Highly Efficient Large-Area Organic Photovoltaic Module with a 350 nm Thick Active Layer Using a Random Terpolymer Donor

Park, Sung Min; Kurniawan, Daniel; Son, Jeong Gon; Noh, Jun Hong; Ahn, Hyungju; Son, Hae Jung

doi:10.1021/acs.chemmater.9b05399

Cited by 21 publications

(10 citation statements)

References 47 publications

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“…Comprehensively, the RS-LBL deposition of blend film facilitates the realization of a highly efficient solar module, in which the PCE of 13.47% is the highest efficiency reported thus far using a binary blending over 30 cm 2 large-area solar module (Figure 5d and Table S6, Supporting Information). [44][45][46][47][48][49] At present, various encapsulation techniques [50,51] have been developed to greatly resist moisture and UV illumination. Yet, the thermal stability is still critical for practical of OSCs [52] .…”

Section: Photovoltaic Performance and Large Area Modulesmentioning

confidence: 99%

Fluid Mechanics Inspired Sequential Blade‐Coating for High‐Performance Large‐Area Organic Solar Modules

Zhang

Yang

Chen

et al. 2022

Adv Funct Materials

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Despite rapid advances in the field of organic solar cells (OSCs), high-performance large-scale OSC modules are limited. In this study, it is found that the non-Newtonian fluid feature of conjugated polymer primarily causes the wedge-shaped mass (donor and/or acceptor component)/phase distribution of blends in large-scale blade coating, which results in the lower module efficiency. To address the critical issue in printing manufacturing, a reversible and sequential layer-by-layer (RS-LBL) deposition method with sequential twice forward/reverse blade-coating of polymer donor and forward bladecoating of Y6 acceptor, is developed for precisely controlling fluid mechanics of PM6:Y6 active layer. Through using the RS-LBL strategy, uniform morphology and favorable phase separation and crystallization are obtained in the 10 × 10 cm 2 active layer. As a result, the RS-LBL-based OSCs show excellent operational stability, and an outstanding PCE of 13.47% is achieved with significantly suppressed charge recombination losses in the 36 cm 2 large-area OSC module, which represents the highest efficiency of binary solar modules with the area over 30 cm 2 . This study provides a feasible route for the next generation of high-performance large-area OSCs and OSC modules.

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Section: Photovoltaic Performance and Large Area Modulesmentioning

confidence: 99%

Fluid Mechanics Inspired Sequential Blade‐Coating for High‐Performance Large‐Area Organic Solar Modules

Zhang

Yang

Chen

et al. 2022

Adv Funct Materials

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“…Thereby, BDT‐Th10 achieved a high PCE of 7.74% from a large‐area module (58.5 cm 2 ) with 350 nm film thickness, indicating that the BDT‐Th10 random terpolymer is potentially applicable to the large‐scale production of OPV modules using a solution process. [ 48 ] PBTZT‐ stat ‐BDTT‐8 random terpolymers based on BT, BDT, and thiophene derivatives were prepared, and the polymers were reported to form uniform films via various coating methods because of their high solution processability. Therefore, the resulting OPV modules exhibited high performance with a wide range of active layer thicknesses.…”

Section: Organic Active Materials Applicable To Large‐area Bhj Filmsmentioning

confidence: 99%

Progress in Materials, Solution Processes, and Long‐Term Stability for Large‐Area Organic Photovoltaics

