Solid state p-type dye-sensitized solar cells: concept, experiment and mechanism

Zhang, Lei; Boschloo, Gerrit; Hammarström, Leif; Tian, Haining

doi:10.1039/c5cp05247e

Cited by 48 publications

(96 citation statements)

References 34 publications

(50 reference statements)

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“…[26] However,t he first p-ssDSC afforded anu nsatisfactory photocurrent of 50 mAcm À2 . [25] To furtheri mprove the performance of p-ssDSCs, we focused on selecting appropriate ETMs ando ptimization of the ETM preparation process. By using TiO 2 prepared by atomic layer deposition (ALD) instead of PCBM as the ETM, we found that the dyec an be regenerat-ed through ultrafasth ole injection into NiO (200 fs) and electron injectioni nto TiO 2 (500 fs).…”

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confidence: 99%

An Indacenodithieno[3,2‐b]thiophene‐Based Organic Dye for Solid‐State p‐Type Dye‐Sensitized Solar Cells

et al. 2019

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An indacenodithieno[3,2-b]thiophene( IDTT) unit is used as a linker moiety to design an ew p-type dye-TIP-for solid-state p-type dye-sensitized solar cells. Solarc ells based on the TIP dye offered an efficiency of 0.18 %w ith an open-circuit photovoltage of 550 mV and as hort-circuit photocurrent density of 0.86 mA cm À2 ,w hich is better than those of two reference dyes, PB6 and BH4. Charge lifetimeexperiments reveal that the IDTT linker-based TIP dye significantly suppresses charge recombination losses in the devices.[a] Dr.Supporting Information and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

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An Indacenodithieno[3,2‐b]thiophene‐Based Organic Dye for Solid‐State p‐Type Dye‐Sensitized Solar Cells

et al. 2019

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“…To avoid having a liquid phase in the p-DSCs, we have recently proposed and proven the concept of solid state p-DSCs, in which a solid state phenyl-C61-butyric acid methyl ester (PCBM) was used as an electron transport material (ETM) between the dye sensitized photocathode and the back contact. 10 Optimization of photosensitizer represents one strategy to improve the performance of this kind of solar cells. 11,12 Inspired by the conventional dye sensitized TiO 2 solar cells, we proposed that TiO 2 should be an alternative ETM to PCBM due to the fast electron injection from dyes into TiO 2 13,14 and good electron transport property.…”

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Solid state p-type dye sensitized NiO–dye–TiO₂ core–shell solar cells

et al. 2018

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Solid state p-type dye sensitized NiO-dye-TiO 2 core-shell solar cells with an organic dye PB6 were successfully fabricated for the first time.With Al 2 O 3 as an inner barrier layer, the recombination process between injected holes in NiO and injected electrons in TiO 2 was significantly suppressed and the charge transport time was also improved.p-Type dye sensitized solar cells (p-DSCs) have attracted intense interest due to their different charge transfer kinetics with respect to more common studied n-DSCs, 1-3 and the potential application in tandem solar cells 4-6 and solar fuel devices. 7-9The conventional p-DSCs are based on liquid redox electrolytes. To avoid having a liquid phase in the p-DSCs, we have recently proposed and proven the concept of solid state p-DSCs, in which a solid state phenyl-C61-butyric acid methyl ester (PCBM) was used as an electron transport material (ETM) between the dye sensitized photocathode and the back contact. 10 Optimization of photosensitizer represents one strategy to improve the performance of this kind of solar cells. 11,12 Inspired by the conventional dye sensitized TiO 2 solar cells, we proposed that TiO 2 should be an alternative ETM to PCBM due to the fast electron injection from dyes into TiO 2 13,14 and good electron transport property. 15 Thus, we recently fabricated a dye sensitized NiOdye-TiO 2 core-shell film and, in contrast to previous work, [16][17][18] the nanoporous NiO film was first sensitized with the dye and a TiO 2 coating was applied afterwards. This dye sensitized coreshell film showed ultrafast hole (t 1/2 o 120 fs) and electron injection into NiO and TiO 2 respectively, resulting in ultrafast dye regeneration upon electron injection, t 1/2 r 500 fs. 19 In the present work, we proved that the dye sensitized NiO-dye-TiO 2 core-shell mesoporous film can be used for fabrication of solid state p-type dye sensitized solar cells. We also show the effect of an Al 2 O 3 inner barrier layer between NiO and TiO 2 on the performance of solar cell. Fig. 1 shows the configuration and working principle of the proposed p-type dye sensitized NiO-dye-TiO 2 core-shell solar cells. The donor-p-acceptor dye PB6 was utilized as photosensitizer since its reduction/oxidation potentials in excited state match with the valence band of NiO and conduction band of TiO 2 . 19The fabrication of the photoelectrode used in this study can be described briefly as follows. A compact NiO layer (60 nm) was sputtered onto a FTO substrate, then a mesoporous NiO layer (1.3 mm) was prepared by doctor-blading NiCl 2 gel on FTO glass and sintered at 450 1C for 0.5 h.20 Subsequently, the NiO electrode was immersed into 0.2 mM PB6 dichloromethane (DCM) solution overnight. The dye loading in the film was determined to be 31.6 nmol cm À2 by desorption experiment (see ESI †). After rinsing with methanol, the dye sensitized NiO film was dried and coated with metal oxides by atomic layer deposition (ALD). For NiO-PB6-TiO 2 photoelectrode, ca. 10 nm TiO 2 layer was coated directly on a dye sensit...

