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

Abstract

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)
Pages951-954
Number of pages4
ISBN (Print)9781424458905
DOIs
StatePublished - Jun 2010
Externally publishedYes

Fingerprint Dive into the research topics of 'Phosphonate self-assembled monolayers as organic linkers in solid-state quantum dot sensetized solar cells'. Together they form a unique fingerprint.

Cite this