et al. 2020

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processing at low cost compared with their inorganic counterparts. The first breakthrough in OPV technology was achieved by realizing BHJ active layers with nanoscale bicontinuous network structures of electron donor (D) and acceptor (A) materials; this structure enables efficient exciton separation at the D-A interface. [1] The development of push-pull-type donor polymers has effectively extended the light absorption range of OPVs into the near-infrared (NIR) region, which has ultimately led to substantial improvements in power conversion efficiency (PCE) to greater than 10%. In particular, highly crystalline donor polymers such as PffBT4T-2OD substantially improved charge-transport properties, enabling OPV devices with a BHJ film thickness greater than 200 nm to operate. [2] Historically, fullerene derivatives have been dominantly used as acceptors in OPVs because of their excellent electron-accepting and transporting properties and because they can be prepared with a morphology optimized for efficient charge-carrier generation and transport. [3,4] However, despite such promising characteristics, OPVs based on fullerene derivatives have drawbacks of limited light-absorption properties, poor energylevel tunability, and poor morphological and/or photochemical stability. [5,6] Over the past several years, tremendous efforts have been directed toward the development of nonfullerenebased OPVs to overcome these limitations. The advantages of nonfullerene acceptors over fullerenes include easily tunable energy levels, which enables OPVs to achieve substantially higher open-circuit voltages (V OC s) than conventional fullerenebased devices. [7] In addition, nonfullerene acceptors enable better light absorption properties and therefore generate higher photocurrents than fullerene derivatives. [8] Furthermore, nonfullerene acceptors with appropriate molecular tailoring can provide chemically stable photoactive materials, potentially enhancing long-term device stability. [5] Recent breakthroughs realized through the development of small molecular nonfullerene acceptors have resulted in remarkable enhancements in the PCEs of single-junction OPVs to greater than 17%, which demonstrates the potential for the large-scale manufacture of OPVs. [9] When translating photovoltaic technology from laboratory to commercial products, low cost, high PCE, and high Organic solar cells based on bulk heterojunctions (BHJs) are attractive energy-conversion devices that can generate electricity from absorbed sunlight by dissociating excitons and collecting charge carriers. Recent breakthroughs attained by development of nonfullerene acceptors result in significant enhancement in power conversion efficiency (PCEs) exceeding 17%. However, most of researches have focused on pursuing high efficiency of small-area (<1 cm 2) unit cells fabricated usually with spin coating. For practical application of organic photovoltaics (OPVs) from lab-scale unit cells to industrial products, it is essential to develop efficient technologies that can extend act...

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“…[54] The resulting 18 cm 2 module displayed a PCE of 6.3% with a V OC up to 11.6 V. Recently, Son et al used bar-coating to successfully obtain 58.5 cm 2 -sized modules with 350 nm film thickness by using the random terpolymers (BDT-Th10) and achieved a PCE of 7.74%. [55] Besides, Lim et al adopted a non-halogenated solvent to fabricate ternary-blend modules by D-bar-coating and obtained a high PCE of 9.32% (Figure 7). [56]…”

Section: Current Development Of Modules Of Oscsmentioning

confidence: 99%

Technical Challenges and Perspectives for the Commercialization of Solution‐Processable Solar Cells

Liu

Lee

et al. 2021

Adv Materials Technologies

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As the new‐generation photovoltaic technologies, organic solar cells (OSCs) and perovskite solar cells (PVSCs) offer significant advantages over Si‐ and CdTe‐based solar cells, that is, facile low‐temperature solution processability and excellent cost‐performance ratios. At present, OSCs and PVSCs have achieved very high certified power conversion efficiencies of 17.5% and 25.5%, respectively, which have already approached the efficiencies needed for commercial applications. However, there are still several obstacles that need to be overcome before they can be deployed as new‐generation of printable photovoltaic technologies. More efforts also need to be devoted to finding applicable methods for manufacturing highly efficient, large‐area devices and improving their long‐term operational stability. Thus, this article provides a comprehensive review on the current status and technical challenges for commercializing these two solution‐processable solar cells.

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Highly Efficient Large-Area Organic Photovoltaic Module with a 350 nm Thick Active Layer Using a Random Terpolymer Donor

Cited by 21 publications

References 47 publications

Fluid Mechanics Inspired Sequential Blade‐Coating for High‐Performance Large‐Area Organic Solar Modules

Fluid Mechanics Inspired Sequential Blade‐Coating for High‐Performance Large‐Area Organic Solar Modules

Progress in Materials, Solution Processes, and Long‐Term Stability for Large‐Area Organic Photovoltaics

Technical Challenges and Perspectives for the Commercialization of Solution‐Processable Solar Cells

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