Flexible organic photovoltaics based on water-processed silver nanowire electrodes

Sun, Yanna; Chang, Meijia; Meng, Lingxian; Wan, Xiangjian; Gao, Huanhuan; Zhang, Yamin; Zhao, Kai; Sun, Zhenhe; Li, Chenxi; Liu, Shuiren; Wang, Huike; Liang, Jiajie; Chen, Yongsheng

doi:10.1038/s41928-019-0315-1

Cited by 289 publications

(228 citation statements)

References 48 publications

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“…[ 23 ] Although AgNWs demonstrate many outstanding properties, to date, considerable efforts have mostly been devoted to the incorporation as transparent bottom electrodes to replace indium tin oxide (ITO) for highly efficient OPVs with reflective top electrode. [ 24–29 ] It was found that postprocessing treatments, such as high‐temperature thermal annealing (200 °C for 10–30 min), mechanical pressing, and so on, are usually required to reduce the contact resistance between the nanowires and hence achieve a desired electrical conductivity. Obviously, these treatments limit AgNWs in applications where it is used as the top electrode, especially for the devices that contain heat‐sensitive semiconducting materials, where postprocessing temperature can critically and negatively impact a carefully created and optimized morphology.…”

Section: Introductionmentioning

confidence: 99%

Novel Bimodal Silver Nanowire Network as Top Electrodes for Reproducible and High‐Efficiency Semitransparent Organic Photovoltaics

et al. 2020

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Semitransparent organic photovoltaics (ST-OPVs) provide a potentially facile route for some applications in building integrated photovoltaics. One of the challenges in developing large-scale, printable ST-OPVs is to address the need for highperformance and fully solution-processed top electrodes, allowing the replacement of the evaporated thin metallic films (Ag, Au, and Al). Silver nanowire (AgNW) is considered a promising candidate for the substitution due to its excellent transparency, conductivity, and solution processability. Herein, a novel bimodal AgNW (AgNW-BM) electrode is reported, comprising AgNWs of two different aspect ratios. It is shown that the AgNW-BM film achieves lower sheet resistance and higher visible transmittance than each monodisperse AgNW film, respectively. Furthermore, ST-OPVs based on PTB7-Th:IEICO-4F with AgNW-BM top electrodes are fabricated, which can obtain a maximum power conversion efficiency (PCE) of 7.49% with an average visible transmittance (AVT) of 33%. The ST-devices also demonstrate an enhanced reproducibility and excellent color-rendering index of 90. In addition, the bimodal top electrode is successfully implemented in the PM6:Y6 system with a higher PCE of 9.79% and with an AVT of 23%, demonstrating the universality for various semiconductor systems. Our work provides a simple strategy to realize fully solution-processed, highly efficient ST-OPVs.

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Section: Introductionmentioning

confidence: 99%

Novel Bimodal Silver Nanowire Network as Top Electrodes for Reproducible and High‐Efficiency Semitransparent Organic Photovoltaics

et al. 2020

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“…In 2019, Chen's group successfully synthesized grid‐like FTE using water suspension of Ag NWs and polyelectrolyte PSSNa, which showed high transparency, low surface roughness, and excellent flexibility. [ 19 ] Then, the FTE was employed to fabricate flexible OSCs devices with different donors and acceptors, of which performance could be comparable to the rigid ITO‐based device. The PCE of the devices based on flexible tandem and single junction achieved 16.55% and 13.15%, respectively.…”

Section: Flexible Organic Solar Cellsmentioning

confidence: 99%

Recent Progress in Flexible and Stretchable Organic Solar Cells

Qin

Lan

Chen

et al. 2020

Adv Funct Materials

152

124

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Flexible and stretchable organic solar cells (OSCs) have attracted enormous attention due to their potential applications in wearable and portable devices. To achieve flexibility and stretchability, many efforts have been made with regard to mechanically robust electrodes, interface layers, and photoactive semiconductors. This has greatly improved the performance of the devices. State‐of‐the‐art flexible and stretchable OSCs have achieved a power conversion efficiency of 15.21% (16.55% for tandem flexible devices) and 13%, respectively. Here, the recent progress of flexible and stretchable OSCs in terms of their components and processing methods are summarized and discussed. The future challenges and perspectives for flexible and stretchable OSCs are also presented.

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“…Thus, an optimized PCE of 16.1% was achieved by the PPZA‐based device, which is the highest value reported for single‐junction flexible OSCs (Table S1, Supporting Information). [ 19,28,50–54 ]…”

Section: Figurementioning

confidence: 99%

Biomimetic Electrodes for Flexible Organic Solar Cells with Efficiencies over 16%

Zuo

Chen

et al. 2020

Advanced Optical Materials

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Flexible organic solar cells (OSCs) are very promising for use in portable power supply devices due to the advantages of low‐cost, light‐weight, and flexibility. However, the efficiencies of flexible OSCs are limited by the flexible transparent electrodes owing to their nonoptimal electrical, optical, and mechanical properties. To address these challenges, leaf‐like biomimetic electrodes are proposed to achieve an efficient light capture and glossy surface for a high‐efficiency flexible OSC. To mimic the internal anatomy of the leaf, the conformable electrode stack consists of a flexible polyimide substrate, light‐scattering polystyrene spheres, zinc oxide protecting layer, and electrically conductive silver nanowires to obtain a high transmittance, low sheet resistance, and low surface roughness. A record‐high power conversion efficiency of 16.1% is realized by a flexible OSC with the biomimetic electrode design, comparable to those rigid devices on glass. Moreover, the flexible OSC on this biomimetic electrode exhibits a robust bendability against flexural strain, retaining 85% of the initial efficiency after 5000 bending cycles at a radius of curvature as small as 1.0 mm.

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Flexible organic photovoltaics based on water-processed silver nanowire electrodes

Cited by 289 publications

References 48 publications

Novel Bimodal Silver Nanowire Network as Top Electrodes for Reproducible and High‐Efficiency Semitransparent Organic Photovoltaics

Novel Bimodal Silver Nanowire Network as Top Electrodes for Reproducible and High‐Efficiency Semitransparent Organic Photovoltaics

Recent Progress in Flexible and Stretchable Organic Solar Cells

Biomimetic Electrodes for Flexible Organic Solar Cells with Efficiencies over 16%

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