Perovskite Solar Cells with Low-Cost TiO<sub>2</sub> Mesoporous Photoanodes Prepared by Rapid Low-Temperature (70 °C) Plasma Processing

Homola, Tomáš; Pospı́šil, J.; Shekargoftar, Masoud; Svoboda, Tomáš; Hvojník, Matej; Gemeiner, Pavol; Weiter, Martin; Dzik, Petr

doi:10.1021/acsaem.0c02144

Cited by 33 publications

(15 citation statements)

References 72 publications

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“…The silicon content remained relatively stable during the plasma treatment, 24 % on the original coating and 26% after 128 seconds of treatment. The removal of carbon and replacement by oxygen agrees with the results of previous studies [4]. The high-resolution core-level XPS spectra of the films are shown in Figure 1.…”

Section: Resultssupporting

confidence: 89%

“…This has substituted the connections between nanoparticles that form during traditional hightemperature sintering and are necessary for desired properties of the film. It has been shown that these new coatings can be used as photoanodes in photovoltaic devices such as perovskite solar cells, which is the most interesting application of the coating so far [4].…”

Section: Introductionmentioning

confidence: 99%

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PLASMA Oxidation of printed polysiloxane layers

Vida

Dzik

Homola

2021

NANOCON 2021 Conference Proeedings

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Organosilica binders are a promising way to interconnect various nanoparticles in printed coatings for photovoltaic cells and other applications. Post-deposition treatment of printed nanoparticle films with organosilica binders is required to remove the organic moieties and thus achieve the optimal optoelectronic properties of the resulting film. As a result, the polysiloxane binder is converted to almost fully amorphous silica and this process is called mineralization. Atmospheric pressure plasma operating in open air has proven to be the most promising method, as the operating temperature can be kept below 70 °C and the overall treatment time required is in order of minutes. These are significant advantages compared to alternative approaches like thermal sintering, where temperatures required are around 450 °C, or chemical or UV light treatment, where the treatment times extend into the order of hours. To better understand the underlying chemistry in the interaction of the ambient air plasma and the organosilica binder we performed an X-ray photoelectron spectroscopy (XPS) study on the plasma-treated films of silica binder, regularly used with titania nanoparticles. The detailed analysis of core-level spectra of C 1s, O 1s and Si 2p were used to observe the removal of methyl groups from the film and gradual transformation into amorphous SiO2. The scanning electron microscope revealed significant patterning of the surface by interaction with plasma after exposures longer than 16 seconds.

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Section: Resultssupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

PLASMA Oxidation of printed polysiloxane layers

Vida

Dzik

Homola

2021

NANOCON 2021 Conference Proeedings

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“…The coplanar surface dielectric barrier discharge was already tested for mild treatment of perovskite layers in p‐i‐n PSCs leading to better stability [ 50 ] and rapid low‐temperature fabrication of m‐TiO 2 electron transporting layer in n‐i‐p PSCs. [ 51 ] In this work, the SnO 2 surfaces were exposed to atmospheric argon plasma for 5 min. Figure S2, Supporting Information, shows a characterization of the argon plasma used in this study together with a visualization of the microdischarges generated.…”

Section: Methodsmentioning

confidence: 99%

Low‐Temperature and Rapid Deposition of an SnO₂ Layer from a Colloidal Nanoparticle Dispersion for Use in Planar Perovskite Solar Cells

et al. 2021

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Deposition of the electron transport layer (ETL) is an important step in the manufacture of low‐cost, solution‐processed perovskite solar cells (PSCs). Thermal annealing processes account for a major part of the energy consumption involved in the fabrication of PSCs. The current paper presents a plasma‐based and highly convenient method (5 min, <60 °C) for the deposition of SnO2 films (PT‐SnO2) from a colloidal nanoparticle dispersion. A comparative evaluation of PT‐SnO2 films with those created by state‐of‐the‐art thermal annealing (30 min, 180 °C) (TA‐SnO2) is made herein. The key mechanism in the formation of the SnO2 layer is explained in relation to the evaporation of the dispersion medium. This comparison of PT‐SnO2 and TA‐SnO2 indicates a considerable difference in terms of energy consumption directly relevant to the low‐cost manufacture of PSCs. Photoluminescence analysis revealed no particular differences in the charge extraction of the two types of SnO2 films. The SnO2 films were subsequently employed as an ETL in planar n‐i‐p PSCs. Results revealed that the PSC resulting from PT‐SnO2 yielded an efficiency of 15.17%, similar to that of 15.91% corresponding to TA‐SnO2. In addition, the PSC fabricated on the PT‐SnO2 maintaining ≈80% of its initial performance after 21 days in ambient conditions.

