bulović, MIT Department of Electrical Engineering and Computer Science
Moungi G. Bawendi, Massachusetts Institute of Technology

Document Type

Article

Publication Date

3-22-2016

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.

Identifier

84961875100 (Scopus)

Publication Title

ACS Nano

External Full Text Location

https://doi.org/10.1021/acsnano.5b07186

e-ISSN

1936086X

ISSN

19360851

First Page

3382

Last Page

3388

Issue

3

Volume

10

Recommended Citation

Ko, Dong Kyun; Maurano, Andrea; Suh, Su Kyung; Kim, Donghun; Hwang, Gyu Weon; Grossman, Jeffrey C.; Bulović, Vladimir; and Bawendi, Moungi G., "Photovoltaic Performance of PbS Quantum Dots Treated with Metal Salts" (2016). Faculty Publications. 10618.
https://digitalcommons.njit.edu/fac_pubs/10618