2020
DOI: 10.1007/s10854-020-03337-3
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New cyanoacetanilides based dyes as effective co-sensitizers for DSSCs sensitized with ruthenium (II) complex (HD-2)

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Cited by 17 publications
(9 citation statements)
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“…The average PCE value of the devices follows the order OSi-ErB > OSi-EoY > OSi-27D > OSi-EoB, which may be because the functional group also has a certain influence on the efficiency of the device, and −NO 2 is the electron-withdrawing group, which is not conducive to electron transport. 30,31 External quantum efficiency (EQE) studies (Figure 2c) revealed that the OSiND-based device's EQE in the 430−800 nm region is somewhat boosted when compared to the ZnO-based control device. Combining the short-circuit current value and EQE in Table 1, the deviation is about 5%.…”
Section: ■ Results and Discussionmentioning
confidence: 99%
“…The average PCE value of the devices follows the order OSi-ErB > OSi-EoY > OSi-27D > OSi-EoB, which may be because the functional group also has a certain influence on the efficiency of the device, and −NO 2 is the electron-withdrawing group, which is not conducive to electron transport. 30,31 External quantum efficiency (EQE) studies (Figure 2c) revealed that the OSiND-based device's EQE in the 430−800 nm region is somewhat boosted when compared to the ZnO-based control device. Combining the short-circuit current value and EQE in Table 1, the deviation is about 5%.…”
Section: ■ Results and Discussionmentioning
confidence: 99%
“…Based on the oxidation onset, the potential HOMO energy level was calculated assuming that the IP of ferrocene equals −5.1 eV [ 55 ], being −5.73 and −5.63 eV for 2a and N719, respectively. HOMO levels are somewhat more negative than the I − /I 3− redox potential (−4.8 eV) [ 32 ], and should enable the dye regeneration. The LUMO energy level determined from the optical energy gap (Eg OPT ), and calculated HOMO to be −3.03 and −3.47 eV for 2a and N719, respectively.…”
Section: Resultsmentioning
confidence: 99%
“…Two groups of DSSC can be specified. The first one is based on two dyes, one of which is a new metal-free dye, and the other is a commercial metal-containing sensitizer, which is often Ru (e.g., N719, N3, HD-2) [ 7 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 ]. It is worth noting that these PV cells exhibit higher efficiencies than devices containing only commercial dye in most cases.…”
Section: Introductionmentioning
confidence: 99%
“…Furthermore, a wellknown substance with a non-planar architecture that exhibits a stiff plane [24], three-dimensional steric, a hole transporting characteristic, light-harvesting features and decreased aggregation on semiconductor surfaces (TiO 2 ) [25]. To improve DSSC photovoltaic efficiency, photosensitizers are required to have bathochromic shifts by introducing donating groups (alkoxy, alkyl) and aromatic groups to TPA that increase the HOMO energy orbital level [26] or introducing different anchoring groups (CN, CO and NH) that facilitate the electron injection from the donor moiety into the photoanode and decrease charge aggregation of the dye on TiO 2 [27][28][29][30][31][32]. To improve the binding strength of dyes on TiO 2 , the incorporation of double electron-accepting groups into the organic donor structure to generate a double-anchored compound has been suggested, which exhibited higher device efficiency than single D-π-A dyes [33][34][35][36][37][38][39].…”
Section: Introductionmentioning
confidence: 99%