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“…Indoor light-harvesting perovskite solar cells with conversion efficiencies as high as 22.6% at 400 lux on a flexible glass substrate with CH 3 NH 3 PbI 3 as light absorber has been recently reported. [28] Beyond high efficiencies, perovskite solar cells also offer additional benefits, such as low-cost integration, [43,44] mechanical flexibility, [45] and ability to be manufactured on flexible substrates. [46] Among various kinds of perovskite solar cells, the carbon electrode-based perovskite solar cells (CPSCs) are regarded as a promising alternative architecture to address the stability and scalability challenges.…”

Section: Introductionmentioning

confidence: 99%

Self‐Powered Organic Electrochemical Transistors with Stable, Light‐Intensity Independent Operation Enabled by Carbon‐Based Perovskite Solar Cells

Surendran

Chen

Lew

et al. 2021

Adv Materials Technologies

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of physiological signals. Energy harvesting from ambient energy sources that prevent the need to charge or recharge a battery offers an excellent path for self-power functionality. Many groups have demonstrated self-powered biomedical devices using environmental sources such as ambient light with solar cells, [1][2][3][4][5] body heat with thermoelectric devices, [6][7][8][9][10][11] and motion with triboelectric [12][13][14][15][16][17] or piezoelectric devices. [18][19][20][21][22] In particular, tapping into solar energy through photovoltaics (PV) has demonstrated many advantages such as easy deployability, [23][24][25][26] and sufficient energy density [27] to meet the energy demands of wearable electronics for long-term usage. Various solar cell technologies have been implemented on autonomous devices such as arm bands, [23] electrocardiogram (ECG) devices, [24,25] and wearable global positioning system (GPS) tracking devices. [26] However, there are several challenges in today's solar cells that hamper their use as viable energy sources for wearable applications. Unlike the conventional operation of solar cells under actual one sun irradiation conditions, wearable usages typically require indoor operation which has much weaker light intensity (≈0.44 mW cm −2 ). [28] However, the efficiencies of most solar cell technologies are limited at low light illumination and thus reducing the energy autonomy for indoor applications. It is therefore challenging to drive sensing systems that are complicated or have high power consumption in an indoor light (for example, fluorescent lamp) environment. Under the typical outdoor illuminating condition, there is a higher density of photogenerated charge carriers, and hence most of the electronic disorders, defects, or trap sites that are present in the solar cell can be filled easily. However, the density of photogenerated carriers is significantly reduced under indoor ambient lighting condition and thus the density of defects or trap sites cannot be filled efficiently, leading to shunting effects and substantial power loss of the PV devices.Specifically, the open-circuit voltage (V oc ) drops severely under low light illumination (< 1-10 mW cm −2 ), which limits the driving capability and reliability for the power source. [29][30][31] Furthermore, for indoor light-harvesting, it is essential to note that the spectral content provided by light-emitting diodes (LEDs) or Wearable sensors and electronics for health and environment monitoring are mostly powered by batteries or external power supply, which requires frequent charging or bulky connecting wires. Self-powered wearable electronic devices realized by integrating with solar cells are becoming increasingly popular due to their ability to supply continuous and long-term energy to power wearable devices. However, most of the solar cells are vulnerable to significant power losses with decreasing light intensity in indoor environment, leading to an errant device operation. Therefore, stable autonomous energy in a reliable a...

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Perovskite Solar Cells with Low-Cost TiO₂ Mesoporous Photoanodes Prepared by Rapid Low-Temperature (70 °C) Plasma Processing

Cited by 33 publications

References 72 publications

PLASMA Oxidation of printed polysiloxane layers

PLASMA Oxidation of printed polysiloxane layers

Low‐Temperature and Rapid Deposition of an SnO₂ Layer from a Colloidal Nanoparticle Dispersion for Use in Planar Perovskite Solar Cells

Self‐Powered Organic Electrochemical Transistors with Stable, Light‐Intensity Independent Operation Enabled by Carbon‐Based Perovskite Solar Cells

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Perovskite Solar Cells with Low-Cost TiO2 Mesoporous Photoanodes Prepared by Rapid Low-Temperature (70 °C) Plasma Processing

Cited by 33 publications

References 72 publications

PLASMA Oxidation of printed polysiloxane layers

PLASMA Oxidation of printed polysiloxane layers

Low‐Temperature and Rapid Deposition of an SnO2 Layer from a Colloidal Nanoparticle Dispersion for Use in Planar Perovskite Solar Cells

Self‐Powered Organic Electrochemical Transistors with Stable, Light‐Intensity Independent Operation Enabled by Carbon‐Based Perovskite Solar Cells

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Product

Resources

About

Perovskite Solar Cells with Low-Cost TiO₂ Mesoporous Photoanodes Prepared by Rapid Low-Temperature (70 °C) Plasma Processing

Low‐Temperature and Rapid Deposition of an SnO₂ Layer from a Colloidal Nanoparticle Dispersion for Use in Planar Perovskite Solar Cells