Highly efficient, large area, roll coated flexible and rigid OPV modules with geometric fill factors up to 98.5% processed with commercially available materials

Lucera, Luca; Machui, Florian; Kubiš, Peter; Schmidt, Hans-Dieter; Adams, Jens; Strohm, Sebastian; Ahmad, Taimoor; Forberich, Karen; Egelhaaf, Hans‐Joachim; Brabec, Christoph J.

doi:10.1039/c5ee03315b

Cited by 154 publications

(125 citation statements)

References 25 publications

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“…A key difference between the batch and roll-to-roll processes is the time constraint in the roll-to-roll process. [34,37,39,40,42,[78][79][80][81][82] We found the record PCEs of slot-die coated PSCs have been surprisingly low, as shown in Figure 5d. Therefore, time-consuming processes, such as solvent soaking technique, cannot be used in the roll-to-roll process.…”

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confidence: 78%

“…[31][32][33][34][35] For example, Yan and co-workers showed that blade-coated PSCs with PffBT4T-2OD:PC 71 BM based BHJ can produce a high PCE of up to 9.9%. [37][38][39] However, the slot-die method has not been well studied and the efficiency of slot-die based devices has still remained low, compared to the high PSCs in the recent reported spin-coating based PSCs. [31] In particular, 12.88% PCE was achieved in doctor blade-coated PBDB-TF:IT-4F PSCs through controlling the surface morphology of the ZnO interlayer; [36] and more recently, Hou and co-workers demonstrated a top efficiency of 13.1% from the blade-coated PSCs based on T1:IT-4F.…”

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confidence: 99%

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Slot‐Die and Roll‐to‐Roll Processed Single Junction Organic Photovoltaic Cells with the Highest Efficiency

Lee

Seo

Kwon

et al. 2019

Advanced Energy Materials

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PSC-efficiencies have increased with intensive effort on novel materials synthesis, film-morphology engineering, and interface control, and the state-of-the-art PSCs have eventually produced a high power conversion efficiency (PCE) of over 15%. [9][10][11][12][13][14][15][16][17][18][19][20][21] For example, Zou et al. reported a newly synthesized nonfullerene acceptor (NFA), Y6, having an electron-deficient-core-based fused ring with a benzothiadiazole unit, and the resulting single-junction PSCs based on PM6:Y6 BHJ showed an excellent efficiency of 15.7% and a certified PCE of 14.9%. [20] In addition, Hou and co-workers recently reported a series of copolymers, and in particular, the copolymer T1 (poly[(2,6-(4,8-bis(5-(2-ethylhexyl)-4-fluorothiophen-2-yl)-benzo[1,2-b:4,5-b′] dithiophene))-alt-(5,5-(1′,3′-di-2-thienyl-5′,7′-bis(2-ethylhexyl)benzo[1′,2′-c:4′,5′-c′] dithiophene-4,8-dione)] (PBDB-TF) = 0.8 and PTO2 = 0.2) produced the bestefficiency of 15.1% and certified PCE of 14.6% in PSCs using 3,9-bis(2-methylene-((3-(1,1-dicyanomethylene)-6,7difluoro)-indanone))-5,5,11,11-tetrakis(4hexylphenyl)-dithieno[2,3-d:2′,3′-d′]-s-indaceno[1,2-b:5,6-b′] dithiophene (IT-4F) acceptor. [21] One of the representative routes to further enhance PSCefficiency is broadening the absorption bandwidth of the active film for better sunlight absorption. [21][22][23] To this end, the ternary The record efficiency of the state-of-the-art polymer solar cells (PSCs) is rapidly increasing, due to the discovery of high-performance photoactive donor and acceptor materials. However, strong questions remain as to whether such high-efficiency PSCs can be produced by scalable processes. This paper reports a high power conversion efficiency (PCE) of 13.5% achieved with single-junction ternary PSCs based on PTB7-Th, PC 71 BM, and COi8DFIC fabricated by slot-die coating, which shows the highest PCE ever reported in PSCs fabricated by a scalable process. To understand the origin of the high performance of the slot-die coated device, slot-die coated photoactive films and devices are systematically investigated. These results indicate that the good performance of the slot-die PSCs can be due to a favorable moleculestructure and film-morphology change by introducing 1,8-diiodooctane and heat treatment, which can lead to improved charge transport with reduced carrier recombination. The optimized condition is then used for the fabrication of large-area modules and also for roll-to-roll fabrication. The slot-die coated module with 30 cm 2 active-area and roll-to-roll produced flexible PSC has shown 8.6% and 9.6%, respectively. These efficiencies are the highest in each category and demonstrate the strong potential of the slot-die coated ternary system for commercial applications. Photovoltaic DevicesThe ORCID identification number(s) for the author(s) of this article can be found under https://doi.Over the past few decades, solution-processed bulk-heterojunction (BHJ) polymer solar cells (PSCs) have continued to demonstrate their potential as a high-ef...

