Efficient monolithic dye sensitized solar cells with eco-friendly silica-titania spacer layers

Santos, Fátima; Hora, Carolina; Bernardo, Gabriel; Ivanou, Dzmitry; Mendes, Adélio

doi:10.1016/j.solener.2019.03.056

Cited by 9 publications

(16 citation statements)

References 24 publications

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“…M-DSSC devices were assembled according to the configuration described elsewhere. 27 An 80 ± 5 nm TiO 2 blocking layer was deposited by spray pyrolysis at 450 °C. The precursor solution was composed of 7.0 mL of anhydrous isopropyl alcohol, 0.6 mL of titanium diisopropoxide bis(acetylacetonate), and 0.4 mL of acetylacetone.…”

Section: Methodsmentioning

confidence: 99%

“…In M-DSSCs, dye delivery to the TiO 2 occurs through the porous spacer and counterelectrode layers. Then, the sensitization time has to be optimized for the monolithic architecture, 27 a crucial parameter often neglected by researchers. Figure 8 shows the normalized metrics (PCE, J SC , V OC , and FF) of M-DSSCs vs time of sensitization in YD2-o-C8 solution.…”

Section: Methodsmentioning

confidence: 99%

“…M-DSSC devices were assembled according to the configuration described elsewhere . An 80 ± 5 nm TiO 2 blocking layer was deposited by spray pyrolysis at 450 °C.…”

Section: Experimental Sectionmentioning

confidence: 99%

“…22,23 The use of a highly reflective electrical spacer layer rendered a M-DSSC with the highest reported PCE of 8.3%. 27 Surprisingly, all of the advances in liquid-junction M-DSSCs are presented so far only for the original archetype of iodine-mediated devices.…”

Section: Introductionmentioning

confidence: 99%

“…Since the first reported M-DSSCs in 1996 with a PCE of 6.7%, they have progressed due to the development of new catalytic and low-cost counter-electrodes − and electrical spacer layers. ,, Implementation of counter-electrodes made from platinized graphite/carbon-black resulted in a PCE of 7.6%; physically attached PEDOT films and platinized Cr foil counter-electrodes allowed reaching a PCE of 7.7 and 8.0%, respectively. , The use of a highly reflective electrical spacer layer rendered a M-DSSC with the highest reported PCE of 8.3% . Surprisingly, all of the advances in liquid-junction M-DSSCs are presented so far only for the original archetype of iodine-mediated devices.…”

Section: Introductionmentioning

confidence: 99%

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Efficient Liquid-Junction Monolithic Cobalt-Mediated Dye-Sensitized Solar Cells for Solar and Artificial Light Conversion

Santos

Hora

Ivanou

et al. 2021

ACS Appl. Energy Mater.

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Due to the extremely high power conversion efficiency under indoor light, aesthetic appeal, and safety, the mature technology of dye-sensitized solar cells (DSSCs) is now considered as one of the most budding technologies to address the fast-growing need for cordless power in countless IoT devices and wireless sensors. The monolithic design of DSSCs (M-DSSCs) is technologically attractive for commercial production offering straightforward processing in-series modules, low cost, and compactness. The advancements in liquid-junction M-DSSCs reported so far are related only to conventional Ru-dye and I 3 − /I − electrolyte devices. The present study reports a M-DSSC incorporating a Co(III)/(II)(bpy) 3 redox shuttle and a YD2-o-C8 porphyrin dye and developed using commercial materials. The apparent activation energy for electron transfer, electron charge-transfer resistance, and exchange current density on FTO−Pt nanoparticles, Pt metal, graphite/carbon-black, and PEDOT:PSS in the cobalt electrolyte were determined to identify the favorable counter-electrode. The impact of the electrical spacer layers made from conventional ZrO 2 and highly reflective rutile TiO 2 on the photocurrent quantum yield was also assessed. The recombination-suppressing additive concentration in the electrolyte and photoanode sensitization conditions were thoroughly optimized to render M-DSSC devices with a photocurrent conversion efficiency of 9.5% under 1-sun illumination, which is by far the highest reported for M-DSSCs. The high power conversion efficiency of ca. 22% was attained under 1000 lx artificial light, making the developed M-DSSCs very attractive for indoor use.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…M-DSSC devices were assembled according to the configuration described elsewhere . An 80 ± 5 nm TiO 2 blocking layer was deposited by spray pyrolysis at 450 °C.…”

Section: Experimental Sectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Efficient Liquid-Junction Monolithic Cobalt-Mediated Dye-Sensitized Solar Cells for Solar and Artificial Light Conversion

Santos

Hora

Ivanou

et al. 2021

ACS Appl. Energy Mater.

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Solid‐State Monolithic Dye‐Sensitized Solar Cell Exceeding 10% Efficiency Using a Copper‐Complex Hole Transport Material and a Carbon Counter‐Electrode

Santos,

Ivanou,

Mendes

2023

Solar RRL

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The continuous growth of the Internet of Things (IoT) devices operating indoor triggered the development of indoor photovoltaic (iPV) technologies to power them. Dye‐sensitized solar cells (DSSCs) with Cu‐based complexes as hole transport material (HTM) and organic sensitizers are among the most efficient, safe and sustainable options for iPVs. The typical copper‐mediated DSSCs are assembled in the conventional configuration using PEDOT:PSS counter‐electrodes. In this work a highly efficient solid–state monolithic dye‐sensitized solar cells (M–DSSCs) with a copper‐complex HTM and a carbon counter–electrode was developed. The monolithic structure allows a low‐cost and direct design for producing in‐series modules, which is very attractive for the market‐scale production of iPVs. Typical devices displayed average power conversion efficiencies (PCEs) of ca. 9.5‐10 % under 1‐sun simulated solar light provided by a Class ABA LED Solar Simulator. The best energy performing device rendered a stable PCE of 10.4 % under 1‐sun, and PCEs of 26.1 % and 28.5 % under 600 lx and 1000 lx indoor light, respectively. The performance of a typical device was independently confirmed at Fraunhofer ISE, with a certified PCE of 8.7 % using a Class AAA Xenon Solar Simulator (AM1.5G, 25 ºC).This article is protected by copyright. All rights reserved.

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Eco-design for dye solar cells: From hazardous waste to profitable recovery

Miettunen

Santasalo-Aarnio

2021

Journal of Cleaner Production

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Efficient monolithic dye sensitized solar cells with eco-friendly silica-titania spacer layers

Cited by 9 publications

References 24 publications

Efficient Liquid-Junction Monolithic Cobalt-Mediated Dye-Sensitized Solar Cells for Solar and Artificial Light Conversion

Efficient Liquid-Junction Monolithic Cobalt-Mediated Dye-Sensitized Solar Cells for Solar and Artificial Light Conversion

Solid‐State Monolithic Dye‐Sensitized Solar Cell Exceeding 10% Efficiency Using a Copper‐Complex Hole Transport Material and a Carbon Counter‐Electrode

Eco-design for dye solar cells: From hazardous waste to profitable recovery

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