Enhanced film quality of PbS QD solid by eliminating the oxide traps through an in situ surface etching and passivation

Abstract

PbS QDs received considerable interests in optoelectronics. However, their high susceptibility to oxidation results in the production of Pb oxides on PbS, which can induce sub-bandgap traps in PbS QDs...

A Biphase Tandem Redox Electrolyte for Efficient Quantum Dot‐Sensitized Solar Cell

“…Compared to the pristine Co@N‐C, we found that the immobilization of HMII leads to the appearance of additional new peaks at 619.0 and 630.6 eV, which is assigned to I 3 d signal (Figure 2A). [ 17 ] This result together with the elemental mapping analyses (Figure S1, Supporting Information) confirmed the binding of HMII on Co@N‐C. Figure 2B shows the high‐resolution I 3 d spectrum for the HMII immobilized sample with the peak positions indicating the different species identified by spectrum deconvolution.…”