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 language||American English|
|Title of host publication||Organic Photovoltaics - Materials to Devices|
|Number of pages||6|
|State||Published - 2012|
|Event||2011 MRS Fall Meeting - Boston, MA, United States|
Duration: 28 Nov 2011 → 2 Dec 2011
|Name||Materials Research Society Symposium Proceedings|
|Conference||2011 MRS Fall Meeting|
|Period||28/11/11 → 2/12/11|
Bibliographical noteFunding 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”.