Origin of the effects of PEG additives in electrolytes on the performance of quantum dot sensitized solar cells.

ABSTRACT: It has been well established that polymer additives in electrolyte can impede the charge recombination processes at the photoanode/electrolyte interface, and improve performance, especially V _oc, of the resulting sensitized solar cells. However, there are few reports about the effect of electrolyte additives on counter electrode (CE) performance. Herein, we systematically investigated the effect of polyethylene glycol (PEG) additives with various molecular weights (M _w from 300 to 20 000) in polysulfide electrolyte on the performance of two representative CdSe and Zn-Cu-In-Se (ZCISe) quantum dot sensitized solar cells (QDSCs), and explored the mechanism of the observed effects. Electrochemical impedance spectroscopy measurements indicate that all PEG add

SUBMITTER: Sun Y 

PROVIDER: S-EPMC9085256 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature