Perovskite Photovoltaics on Roll-To-Roll Coated Ultra-thin Glass as Flexible High-Efficiency Indoor Power Generators

Castro‐Hermosa, Sergio; Lucarelli, Giulia; Top, Michiel; Fahland, Matthias; Fahlteich, John; Brown, Thomas M.

doi:10.1016/j.xcrp.2020.100045

Cited by 83 publications

(87 citation statements)

References 45 publications

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“…Notably, spray-coated SnO 2 -based devices showed a better performance at low intensity light, which suggests that these cells might be interesting for indoor applications. 57 The same average value of V OC for both spray and spin SnO 2 cells and slightly improvement of all the other electrical parameters of the solar device in sprayed cells is observed compared to spin-coated cells (see Figure S4 ). The slope of the V OC and FF vs light intensity curves ( Figure 5 c,d) is smaller for devices based on spray SnO 2 (1.32 kT / q and −4.2, respectively) compared to cells based on spin SnO 2 (1.92 kT / q and −6.39, respectively), indicating high electron transporting in spray-based devices.…”

Section: Resultssupporting

confidence: 59%

Laser-Scribing Optimization for Sprayed SnO₂-Based Perovskite Solar Modules on Flexible Plastic Substrates

Taheri

Rossi

Lucarelli

et al. 2021

ACS Appl. Energy Mater.

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Flexible perovskite solar cells (FPSCs) are prime candidates for applications requiring a highly efficient, low-cost, lightweight, thin, and even foldable power source. Despite record efficiencies of lab-scale flexible devices (19.5% on a 0.1 cm 2 area), scalability represents a critical factor toward commercialization of FPSCs. Large-area automized deposition techniques and efficient laser scribing procedures are required to enable a high-throughput production of flexible perovskite modules (FPSMs), with the latter being much more challenging compared to glass substrates. In this work, we introduce the combined concept of laser scribing optimization and automatized spray-coating of SnO 2 layers. Based on a systematic variation of the incident laser power and a comprehensive morphological and electrical analysis of laser-based cell interconnections, optimal scribing parameters are identified. Furthermore, spray-coating is used to deposit uniform compact SnO 2 films on large-area (>120 cm 2 ) plastic substrates. FPSCs with spray-coated SnO 2 show comparable performance as spin-coated cells, delivering up to 15.3% efficiency on small areas under 1 sun illumination. When upscaling to large areas, FPSMs deliver 12% power conversion efficiency (PCE) and negligible hysteresis on 16.8 cm 2 and 11.7% PCE on a 21.8 cm 2 active area. Our perovskite devices preserved 78% efficiency when the active area increased from 0.1 to 16.8 cm 2 , demonstrating that our combined approach is an effective strategy for large-area manufacturing of perovskite devices on flexible substrates.

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Section: Resultssupporting

confidence: 59%

Laser-Scribing Optimization for Sprayed SnO₂-Based Perovskite Solar Modules on Flexible Plastic Substrates

Taheri

Rossi

Lucarelli

et al. 2021

ACS Appl. Energy Mater.

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“…Here, PSCs with spiro‐OMeTAD have not been covered as there is a good number of literature available on the same under ambient dim light illumination. [ 52–54 ] Hence, these results would attract attention by the scientific community on the development of facile photoactive HTMs toward commercialization of effective ss‐DSC and PSCs for indoor applications.…”

Section: Resultsmentioning

confidence: 99%

‘V’ Shape A–D–A‐Type Designed Small Hole Conductors for Efficient Indoor and Outdoor Staging from Solid Dye‐Sensitized Solar Cells and Perovskite Solar Cells

et al. 2021

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With the exploration of new building blocks, a series of small organic hole transporting materials (SOHTMs) are designed and synthesized through simple microwave irradiation and systematically investigated in solid‐state dye‐sensitized solar cells (ss‐DSCs) and perovskite solar cells (PSCs). These V‐shaped SOHTMs having A–D–A architecture are endowed with low cost, better thermal stability, and good optical and electrochemical property, which respond to low indoor light and 1 sun illumination. The SOHTMs contain dibenzothiophene (DBT) and dibenzofuran (DBF) as core donors substituted with heteroaromatic molecules like naphthalene and indole, which are coded as SPH 1–SPH 4. ss‐DSCs and PSCs with SPH 4 (with LiTFSI) as SOHTMs exhibited a power conversion efficiency (PCE) amounting to 5.2% and 15.4%, respectively, under 1 sun illumination. Moreover, the applications of ss‐DSCs and PSCs in indoor environments are studied. Due to the good match with the indoor light emitting diode (LED) source, SPH 4 delivered PCEs of 26.3% (for ss‐DSCs) and 23.9 % (for PSCs) under 1800 lux illumination, which are very close to the PCE values obtained for standard hole transporting materials (HTMs) like spiro‐OMeTAD. Thus, these new SOHTMs provide the ultimate solution for the fabrication of photovoltaic devices, resulting in superior PCE under indoor light.

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“…To address this problem, Hermosa et al developed a conductive ultra-thin exible glass (FG) with high-temperature compatibility (700 C) as a promising alternative to PET. 66 The ITO coated FG showed notable transmittance >80%, a sheet resistance of 13 U per square and bendability surpassing 1600 bending cycles at 20.5 mm curvature. The resulting PPV cells delivered PCEs of >22% under 400 lx LED illumination based on the device structure of FG/ITO/SnO 2 /m-TiO 2 /MAPbI 3 /spiro-OMeTAD/Au (see J-V curve in Fig.…”

Section: Ppvs For Indoor Applicationmentioning

confidence: 95%

Indoor application of emerging photovoltaics—progress, challenges and perspectives

et al. 2020

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Perovskite Photovoltaics on Roll-To-Roll Coated Ultra-thin Glass as Flexible High-Efficiency Indoor Power Generators

Cited by 83 publications

References 45 publications

Laser-Scribing Optimization for Sprayed SnO₂-Based Perovskite Solar Modules on Flexible Plastic Substrates

Laser-Scribing Optimization for Sprayed SnO₂-Based Perovskite Solar Modules on Flexible Plastic Substrates

‘V’ Shape A–D–A‐Type Designed Small Hole Conductors for Efficient Indoor and Outdoor Staging from Solid Dye‐Sensitized Solar Cells and Perovskite Solar Cells

Indoor application of emerging photovoltaics—progress, challenges and perspectives

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Perovskite Photovoltaics on Roll-To-Roll Coated Ultra-thin Glass as Flexible High-Efficiency Indoor Power Generators

Cited by 83 publications

References 45 publications

Laser-Scribing Optimization for Sprayed SnO2-Based Perovskite Solar Modules on Flexible Plastic Substrates

Laser-Scribing Optimization for Sprayed SnO2-Based Perovskite Solar Modules on Flexible Plastic Substrates

‘V’ Shape A–D–A‐Type Designed Small Hole Conductors for Efficient Indoor and Outdoor Staging from Solid Dye‐Sensitized Solar Cells and Perovskite Solar Cells

Indoor application of emerging photovoltaics—progress, challenges and perspectives

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Laser-Scribing Optimization for Sprayed SnO₂-Based Perovskite Solar Modules on Flexible Plastic Substrates

Laser-Scribing Optimization for Sprayed SnO₂-Based Perovskite Solar Modules on Flexible Plastic Substrates