Lead sulfide (PbS) quantum dots (QDs) have been applied in the biomedical area because they offer an excellent platform for theragnostic applications. In order to comprehensively evaluate the biocompatibility of PbS QDs in human cells, we analyzed the exosomes secreted from cells because exosomes are released during cellular stress to convey signals to other cells and serve as a reservoir of en...

The Bi1.6Pb0.4Sr2CaCu2O8 (Bi-2212) phase is an interesting superconductor. Although it’s transition temperature lower than Bi1.6Pb0.4Sr2Ca2Cu3O10 (Bi-2223), it has a better high field performance at low temperatures. This report regarding the effects of lead sulfide on Samples Bi1.6Pb0.4Sr2CaCu2O8(PbS)x for x = 0.0 to 10.0 wt.% were prepared via solid-state-reaction route. Bi-2212 was majority ...

We report chemical-vapor-deposition (CVD) synthesis of high-density lead sulfide (PbS) nanowire arrays and nano pine trees directly on Ti thin films, and the fabrication of photovoltaic devices based upon the PbS nanowires. The as-grown nanowire arrays are largely vertically aligned to the substrates and are uniformly distributed over a relatively large area. Field effect transistors incorporat...

Lead sulfide (PbS) presents large potential in thermoelectric application due to its earth-abundant S element. However, inferior average ZT (ZTave) value makes PbS less competitive with analogs PbTe and PbSe. To promote performance, this study implements strategies of continuous Se alloying Cu interstitial doping synergistically tune thermal electrical transport properties n-type PbS. First, th...

Incorporation of organic molecules into the crystal lattice biominerals is one Nature's main strategies to modify structure, morphology, and specific physical properties mineral host. Inspired by this biostrategy, it shown that several semiconductors, whose band gaps are in ultraviolet or visible absorption spectrum, can incorporate individual amino acids (AAs) their crystalline structures. Int...

Nowadays, the best lead sulfide (PbS) colloidal quantum dot (CQD) solar cells are primarily demonstrated in n-p structure, while p-n structure is significantly less developed. This technological gap between and structures much more distinct than cases of other solution-processable photovoltaic technologies like perovskites polymers. Here, we propose a scalable fabrication strategy for efficient...

Biomineralization utilizes biological systems to synthesize functional inorganic materials for application in diverse fields. In the current work, we enable biomineralization of quantum confined PbS and PbS–CdS core–shell nanocrystals and demonstrate their application in quantum dot sensitized solar cells (QDSSCs). An engineered strain of Stenotrophomonas maltophilia is utilized to generate a c...

Hybrid colloidal quantum dot (CQD) solar cells are fabricated from multilayer stacks of lead sulfide (PbS) CQD and single layer graphene (SG). The inclusion of graphene interlayers is shown to increase power conversion efficiency by 9.18%. It is shown that the inclusion of conductive graphene enhances charge extraction in devices. Photoluminescence shows that graphene quenches emission from the...