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confidence: 78%

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confidence: 99%

Slot‐Die and Roll‐to‐Roll Processed Single Junction Organic Photovoltaic Cells with the Highest Efficiency

Lee

Seo

Kwon

et al. 2019

Advanced Energy Materials

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“…37 On top of IMI, we processed commercial ZnO nanoparticles (Nanograde) as the electron selective electrode. As a photoactive layer we coated a medium band gap conjugated polymer PBTZTstat-BDTT-8 38,39 (Fig. S1, ESI †) blended with phenyl-C61-butyric acid methyl ester [60]PCBM on top of ZnO (see Materials and methods for details).…”

Section: Laminated Solar Cellsmentioning

confidence: 99%

Organic and perovskite solar modules innovated by adhesive top electrode and depth-resolved laser patterning

Spyropoulos

Quiroz

Salvador

et al. 2016

Energy Environ. Sci.

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We demonstrate an innovative solution-processing fabrication route for organic and perovskite solar modules via depth-selective laser patterning of an adhesive top electrode. This yields unprecedented power conversion efficiencies of up to 5.3% and 9.8%, respectively.We employ a PEDOT:PSS-Ag nanowire composite electrode and depth-resolved post-patterning through beforehand laminated devices using ultra-fast laser scribing. This process affords low-loss interconnects of consecutive solar cells while overcoming typical alignment constraints. Our strategy informs a highly simplified and universal approach for solar module fabrication that could be extended to other thin-film photovoltaic technologies.

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“…around 8 cm width and greater). Nevertheless, the highest module efficiencies are around 5.3% for rigid modules and around 5% for flexible modules on a large scale . Generally the literature would cite 10% efficiency as the goal for such devices, but recent experience has shown that, due to their additional qualities such as variable colours and adaptability to building aesthetics and needs, lower efficiencies are acceptable .…”

Section: Introductionmentioning

confidence: 99%

Charge transport and its characterization using photo-CELIV in bulk heterojunction solar cells

et al. 2016

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This mini-review gives a simple overview of the workings of organic photovoltaic (OPV) devices, the way in which charge transfer occurs through the active layers, and then introduces how photo-induced charge carrier extraction by linearly increasing voltage (photo-CELIV) and time of flight (TOF) techniques can be employed to give comprehensive indications of charge carrier mobility, density and recombination in OPVs. It is shown how photo-CELIV and TOF characterizations, using extraction current transients, can give an understanding of degradation mechanisms through observation of the trapping of charge carriers and bimolecular recombination. Examples of deployment and the interpretation of the results are given. It is hoped that this brief introduction will serve as a stepping stone into more in-depth papers and books and encourage wider use of photo-CELIV and TOF technologies which can be employed with whole devices.

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Highly efficient, large area, roll coated flexible and rigid OPV modules with geometric fill factors up to 98.5% processed with commercially available materials

Abstract: Flexible roll-coated and rigid organic PV modules, solution processed on a large area, are reported with efficiencies of 4.2% and 5.3%, respectively.

Cited by 154 publications

References 25 publications

Slot‐Die and Roll‐to‐Roll Processed Single Junction Organic Photovoltaic Cells with the Highest Efficiency

Slot‐Die and Roll‐to‐Roll Processed Single Junction Organic Photovoltaic Cells with the Highest Efficiency

Organic and perovskite solar modules innovated by adhesive top electrode and depth-resolved laser patterning

Charge transport and its characterization using photo-CELIV in bulk heterojunction solar cells

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