Synthesis of benzimidazole moiety heteroleptic ruthenium complex and use as sensitizer in dye-sensitized solar cells

Optically Transparent Gold Nanoparticles for DSSC Counter-Electrode: An Electrochemical Characterization

“…Comparing PCE results with the state-of-art in the literature (Table 1), obtained under similar conditions in terms of dye and electrolyte, is important to benchmark the efficiency of the working system of our transparent gold nanoparticles CE obtained by chemical reduction with the reference platinum CE. The main deviation of the literature data compared to the present investigation involves the current density, spanning from 10.34 to 12.41 mA/cm 2 in [39] and averaging 9.8 mA/cm 2 in our devices. This is understandable if we consider that, when aiming to realize a transparent cathode, the deposited gold nanoparticles do not form a continuous Au film (Figure 2a), such as the one we obtained by thermal evaporation method, which, conversely, had really low transmittance (Figure 4).…”

“…In Figure 9, current densityvoltage (J-V) curves of the optimized DSSC with gold-nanoparticle CEs are reported. In a recent work [39], in a Z907-based DSSC cell assembled with a reference platinum cathode and a reference commercial I − /I 3− based electrolyte, similar values of PCE (4.64 and 4.35%) compared to our study (≈4.55%) were obtained (Table 1). Comparing PCE results with the state-of-art in the literature (Table 1), obtained under similar conditions in terms of dye and electrolyte, is important to benchmark the efficiency of the working system of our transparent gold nanoparticles CE obtained by chemical reduction with the reference platinum CE.…”

“…The open-circuit voltages and the FF present higher values in our devices. This is a consequence of the fabrication process: in this work, a blocking layer was deposited to suppress the back electron transfer processes (i.e., increase the shunt resistance Rsh of Equation ( 1)), while, in [39], this step has not been performed. However, the highest reported PCE in the literature for Z907 dye is in [40], with a value of 6.8%.…”