Metal oxide-free flexible organic solar cells with 0.1 M perchloric acid sprayed polymeric anodes

Wan, Juanyong; Fan, Xi; Huang, Huihui; Wang, Jinzhao; Zhang, Zhiguo; Fang, Junfeng; Yan, Feng

doi:10.1039/d0ta07934k

Cited by 41 publications

(33 citation statements)

References 39 publications

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“…Additionally, using acid treatment 44 , 64 – 67 such as sulfuric acid increases the conductivity and adherence of the film on the surface substrate, but this process is not suitable for PET substrates (a very strong pH can destroy the plastic substrate) and printing processes. Recently, many studies have been carried out to solve this problem, including treatment using novel doping with a small amount of (0.1 M) HClO 4 diluted in an aqueous solution 45 . This treatment process allowed us to obtain the best electrical and optical properties for these electrodes (30 Ω/sq with a transmittance of 94% at 550 nm).…”

Section: Resultsmentioning

confidence: 99%

“…This doping led to a pronounced improvement in PEDOT:PSS conductivity, which exceeded 200 S cm -1 . This enhancement of conductivity was attributed to the conformational changes of the PEDOT chains and loss of PSSH from the PSS by acid assistance 45 . Herein, a PEDOT-SWNTs film doped with (0.1 M) of HClO 4 is applied as an electrode for electron collection on a PET substrate for the first time.…”

Section: Introductionmentioning

confidence: 99%

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Digital printing of a novel electrode for stable flexible organic solar cells with a power conversion efficiency of 8.5%

Wageh

Raïssi

Berthelot

et al. 2021

Sci Rep

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Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) mixed with single-wall nanotubes (SWNTs) (10:1) and doped with (0.1 M) perchloric acid (HClO4) in a solution-processed film, working as an excellent thin transparent conducting film (TCF) in organic solar cells, was investigated. This new electrode structure can be an outstanding substitute for conventional indium tin oxide (ITO) for applications in flexible solar cells due to the potential of attaining high transparency with enhanced conductivity, good flexibility, and good durability via a low-cost process over a large area. In addition, solution-processed vanadium oxide (VOx) doped with a small amount of PEDOT-PSS(PH1000) can be applied as a hole transport layer (HTL) for achieving high efficiency and stability. From these viewpoints, we investigate the benefit of using printed SWNTs-PEDOT-PSS doped with HClO4 as a transparent conducting electrode in a flexible organic solar cell. Additionally, we applied a VOx-PEDOT-PSS thin film as a hole transporting layer and a blend of PTB7 (polythieno[3,4-b] thiophene/benzodithiophene): PC71BM (phenyl-C71-butyric acid methyl ester) as an active layer in devices. Zinc oxide (ZnO) nanoparticles were applied as an electron transport layer and Ag was used as the top electrode. The proposed solar cell structure showed an enhancement in short-circuit current, power conversion efficiency, and stability relative to a conventional cell based on ITO. This result suggests a great carrier injection throughout the interfacial layer, high conductivity and transparency, as well as firm adherence for the new electrode.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Digital printing of a novel electrode for stable flexible organic solar cells with a power conversion efficiency of 8.5%

Wageh

Raïssi

Berthelot

et al. 2021

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Recently, Fan's group prepared PET/PEDOT:PSS via spray doping with a tiny perchloric acid (HClO 4 ), and obtained a low resistance of ≈29 Ω sq −1 . [ 56 ] Flexible OSCs with PM6:Y6 blend yielded an excellent PCE of 16.71%. The outstanding performance was attributed to the spray doping of HClO 4 , which can pull down the Fermi level of the anode, reduce the sheet resistance, and lead to a close contact on interface.…”

Section: Flexible Oscs Based On Conducting Polymersmentioning

confidence: 99%

“…[ 49 ] Consequently, with the continuous development of efficient photoactive materials, significant progress has been achieved for flexible OSCs in recent years. [ 21,26–28,50–64 ] As shown in Table 1 , the photovoltaic performances of representative flexible OSCs are summarized, and the molecular structures of corresponding materials are shown in Figure .…”

