More importantly, the method developed in this work can also be applied to other fission materials for optimizing the design of fission sensitized photovoltaic devices.
In singlet fission sensitized photovoltaic devices, the photoexcited singlet excitons might undergo three different decay pathways including fission, radiation, and dissociation.
In these contexts, respondents seemed to be using the statements and their explanations in exactly the way we had intended them - as sensitizing tools, heuristic devices, to support thinking through an implementation task.
Consequently, the co-sensitized DSSC (PTZ 2 + N719) gave the highest efficiency of 8.12%, exhibiting an improvement of 16.50% compared to the device sensitized with N719 alone (PCE = 6.97%) under the same conditions.
Devices co-sensitized using DBA-1 and DBA-2 along with HD-2 (Ru-complex of 4, 4'-bis- 1,4-benzodioxan-5-yl-vinyl -[2,2']bipyridine), displayed higher power conversion efficiencies (PCEs) than the device sensitized using only HD-2.
The cosensitized solar cell exhibits a 37% enhancement in energy conversion efficiency compared with the device sensitized by CdS QDs only, which is attributed to the higher light absorbance of the cosensitized solar cells than that of CdS sensitized solar cells.
The UV Visible absorption spectra indicates obvious red-shift of PBDTT−BP−Cd compared with the others, and the device sensitized by PBDTT−BP−Cd exhibited the highest power conversion efficiency (PCE) of 6.13% under the full sunlight (AM 1.5 G, 100 mW cm−2) irradiation.
EIS measurements indicated that the device sensitized by the compound having cyanoacrylic acid as anchoring group in presence of coadsorbent exhibited the largest resistance for recombination between the electrons injected to TiO2 and electrolyte leading to a better lifetime and photovoltage.
In conjunction with TiO2 microspheres photoanode and a typical coadsorbent DPA, the devices sensitized by RC-36 achieve the best conversion efficiency of 10.23%.
A major drawback underlying the relatively low light harvesting ability and the concomitant reduced photocurrents in quantum dot sensitized solar cell devices is the amount of QDs adsorbed on the TiO2 electrode.