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“…Its application in P1-sensitized p-type DSC achieved overall efficiencies as high as 0.12% and IPCEs of about 50% [76]. Very recently, Zhang et al demonstrated a solid state p-type DSC in which NiO is employed as a p-SC, and the triphenylamine (TPA) based organic dye P1 as a sensitizer, and a solid electron transport material (ETM), phenyl-C61-butyric acid methyl ester (PCBM), is employed to replace liquid redox couple electrolyte [79]. Although the p-SSDSC device gave a low J sc of 50 µA/cm 2 , a promising V oc of 620 mV was demonstrated and that an electron transfer to PCBM and a hole injection into NiO from the excited dye was proved by ultrafast transient absorption spectroscopy.…”

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confidence: 99%

Inorganic p-Type Semiconductors: Their Applications and Progress in Dye-Sensitized Solar Cells and Perovskite Solar Cells

Yum

Moon

et al. 2016

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Considering the increasing global demand for energy and the harmful ecological impact of conventional energy sources, it is obvious that development of clean and renewable energy is a necessity. Since the Sun is our only external energy source, harnessing its energy, which is clean, non-hazardous and infinite, satisfies the main objectives of all alternative energy strategies. With attractive features, i.e., good performance, low-cost potential, simple processibility, a wide range of applications from portable power generation to power-windows, photoelectrochemical solar cells like dye-sensitized solar cells (DSCs) represent one of the promising methods for future large-scale power production directly from sunlight. While the sensitization of n-type semiconductors (n-SC) has been intensively studied, the use of p-type semiconductor (p-SC), e.g., the sensitization of wide bandgap p-SC and hole transport materials with p-SC have also been attracting great attention. Recently, it has been proved that the p-type inorganic semiconductor as a charge selective material or a charge transport material in organometallic lead halide perovskite solar cells (PSCs) shows a significant impact on solar cell performance. Therefore the study of p-type semiconductors is important to rationally design efficient DSCs and PSCs. In this review, recent published works on p-type DSCs and PSCs incorporated with an inorganic p-type semiconductor and our perspectives on this topic are discussed.

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Solid state p-type dye-sensitized solar cells: concept, experiment and mechanism

Cited by 48 publications

References 34 publications

An Indacenodithieno[3,2‐b]thiophene‐Based Organic Dye for Solid‐State p‐Type Dye‐Sensitized Solar Cells

An Indacenodithieno[3,2‐b]thiophene‐Based Organic Dye for Solid‐State p‐Type Dye‐Sensitized Solar Cells

Solid state p-type dye sensitized NiO–dye–TiO₂ core–shell solar cells

Inorganic p-Type Semiconductors: Their Applications and Progress in Dye-Sensitized Solar Cells and Perovskite Solar Cells

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Solid state p-type dye-sensitized solar cells: concept, experiment and mechanism

Cited by 48 publications

References 34 publications

An Indacenodithieno[3,2‐b]thiophene‐Based Organic Dye for Solid‐State p‐Type Dye‐Sensitized Solar Cells

An Indacenodithieno[3,2‐b]thiophene‐Based Organic Dye for Solid‐State p‐Type Dye‐Sensitized Solar Cells

Solid state p-type dye sensitized NiO–dye–TiO2 core–shell solar cells

Inorganic p-Type Semiconductors: Their Applications and Progress in Dye-Sensitized Solar Cells and Perovskite Solar Cells

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Solid state p-type dye sensitized NiO–dye–TiO₂ core–shell solar cells