Colloidal-quantum-dot photovoltaics using atomic-ligand passivation

Handle URI:
http://hdl.handle.net/10754/561876
Title:
Colloidal-quantum-dot photovoltaics using atomic-ligand passivation
Authors:
Tang, Jiang; Kemp, Kyle W.; Hoogland, Sjoerd H.; Jeong, Kwangseob; Liu, Huan; Levina, Larissa; Furukawa, Melissa; Wang, Xihua; Debnath, Ratan K.; Cha, Dong Kyu; Chou, Kang Wei; Fischer, Armin H.; Amassian, Aram ( 0000-0002-5734-1194 ) ; Asbury, John B.; Sargent, E. H.
Abstract:
Colloidal-quantum-dot (CQD) optoelectronics offer a compelling combination of solution processing and spectral tunability through quantum size effects. So far, CQD solar cells have relied on the use of organic ligands to passivate the surface of the semiconductor nanoparticles. Although inorganic metal chalcogenide ligands have led to record electronic transport parameters in CQD films, no photovoltaic device has been reported based on such compounds. Here we establish an atomic ligand strategy that makes use of monovalent halide anions to enhance electronic transport and successfully passivate surface defects in PbS CQD films. Both time-resolved infrared spectroscopy and transient device characterization indicate that the scheme leads to a shallower trap state distribution than the best organic ligands. Solar cells fabricated following this strategy show up to 6% solar AM1.5G power-conversion efficiency. The CQD films are deposited at room temperature and under ambient atmosphere, rendering the process amenable to low-cost, roll-by-roll fabrication. © 2011 Macmillan Publishers Limited. All rights reserved.
KAUST Department:
Advanced Nanofabrication, Imaging and Characterization Core Lab; Materials Science and Engineering Program; Physical Sciences and Engineering (PSE) Division; Solar and Photovoltaic Engineering Research Center (SPERC); Core Labs; Organic Electronics and Photovoltaics Group
Publisher:
Nature Publishing Group
Journal:
Nature Materials
Issue Date:
18-Sep-2011
DOI:
10.1038/nmat3118
Type:
Article
ISSN:
14761122
Sponsors:
This publication is based in part on work supported by Award No. KUS-11-009-21, made by King Abdullah University of Science and Technology (KAUST). We thank Angstrom Engineering and Innovative Technologies for useful discussions concerning material deposition methods and control of the glovebox environment, respectively. The authors thank H. Zhong, R. Li, L. Brzozowski, V. Sukhovatkin, A. Barkhouse, I. Kramer, G. Koleilat, E. Palmiano and R. Wolowiec for their help during the course of study. R.D. acknowledges the financial support of e8 scholarship. K.S.J. and J.B.A. gratefully acknowledge partial support from the Petroleum Research Fund (PRF #49639-ND6), the National Science Foundation (CHE 0846241), and the Office of Naval Research (N00014-11-1-0239).
Appears in Collections:
Articles; Advanced Nanofabrication, Imaging and Characterization Core Lab; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program; Solar and Photovoltaic Engineering Research Center (SPERC)

Full metadata record

DC FieldValue Language
dc.contributor.authorTang, Jiangen
dc.contributor.authorKemp, Kyle W.en
dc.contributor.authorHoogland, Sjoerd H.en
dc.contributor.authorJeong, Kwangseoben
dc.contributor.authorLiu, Huanen
dc.contributor.authorLevina, Larissaen
dc.contributor.authorFurukawa, Melissaen
dc.contributor.authorWang, Xihuaen
dc.contributor.authorDebnath, Ratan K.en
dc.contributor.authorCha, Dong Kyuen
dc.contributor.authorChou, Kang Weien
dc.contributor.authorFischer, Armin H.en
dc.contributor.authorAmassian, Aramen
dc.contributor.authorAsbury, John B.en
dc.contributor.authorSargent, E. H.en
dc.date.accessioned2015-08-03T09:33:04Zen
dc.date.available2015-08-03T09:33:04Zen
dc.date.issued2011-09-18en
dc.identifier.issn14761122en
dc.identifier.doi10.1038/nmat3118en
dc.identifier.urihttp://hdl.handle.net/10754/561876en
dc.description.abstractColloidal-quantum-dot (CQD) optoelectronics offer a compelling combination of solution processing and spectral tunability through quantum size effects. So far, CQD solar cells have relied on the use of organic ligands to passivate the surface of the semiconductor nanoparticles. Although inorganic metal chalcogenide ligands have led to record electronic transport parameters in CQD films, no photovoltaic device has been reported based on such compounds. Here we establish an atomic ligand strategy that makes use of monovalent halide anions to enhance electronic transport and successfully passivate surface defects in PbS CQD films. Both time-resolved infrared spectroscopy and transient device characterization indicate that the scheme leads to a shallower trap state distribution than the best organic ligands. Solar cells fabricated following this strategy show up to 6% solar AM1.5G power-conversion efficiency. The CQD films are deposited at room temperature and under ambient atmosphere, rendering the process amenable to low-cost, roll-by-roll fabrication. © 2011 Macmillan Publishers Limited. All rights reserved.en
dc.description.sponsorshipThis publication is based in part on work supported by Award No. KUS-11-009-21, made by King Abdullah University of Science and Technology (KAUST). We thank Angstrom Engineering and Innovative Technologies for useful discussions concerning material deposition methods and control of the glovebox environment, respectively. The authors thank H. Zhong, R. Li, L. Brzozowski, V. Sukhovatkin, A. Barkhouse, I. Kramer, G. Koleilat, E. Palmiano and R. Wolowiec for their help during the course of study. R.D. acknowledges the financial support of e8 scholarship. K.S.J. and J.B.A. gratefully acknowledge partial support from the Petroleum Research Fund (PRF #49639-ND6), the National Science Foundation (CHE 0846241), and the Office of Naval Research (N00014-11-1-0239).en
dc.publisherNature Publishing Groupen
dc.titleColloidal-quantum-dot photovoltaics using atomic-ligand passivationen
dc.typeArticleen
dc.contributor.departmentAdvanced Nanofabrication, Imaging and Characterization Core Laben
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentSolar and Photovoltaic Engineering Research Center (SPERC)en
dc.contributor.departmentCore Labsen
dc.contributor.departmentOrganic Electronics and Photovoltaics Groupen
dc.identifier.journalNature Materialsen
dc.contributor.institutionUniv Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canadaen
dc.contributor.institutionPenn State Univ, Dept Chem, University Pk, PA 16802 USAen
dc.contributor.institutionHuazhong Univ Sci & Technol, Dept Elect Sci & Technol, Wuhan 430074, Peoples R Chinaen
kaust.authorCha, Dong Kyuen
kaust.authorChou, Kang Weien
kaust.authorAmassian, Aramen
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.