Technology development for roll-to-roll production of organic photovoltaics

Galagan, Yulia; Vries, Ike G. de; Langen, Arjan; Andriessen, Ronn; Verhees, Wiljan; Veenstra, Sjoerd; Kroon, Jan

doi:10.1016/j.cep.2010.07.012

Cited by 155 publications

(103 citation statements)

References 41 publications

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“…The example of successful roll-to-roll coating of the hole transport layer (PEDOT:PSS) and the photoactive layer (P3HT/PCBM) by slot die is illustrated by (Galagan et al, 2011b). The PEDOT:PSS (OrgaconTM) formulation for slot die coating was delivered by Agfa-Gevaert.…”

Section: Roll-to-roll Coated Pedot:pss and Photoactive Layers (Am Examentioning

confidence: 99%

“…1. Layer thickness of roll-to-roll slot die coated PEDOR:PSS layer, measured every 5 cm in coating direction (reproduced with permission from (Galagan et al, 2011b), Copyright 2010, Elsevier B.V.).…”

Section: Roll-to-roll Coated Pedot:pss and Photoactive Layers (Am Examentioning

confidence: 99%

“…Table 5. The characteristics of photovoltaic devices, produced from different solvents, with and without thermal annealing (110°C during 10 minutes) (Galagan et al, 2011b).…”

Section: Inks and Solventsmentioning

confidence: 99%

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Organic Photovoltaics: Technologies and Manufacturing

Galagan¹,

Andriessen²

2012

Third Generation Photovoltaics

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Section: Roll-to-roll Coated Pedot:pss and Photoactive Layers (Am Examentioning

confidence: 99%

Section: Roll-to-roll Coated Pedot:pss and Photoactive Layers (Am Examentioning

confidence: 99%

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Organic Photovoltaics: Technologies and Manufacturing

Galagan¹,

Andriessen²

2012

Third Generation Photovoltaics

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“…[16][17][18] Recently, impressive progress has been achieved in the field of organic photovoltaic (OPV) device production by the R2R solution based approach. [19][20][21] In this paper, we report on our own results regarding the R2R processing of OLED devices by wet deposition of functional inks for the hole injection and emissive layers.…”

Section: Introductionmentioning

confidence: 99%

Toward high volume solution based roll-to-roll processing of OLEDs

et al. 2017

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The large volume production of flexible electronics by solution based roll-to-roll (R2R) manufacturing technologies is a promising upscaling strategy for the organic electronics industry. Typical optoelectronic devices like organic light emitting diodes (OLEDs) consist of a complex stack of functional layers. Solution deposition of these structures eliminates the need for expensive vacuum processing. This contribution presents approaches for solution based R2R production methods of functional OLED layers on flexible polymer substrates. The development of a R2R line with two slot-die coating stations is discussed which can deposit two uniform layers consecutively in a single run ("tandem coating") at web speeds up to 30 m/min. Furthermore, it offers the unique feature that there is no contact between the rollers and the top side of the substrate where the functional coating is deposited. Thereby, an important source of particle contamination and other damage to the device is eliminated. In addition to continuous deposition, stripe and intermittent coating techniques have been developed, allowing the production of patterned layers. Finally, examples will be shown of OLEDs where two functional materials are deposited by R2R processing from solution.

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“…In the flexible electronics literature, multiple publications demonstrated novel energy materials and devices, such as thin-film flexible photovoltaics (PVs) [1][2][3][4][5][6][7][8][9][10] and carbon-based supercapacitors (SCs) [11][12][13][14][15][16][17][18] that are roll-to-roll (R2R) compatible. A few publications have further integrated a PV material with SCs to form an energy device capable of solar energy harvest and storage.…”

mentioning

confidence: 99%

Integrated Flexible Conversion Circuit between a Flexible Photovoltaic and Supercapacitors for Powering Wearable Sensors

Thostenson

Kim

et al. 2018

J. Electrochem. Soc.

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Integration of an organic photovoltaic (PV) with carbon-based supercapacitors (SCs) into a system for solar energy harvesting and storage is interesting for off-grid applications such as mobile electronics and sensor systems. Presented here is a conversion and control circuit (CC) on a flexible polyimide substrate in an integrated flexible energy harvesting and storage device compatible with roll-to-roll manufacturing (R2R). The CC is capable of PV max power-point tracking, DC-DC voltage boost of the PV output across a bank of four SCs, and charge balancing across the bank of SCs. This system is compared to a conventional direct connection between the PV and the SCs. More energy can be harvested from the PV and stored in the SC bank when using the CC to drive the PV at peak power, boost the output voltage, and balance it across serial connection of SCs. Finally, the CC, PV, and SCs are mounted to a 3D printed substrate and circuit which is used to power a wearable sensor. Due to these benefits and ability to be integrated with R2R, the presented CC provides a practical means of improving wearable solar energy harvesting and storage systems. In the flexible electronics literature, multiple publications demonstrated novel energy materials and devices, such as thin-film flexible photovoltaics (PVs)1-10 and carbon-based supercapacitors (SCs) [11][12][13][14][15][16][17][18] that are roll-to-roll (R2R) compatible. A few publications have further integrated a PV material with SCs to form an energy device capable of solar energy harvest and storage. 17,[19][20][21][22][23][24] Although simply connecting the devices without a conversion and control circuit (CC) that controls the flow of charge and the load impedance experienced by the PV can harvest and store energy, there are three problems that arise from this configuration: (i) the PV elements are operated inefficiently at suboptimal voltage-current conditions, far from the maximum-power point (MPP), (ii) undercharging the SCs due to low PV output voltage, and (iii) unbalanced charge storage across a bank of SCs with the risk of overcharging some while undercharging other SCs as well as a low usable combined capacity. These problems result in an inefficient and impractical energy device. In large PV systems, a CC typically mitigates these problems. However, such CCs use a discrete design with stiff bus bars or rigid circuit boards, which are incompatible with the flexible film design of the rest of the system. The lack of availability of a R2R-compatible CC has limited the realization of a R2R energy fabric for practical applications such as wearable sensors and the internet of things (IoT). 25 Many techniques have been developed to enable R2R-compatible packaging of CCs. Within the CC architecture, switching-mode DC-DC boost converters have been given considerable attention. For example, Z-folded flexible planar transformers have been developed that allow R2R production. 26 Planar geometries of flexible foils for use as low-profile inductors 27 and flip-chip flex-ci...

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Technology development for roll-to-roll production of organic photovoltaics

Cited by 155 publications

References 41 publications

Organic Photovoltaics: Technologies and Manufacturing

Organic Photovoltaics: Technologies and Manufacturing

Toward high volume solution based roll-to-roll processing of OLEDs

Integrated Flexible Conversion Circuit between a Flexible Photovoltaic and Supercapacitors for Powering Wearable Sensors

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