Bifacial dye-sensitized solar cells from covalent-bonded polyaniline–multiwalled carbon nanotube complex counter electrodes

Efficient bifacial dye-sensitized solar cells through disorder by design

“…, the sensitized mesostructured nanocrystalline TiO 2 film. Our proposal is therefore fully compatible with alternative approaches already proposed in the literature 11 – 21 for superior performance of the cell under rear illumination, which paves the way for the demonstration of bifacial cells with record efficiency.…”

“… 10 , 13 – 17 , 19 In particular, the J sc and PCE values attained for rear illumination are above most of those reported for this standard configuration of the cell, in spite of the fact that the active layers herein employed are approximately 50% thinner than the ones for which the largest efficiencies attained are reported. 10 , 12 , 13 , 15 – 17 , 19 , 21 Hence, a direct consequence of optimising the optical design of the bifacial cell is that we can reduce significantly the electrode thickness.…”

Emerging Semitransparent Solar Cells: Materials and Device Design

“…For example, PEDOT:PSS/graphene,[89b] MoS 2 /graphene‐nanosheet, PEDOT/N‐doped graphene, PANI/rGO, and CoS/rGO composite films have been explored as transparent CEs for DSCs and the devices showed better performance than those without graphene. Besides, transparent PANI/CNT composite CE with acceptable performance was also reported …”

Cobalt/molybdenum ternary hybrid with hierarchical architecture used as high efficient counter electrode for dye-sensitized solar cells

“…From the Tafel polarization curves, it can obtain information on the exchange current density (J 0 ) and the limiting diffusion current density (J lim ). In the Tafel curve, J 0 is the intersection of the tangents to the cathodic branch at zero potential ordinate and it is associated with R CT by the equation Zhang et al, 2015): J 0 = RT/nFR CT . In the equation, R is gas constant, T is absolute temperature, n is the number of electrons involved in the reduction of I 3 À , and F is Faraday's constant.…”

“…6, it is apparent that the J 0 follows an order: electrode-C > electrode-B > electrode-A > electrode-D > electrode-E > Pt electrode, indicating that the R CT values are in the order: electrode-C < electrode-B < electrode-A < electrode-D < electrode-E < Pt electrode, which is in accordance with R CT order obtained from EIS. In addition, the J lim is determined by the diffusion coefficient (D n ) of the redox couple in the electrolyte and it can be expressed by the equation Zhang et al, 2015): J lim = 2nFCD n /l, where n is the number of electrons involved in the reduction of I 3 À , F is Faraday's constant, C is the concentration of I 3 À and l is the distance between the electrodes in a dummy cell. In the Tafel curve, J lim is the intersection of the cathodic branch with the Y-axis.…”