Diverse applications of MoO<sub>3</sub>for high performance organic photovoltaics: fundamentals, processes and optimization strategies

Gong, Yongshuai; Dong, Yiman; Zhao, Biao; Yu, Runnan; Hu, Siqian; Tan, Zhan’ao

doi:10.1039/c9ta12005j

Cited by 84 publications

(51 citation statements)

References 259 publications

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“…Although MoO 3 has been widely utilized as a HTL in OPVs, its deposited layer thickness should be precisely controlled at 15 nm or less by thermal evaporation because of low conductivity of MoO 3 which implicates that MoO 3 is unfavorable to large-scale manufacturing. [165] Interestingly, graphene oxide and TMDs are becoming attractive materials that can be incorporated into OPV devices due to their two-dimensional structures, solution processability, and tunable work function (Figure 10c), which can enhance charge transport property in solar cells. [166][167][168][169] Recently, Anthopoulos and coworkers reported a high PCE of 17% based on PBDB-TF:Y6: PC 71 BM ternary bulk-heterojunction with liquid exfoliated WS 2 as the HTL (Figure 10d).…”

Section: Other Failure Modes Of Large-area Opv Modulesmentioning

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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Section: Other Failure Modes Of Large-area Opv Modulesmentioning

confidence: 99%

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

et al. 2020

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“…The effect of MoO 3 molecular doping to PEDOT:PSS on the chemical structure and PCE of Si/PEDOT:PSS HSCs had been clarified. [36][37][38][39] Poly (…”

Section: Doi: 101002/admi202000754mentioning

confidence: 99%

“…The effect of MoO 3 molecular doping to PEDOT:PSS on the chemical structure and PCE of Si/PEDOT:PSS HSCs had been clarified. [ 36–39 ] However, a high‐temperature step is needed for the preparation of the MoO 3 layer, and the morphology of the metal oxide layer strongly affects the photovoltaic performance of the devices. Usually, the MoO x was introduced as an independent layer into devices which prepared via a vapor thermal deposition process, and the MoO x mixed PEDOT:PSS film as hole injection layer in Si/PEDOT:PSS HSCs devices is rare.…”

Section: Introductionmentioning

confidence: 99%

Planar Organic‐Si Hybrid Solar Cell with MoO_x Mixed PEDOT:PSS as Hole Injection Layer Profits from Mo⁵⁺ and Mo⁶⁺ Synergistic Effects

Fang

Wang

et al. 2020

Adv Materials Inter

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Poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) hole injection layer plays an important role in planar Si/PEDOT:PSS heterojunction solar cells (HSCs). Herein, a MoOx mixed aqueous PEDOT:PSS cosolvent is developed and is applied into a Si/PEDOT:PSS solar cell preparation via a time‐saving one‐step spin‐coating method. With an optimal concentration of MoOx dopants, the power conversion efficiency of the device exhibits from 10.26% up to 13.82% with all inherent photovoltaic parameters enhanced. The detailed characterization and analytical results indicate that an advanced electronic property is produced by MoOx dopants and interface optimization caused by synergistic effects from Mo5+ and Mo6+ species with PEDOT:PSS, which enhances its interface work function and promotes hole transportation capacity. The result paves a path for exploring efficient Si/PEDOT:PSS HSCs with suitable functional material and a simple solution‐processable method.

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“…Thus, to obtain the transmission of the visible light, it is necessary to sandwich the M layer between two high refractive index dielectrics. MoO 3 is one of the possible dielectrics; it is well known that it is very efficient as a hole-transporting layer (HTL) at the anode/electron donor interface [21,22]. Therefore, in the present work, MoO 3 was chosen as the dielectric.…”

Section: Introductionmentioning

confidence: 99%

Semi-Transparent Organic Photovoltaic Cells with Dielectric/Metal/Dielectric Top Electrode: Influence of the Metal on Their Performances

et al. 2021

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In order to grow semi-transparent organic photovoltaic cells (OPVs), multilayer dielectric/metal/dielectric (D/M/D) structures are used as a transparent top electrode in inverted OPVs. Two different electrodes are probed, MoO3/Ag/MoO3 and MoO3/Ag/Cu:Ag/ZnS. Both of them exhibit high transmission in visible and small sheet resistance. Semi-transparent inverted OPVs using these electrodes as the top anode are probed. The active organic layers consist in the SubPc/C60 couple. The dependence of the OPV performances on the top electrode was investigated. The results show that far better results are achieved when the top anode MoO3/Ag/MoO3 is used. The OPV efficiency obtained was only 20% smaller in comparison with the opaque OPV, but with a transparency of nearly 50% in a broad range of the visible light (400–600 nm). In the case of MoO3/Ag/Cu:Ag/ZnS top anode, the small efficiency obtained is due to the presence of some Cu diffusion in the MoO3 layer, which degrades the contact anode/organic material.

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Diverse applications of MoO₃for high performance organic photovoltaics: fundamentals, processes and optimization strategies

Abstract: This review summarizes the fundamentals, solution processing methods, optimization strategies and various applications of MoO3 in OPVs.

Cited by 84 publications

References 259 publications

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

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

Planar Organic‐Si Hybrid Solar Cell with MoO_x Mixed PEDOT:PSS as Hole Injection Layer Profits from Mo⁵⁺ and Mo⁶⁺ Synergistic Effects

Semi-Transparent Organic Photovoltaic Cells with Dielectric/Metal/Dielectric Top Electrode: Influence of the Metal on Their Performances

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Diverse applications of MoO3for high performance organic photovoltaics: fundamentals, processes and optimization strategies

Abstract: This review summarizes the fundamentals, solution processing methods, optimization strategies and various applications of MoO3 in OPVs.

Cited by 84 publications

References 259 publications

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

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

Planar Organic‐Si Hybrid Solar Cell with MoOx Mixed PEDOT:PSS as Hole Injection Layer Profits from Mo5+ and Mo6+ Synergistic Effects

Semi-Transparent Organic Photovoltaic Cells with Dielectric/Metal/Dielectric Top Electrode: Influence of the Metal on Their Performances

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Product

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Diverse applications of MoO₃for high performance organic photovoltaics: fundamentals, processes and optimization strategies

Planar Organic‐Si Hybrid Solar Cell with MoO_x Mixed PEDOT:PSS as Hole Injection Layer Profits from Mo⁵⁺ and Mo⁶⁺ Synergistic Effects