High performance solid-state PbS/CuS hetero-nanostructured quantum dots-sensitized solar cells

Cation-Exchange Synthesis of Lead Bismuth Sulfide Quantum Dots and Nanorods for Thermoelectric Applications

“…PbS QDs were synthesized using bis­(trimethylsilyl)­sulfide ((TMS) 2 S) and Pb-oleate according to a previously reported method . Then, bismuth-oleate was added to PbS QD solution, and the solution was maintained at 160 °C (in the case of QDs) or 180 °C (in the case of NRs) for 60 min.…”

“…PbS QDs were synthesized using bis(trimethylsilyl)sulfide ((TMS) 2 S) and Pb-oleate according to a previously reported method. 12 Then, bismuth-oleate was added to PbS QD solution, and the solution was maintained at 160 °C (in the case of QDs) or 180 °C (in the case of NRs) for 60 min. The PbS and bismuth alloys show crystalline structures of spherical PbS, Pb 1−x Bi x S y (x = 0.1−0.3) QDs, and Pb 1−x Bi x S y NRs as evident from the XRD and the TEM images, respectively (Figure 1).…”

“…They found that the stability and luminescence intensity of the PbS QDs could be improved by coating them with a CdS shell. Our group synthesized heteronanostructured PbS/CuS QDs that can generate free charge carriers by light absorption and obtained an external quantum efficiency (EQE) of approximately 9.3% . Similarly, many studies have been conducted to improve the performance while maintaining the benefits of PbS QDs. , …”

“…Our group synthesized heteronanostructured PbS/CuS QDs that can generate free charge carriers by light absorption and obtained an external quantum efficiency (EQE) of approximately 9.3%. 12 Similarly, many studies have been conducted to improve the performance while maintaining the benefits of PbS QDs. 13,14 Bismuth sulfide (Bi 2 S 3 ) is a promising n-type semiconductor and thermoelectric material that can provide enhanced performance and substitute toxic PbS.…”

Enhancement in power conversion efficiency of CdS quantum dot sensitized solar cells through a decrease in light reflection

“…In the past years several studies have been performed on different components in order to improve the performance of the QDSCs. This research includes applying a different structure of TiO2 as the scaffold [11][12][13], different semiconductor QDs [14,15], electrolyte [16] and the counter electrode [17,18]. Moreover, in a solar cell the percentage of sunlight emitted is reflected which reduces the density of the generated current from photon radiation.…”