Section: Introductionmentioning

confidence: 99%

Flexible Organic Solar Cells: Progress and Challenges

et al. 2021

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Compared with inorganic photovoltaic technologies, flexibility is the most prominent feature of organic solar cells (OSCs). Flexible OSCs have been considered as one of the most promising directions in the OSC field, and have drawn tremendous attention in recent years. However, the power conversion efficiencies (PCEs) of flexible OSCs still lag behind those of their rigid counterparts. To further improve the performance of flexible OSCs, it is of great necessity for synergistic efforts to optimize flexible transparent electrodes (FTEs), photoactive materials, electrode buffer layers, and device structure engineering. Herein, the recent progress in flexible OSCs from the perspective of FTEs, including indium tin oxides, carbon nanomaterials, conducting polymers, silver nanowires, and ultrathin metal films and metal meshes, is summarized. In addition, the photoactive materials and electrode buffer layers in flexible OSCs are discussed to reveal the effects of material engineering and interface modification. Finally, a discussion of the future outlook and challenges of flexible OSCs is presented.

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“…Over the past several decades, organic solar cells (OSCs) have gained recognition as a potential next‐generation clean energy technology, because they possess versatile traits, such as low cost, lightweight, [ 1,2 ] flexibility, [ 3 ] easy processing, [ 4–7 ] and semitransparency. [ 8–10 ] Semitransparent OSCs (STOSCs) use conductive, high‐transmittance electrodes with variable active layer materials and have characteristics unavailable to other solar technologies, especially for promising applications such as power generating windows and ceilings for more efficiently using solar light and indoor light, agricultural greenhouse in building‐integrated photovoltaics (BIPVs), and wearable electronics.…”

Section: Introductionmentioning

confidence: 99%

Exploiting Ternary Blends to Accurately Control the Coloration of Semitransparent, Non‐Fullerene, Organic Solar Cells

Lee

Heo

et al. 2021

Solar RRL

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Semitransparent organic solar cells (STOSCs) have received increasing attention due to promising applications such as building‐integrated photovoltaics. Successful commercialization requires that STOSCs are aesthetically pleasing as well as having balanced power conversion efficiencies (PCEs) and average visible transmittances (AVTs). Non‐fullerene acceptors, which possess excellent electrical/chemical properties, have helped STOSCs to achieve high PCE and AVT; however, research related to modulating color and appearance of STOSCs has lagged behind. Herein, narrow bandgap donor and acceptor (PTB7‐Th and IEICO‐4F) and ultra‐wide bandgap acceptors (T2‐ORH and T2‐OEHRH) are used to achieve semitransparency and controllable device coloration. Blend films with controllable colors including cyan → blue → purple → reddish purple colors are successfully demonstrated, which are controlled by ratios of IEICO‐4F:T2‐ORH or IEICO‐4F:T2‐OEHRH with PTB7‐Th. By incorporating semitransparent electrodes (comprising Sb2O3/Ag/Sb2O3), STOSCs with PCEs of 6–7% are achieved for cyan, aqua, indigo, and purple and ≈4% PCEs for reddish‐purple colors, with AVTs in the range of 23–35%. Moreover, optical properties of blend films are studied via absorption and transmission measurements, whereas the range of colors achieved is quantified using commission internationale de l'éclairage (CIE) chromaticity and CIE L * a * b* color space then represented as RGB color models.

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Metal oxide-free flexible organic solar cells with 0.1 M perchloric acid sprayed polymeric anodes

Abstract: Future flexible organic solar cells (OSCs) require high efficiency, good flexibility and low fabrication cost. Here, we demonstrate a metal oxide-free flexible OSC based on poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) anodes with a...

Cited by 41 publications

References 39 publications

Digital printing of a novel electrode for stable flexible organic solar cells with a power conversion efficiency of 8.5%

Digital printing of a novel electrode for stable flexible organic solar cells with a power conversion efficiency of 8.5%

Flexible Organic Solar Cells: Progress and Challenges

Exploiting Ternary Blends to Accurately Control the Coloration of Semitransparent, Non‐Fullerene, Organic Solar Cells

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