Solid state PbS quantum dots /TiO 2 nanoparticles heterojunction solar cell

Lioz Etgar*, Michael Grätzel

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations


Solid state PbS Quantum Dots (QDs)/TiO 2 Nanoparticles heterojunction solar cells were produced by depositing PbS QDs on a 500nm thick Mesoscopic TiO 2 films using layer-by-layer deposition. The heterojunction solar cells show photovoltaic response from the visible to the near infra-red region. Importantly, the PbS QDs act here as photosensitizers and at the same time as hole conductors. The PbS QDs/TiO 2 device produces a remarkable short circuit photocurrent (J sc) of 16.3 mA/cm 2, an open circuit photovoltage (V oc) of 0.54 V and a fill factor (FF) of 0.41, corresponding to a light to electric power conversion efficiency (η) of 4.04% under 0.9 sun intensity.

Original languageAmerican English
Title of host publicationOrganic Photovoltaics - Materials to Devices
Number of pages6
StatePublished - 2012
Externally publishedYes
Event2011 MRS Fall Meeting - Boston, MA, United States
Duration: 28 Nov 20112 Dec 2011

Publication series

NameMaterials Research Society Symposium Proceedings
ISSN (Print)0272-9172


Conference2011 MRS Fall Meeting
Country/TerritoryUnited States
CityBoston, MA

Bibliographical note

Funding Information:
Authors acknowledge financial support of this work by the EU project “Innovasol” grant agreement number 227057-2. L.E. acknowledges the Marie Curie Actions—Intra-European Fellowships (FP7-PEOPLE-2009-IEF) under grant agreement n° 252228, project “Excitonic Solar Cell”.


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