An insight into the surface engineering of colloidal PbSe quantum dots for polymer hybrid photovoltaic applications

The Synergy of Lead Chalcogenide Nanocrystals in Polymeric Bulk Heterojunction Solar Cells

“…In a different study, ligand-exchanged reactions with CdCl 2 -tetradecylphophonic acid (TDPA) had a noticeable impact through a power conversion efficiency of 14.5%, a result of well-aligned energy levels between the polymer and NCs facilitating improved charge carrier transport. Oleic acid in conjunction with oleylamine for PbSe:P3HT devices noticeably resulted in a higher J sc of 5.6 mA and V oc of 0.85 V relative to oleic acid-containing devices only ( J sc of 4.1 mA and V oc of 0.54 V) . Such an improvement was attributed to a result of improved charge transfer and an increased number of particles interacting with the polymer.…”

“…Fabricated cells with halide passivated NCs showed a PCE of 3.31%, which was nearly 14.5% higher than that of a similar device prepared with unpassivated PbSe NCs. Mehta et al 56 prepared oleic acid and oleylamine-capped PbSe NCs and determined the band gaps to be 1.15 and 1.05 eV, respectively. It was observed that the oleylamine had a profound impact on the nucleation and growth of the PbSe QDs, and ultimately a greater control over the size distribution.…”

“…Fabricated cells with halide passivated NCs showed a PCE of 3.31%, which was nearly 14.5% higher than that of a similar device prepared with unpassivated PbSe NCs. Mehta et al . prepared oleic acid and oleylamine-capped PbSe NCs and determined the band gaps to be 1.15 and 1.05 eV, respectively.…”

“…Mehta et al. 56 prepared oleic acid and oleylamine-capped PbSe NCs and determined the band gaps to be 1.15 and 1.05 eV, respectively. It was observed that the oleylamine had a profound impact on the nucleation and growth of the PbSe QDs, and ultimately a greater control over the size distribution.…”

“…Oleic acid in conjunction with oleylamine for PbSe:P3HT devices noticeably resulted in a higher J sc of 5.6 mA and V oc of 0.85 V relative to oleic acid-containing devices only ( J sc of 4.1 mA and V oc of 0.54 V). 56 Such an improvement was attributed to a result of improved charge transfer and an increased number of particles interacting with the polymer.…”