Phosphonate self-assembled monolayers as organic linkers in solid-state quantum dot sensetized solar cells

Pendar Ardalan, Thomas P. Brennan, Jonathan R. Bakke, Stacey F. Bent

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


We have employed X-ray photoelectron spectroscopy (XPS), ultraviolet-visible (UV-vis) spectroscopy, infrared (IR) spectroscopy, water contact angle (WCA) measurements, ellipsometry, and electrical measurements to study the effects of self-assembled monolayers (SAMs) with phosphonic acid headgroups on the bonding and performance of cadmium sulfide (CdS) solid-state quantum dot sensitized solar cells (QDSSCs). ∼2 to ∼6 nm size CdS quantum dots (QDs) were grown on the SAM-passivated TiO2 surfaces by successive ionic layer adsorption and reaction (SILAR). Our results show differences in the bonding of the CdS QDs at the TiO2 surfaces with a SAM linker. Moreover, our data indicate that presence of a SAM increases the CdS uptake on TiO2 as well as the performance of the resulting devices. Importantly, we observe ∼2 times higher power conversion efficiencies in the devices with a SAM compared to those that lack a SAM. © 2010 IEEE.
Original languageEnglish (US)
Title of host publication2010 35th IEEE Photovoltaic Specialists Conference
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages4
ISBN (Print)9781424458905
StatePublished - Jun 2010
Externally publishedYes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KUS-C1-015-21
Acknowledgements: The authors would like to acknowledge I-KangDing for help with the device fabrication and the solarsimulator measurements. We also thank the StanfordNanocharacterization Laboratory (SNL) staff and the staffof the Center for Polymer Interfaces and MacromolecularAssemblies (CPIMA) for their support. This publicationwas based on work supported by the Center for AdvancedMolecular Photovoltaics (Award No. KUS-C1-015-21),made by King Abdullah University of Science andTechnology (KAUST).
This publication acknowledges KAUST support, but has no KAUST affiliated authors.


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