Photon management strategies in SSM-DSCs: Realization of a &gt;11% PCE device with a 2.3 V output

Cheema, Hammad; Watson, Jonathon; Delcamp, Jared H.

doi:10.1016/j.solener.2020.08.010

Cited by 11 publications

(32 citation statements)

References 28 publications

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“…AP25-based DSC devices have an IPCE onset of 900 nm with a peak value of near 90% and the D35-co-sensitized devices showed a PCE of 8.4%. The broad IPCE of the AP25-based DSC device is attractive for use as a narrow optical gap material in tandem and sequential series multijunction (SSM) systems, 324–326 yielding DSC devices with PCEs exceeding 10% for both the two and three photoanode devices with an up to 2.1 V open circuit voltage. Replacing the CAA group of C218 with a BTD and a benzoic acid linked with an alkyne group gives C268, which has an IPCE onset red-shifted by 50 nm relative to C218.…”

Section: Methodsmentioning

confidence: 99%

Dye-sensitized solar cells strike back

et al. 2021

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Section: Methodsmentioning

confidence: 99%

Dye-sensitized solar cells strike back

et al. 2021

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“…DSC devices were fabricated and characterized as previously reported with identical equipment to that previously reported . The active-layer TiO 2 (nanoparticle size 28–31 nm, Dyenamo, DN-GPS-30TS) film thickness was 5 μm.…”

Section: Methodsmentioning

confidence: 99%

“…The [Co(bpy) 3 ] 3+/2+ electrolyte was composed of a saturated solution of near 0.25 M Co 2+ , 0.05 M Co 3+ , 0.1 M LiTFSI (TFSI = bis(trifluoromethanesulfonyl)imide), and 0.5 M TBP (TBP = 4- tert -butylpyridine) in acetonitrile. The PFTS treatment was applied as previously described …”

Section: Methodsmentioning

confidence: 99%

“…DSC devices were fabricated and characterized as previously reported with identical equipment to that previously reported. 67 The active-layer TiO 2 (nanoparticle size 28−31 nm, Dyenamo, DN-GPS-30TS) film thickness was 5 μm. Sensitized TiO 2 films were prepared by immersion in a room-temperature dye solution for 4 h. Dye uptake was found to be near complete at 3 h with modest changes after 3 h (Figure S4).…”

Section: ■ Introductionmentioning

confidence: 99%

“…The PFTS treatment was applied as previously described. 67 MgO Film Formation. A 6 mL solution of the desired concentration of Mg(OMe) 2 was prepared in methanol.…”

Section: ■ Introductionmentioning

confidence: 99%

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Preferential Direction of Electron Transfers at a Dye–Metal Oxide Interface with an Insulating Fluorinated Self-Assembled Monolayer and MgO

et al. 2021

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Slowing nondesirable electron transfer reactions at metal oxide–dye interfaces is important for many technologies. In particular, after an interfacial photoinduced charge separation event at a metal oxide–dye interface, it is critically important to limit the rate of electron transfer reactions back to sensitizers and to limit electron transfer reactions between the electrolyte and the metal oxide. Ruthenium-based dyes at metal oxide interfaces are widely used in many fields; however, these dyes often have poor surface insulation resulting in fast recombination kinetics with transition metal-based redox shuttles (RSs) in an electrolyte. This work explores two semiconductor surface modification strategies designed to minimize recombination events of electrons in TiO2 with oxidized RSs using a fluorinated siloxane insulator (PFTS) and a metal oxide insulator (MgO) with a well-known Ru dye, B11. Additionally, the influence of these treatments on the rate and duration of photoinduced interfacial charge separation at the TiO2–dye interface was examined. The TiO2-dye-RS systems were studied via dye-sensitized solar cell current–voltage curve, incident photon-to-current conversion efficiency, small modulated photovoltage transient, time-correlated single-photon counting, and transient absorption spectroscopy measurements. MgO was found to decrease the rate of the electron transfer reaction from the metal oxide to the electrolyte, decrease the rate of the electron transfer reaction to the oxidized dye from TiO2, increase the electron transfer reaction rate from a reduced RS to an oxidized dye, and decrease the electron injection rate from the photoexcited dye to TiO2. Interestingly, 1H,1H,2H,2H-perfluorooctyltrimethoxysilane (PFTS) was found to desirably improve these rates relative to MgO or untreated TiO2. A model based on electrostatic interactions is presented to explain the exceptional behavior of PFTS with density functional theory computational analysis of PFTS supporting this model.

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Hoisting photovoltaic performance of perovskite BaSnO3 nanoparticles wrapped reduced graphene oxide: Efficient photoelectrode for dye-sensitized solar cell

Pandian

Sivakumar

2023

Materials Today: Proceedings

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Photon management strategies in SSM-DSCs: Realization of a >11% PCE device with a 2.3 V output

Cited by 11 publications

References 28 publications

Dye-sensitized solar cells strike back

Dye-sensitized solar cells strike back

Preferential Direction of Electron Transfers at a Dye–Metal Oxide Interface with an Insulating Fluorinated Self-Assembled Monolayer and MgO

Hoisting photovoltaic performance of perovskite BaSnO3 nanoparticles wrapped reduced graphene oxide: Efficient photoelectrode for dye-sensitized solar cell

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