On the contribution of fullerene to the current of planar heterojunction organic solar cells

Cattin, Linda; Cherif, Mohamed Ahmed; Jouad, Zouhair El; Ftouhi, Hajar; El-Menyawy, E.M.; Mahlali, A. El; Touihri, S.; Arzel, Ludovic; Addou, M.; Torchio, Philippe; Bérnède, J.C.

doi:10.1088/1361-6463/ab7c98

Cited by 5 publications

(3 citation statements)

References 26 publications

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“…Suitable carrier transporting materials feature high μ and the ability to form favorable energy alignment and trap-free interfaces with their adjacent layers. For example, spiro-OMeTAD, spiro-TTB, PEDOT:PSS, NiO x , and PTAA are commonly used HTL materials; TiO 2 , PCBM, C60, ZnO nanoparticles, PFN-Br, and TPBi are often used as ETL materials. However, metal oxide, nanoparticle, and small-organic-molecule thin films lack suitable mechanical stretchability for wearable applications.…”

Section: Discussionmentioning

confidence: 99%

Heterostructure Engineering of Solution-Processable Semiconductors for Wearable Optoelectronics

Kim

Seong

Gong

2023

ACS Appl. Electron. Mater.

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Wearable and implantable optoelectronics, including light-emitting diodes (LEDs), photovoltaics (PVs), and photodetectors (PDs), have recently gained great interest for their potential applications in wearable technology, the Internet of things (IoT), and personalized healthcare. The development of optoelectronics with superior mechanical deformability (i.e., stretchability) is highly desired, as such devices can be worn seamlessly on the body, enabling noninvasive, continuous, and accurate real-time health monitoring using light. However, conventional optoelectronics build on inorganic semiconductors with high rigidity and brittleness. The lack of mechanical deformability impedes the reliable acquisition of biosignals during the motion of the human body, hindering the biomedical application of optoelectronics. Innovative design for intrinsically stretchable optoelectronics is thus urgently needed. This Spotlight identifies strategies and advances in intrinsically stretchable optoelectronics. We focus on heterostructure engineering, which can effectively impart softness in solution-processable optoelectronic semiconductors, including organic semiconductors (OSCs), colloidal quantum dots (CQDs), and metal halide perovskites (MHPs). Lastly, we propose a roadmap for future stretchable optoelectronics research toward its practical application in healthcare, renewable energy, soft robotics, and beyond.

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Section: Discussionmentioning

confidence: 99%

Heterostructure Engineering of Solution-Processable Semiconductors for Wearable Optoelectronics

Kim

Seong

Gong

2023

ACS Appl. Electron. Mater.

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“…SubPc is known for its high absorption coefficient and C 60 for its high efficiency as an electron acceptor [27]. The thickness of these layers in inverted OPVs was earlier optimized: 40 nm for C 60 and 16 nm for SubPc [28]. The buffer layer inserted between the cathode and the electron acceptor, which is called the exciton blocking layer (EBL) in the case of PHJ-OPVs [29], is a thin layer (9 nm) of Alq 3 .…”

Section: Methodsmentioning

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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“…After selecting the type of material, the theoretical optimization of this structure involves determining the thickness of these three layers. Hence, re ection and transmission can be calculated such as the Transfer Matrix Method (TMM) [11][12][13]. Moreover, the refractive index of the layers is typically assumed to be constant, but the dispersion of the refractive index can also be considered in this method.…”

Section: Introductionmentioning

confidence: 99%

Nano-viewpoint in Modeling and Investigation of the D/M/D Transparent-Conductive Layer

Haidari

2021

Plasmonics

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A transparent-conductive lm (TCF) is widely used in various electro-optical devices. The dielectric/metal/dielectric(D/M/D) as one type of TCF has been highly considered due to more advantages, such as the possibility of selecting different materials and engineering other properties. For pre-fabrication design, it is often modeled with a 1D photonic crystal. This model needs to be improved due to the low thickness of the metal layer. This thin metallic layer leads to a nanostructure instead of a uniform layer. In this study, after proper nanostructure modeling, the 3D-FDTD method was used to simulate different optical properties of the structure. The rst aspect of the importance of the nanostructured model is to address the serious plasmonic resonant losses. They are associated with the complicated metallic form in D/M/D that is not considered in conventional modeling. The simulation results showed that for Ag, plasmonic loss peaks show a wide distribution over the visible. About Al, these peaks show a more signi cant distribution at the beginning of the visible spectrum. In both, plasmonic loss behavior tends to red-shift. About optical transition, Al does not offer a notable advantage over Ag. Due to the intense excitation of plasmonic losses when the metal layer has pores, a layer of entirely connected nanoparticles with the least possible thickness can have the desired properties. The increased rough surface of the dielectric layer due to the nanostructured metallic layer was also modeled.

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On the contribution of fullerene to the current of planar heterojunction organic solar cells

Cited by 5 publications

References 26 publications

Heterostructure Engineering of Solution-Processable Semiconductors for Wearable Optoelectronics

Heterostructure Engineering of Solution-Processable Semiconductors for Wearable Optoelectronics

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

Nano-viewpoint in Modeling and Investigation of the D/M/D Transparent-Conductive Layer

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