Flexible quantum dot-sensitized solar cells employing CoS nanorod arrays/graphite paper as effective counter electrodes

Earth-abundant Cu2SnSe3 thin film counter electrode for high-efficiency quantum dot-sensitized solar cells

“…5c shows the typical CV curves of polysulfide redox couple using CTSe and Pt as the working electrode. We note that, in QDSCs, similar CV behavior of CEs in polysulfide redox system was observed in other reports with no obvious cathodic/anodic peaks recorded in the CV curves [41,42,66]. During regeneration in the electrolyte, the oxidized species, S 2À n , had to be reduced to S 2À on the CE (S 2À n þ 2e À 4 S 2À nÀ1 þ S 2À ).…”

Electrodeposited cobalt-copper sulfide counter electrodes for highly efficient quantum dot sensitized solar cells

“…The best performance is attained for the CoS-CuS 2C-1t loaded electrodes, which show the minimum RCT,S, equal to 3.04 Ohm cm 2 . Such low RCT,S resistance is one of the best in the literature [8,25,28,47,48] and can be applied in equation (1), in order to estimate the exchange current density [33].…”

“…Fig. 6), showing the best electrocatalytic performance as they promote faster reduction of the polysulfide species [47,48]. Symmetrical dummy cells of the structure CuS/electrolyte/CuS were also constructed.…”

Newborn 2D materials for flexible energy conversion and storage

“…Upon the illumination of light, the electron-hole pairs or free carriers of the active layers could be generated by the incident photons and photocurrent at the p-n junctions is generated. The extraordinary optoelectronic properties of NB2DMs such as efficient light absorption and direct band gap make them the permit building blocks of solar cells [62][63][64][65][66][67][68][69][70].…”