Highly Monodispersed PbS Quantum Dots for Outstanding Cascaded-Junction Solar Cells.

ABSTRACT: High-performance cascaded-junction quantum dot solar cells (CJQDSCs) are fabricated from as-prepared highly monodispersed lead sulfide QDs. The cells have a high power conversion of 9.05% and a short-circuit current density of 32.51 mA?cm^-2. A reliable and effective stratagem for fabricating high-quality lead sulfide quantum dots (QD) is explored through a "monomer" concentration-controlled experiment. Robust QDSC performances with different band gaps are demonstrated from the as-proposed synthesis and processing stratagems. Various potential CJQDSCs can be envisioned from the band edge evolution of the QDs as a function of size and ligands reported here.

SUBMITTER: Hou B 

PROVIDER: S-EPMC5180466 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature