Influence of anode roughness and buffer layer nature on organic solar cells performance

Dahou, Fatima Zohra; Cattin, Linda; Garnier, Jérôme; Ouerfelli, J.; Morsli, M.; Louarn, G.; Bouteville, A.; Khellil, A.; Bérnède, J.C.

doi:10.1016/j.tsf.2010.06.009

Cited by 40 publications

(28 citation statements)

References 36 publications

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“…20,21 However, the effect of light trapping has not been attracted any attention. Herein, our research points out that the textured electrodes are able to enhanced the light absorption and improved the device J sc although the special morphology of the textured electrode may need to be tailored in order to prevent the shorts between the anode and cathode.…”

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confidence: 99%

Efficient polymer solar cells based on light-trapping transparent electrodes

Zhang

Zhao

2012

Applied Physics Letters

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Highly efficient and cost-effective polymer solar cells (PSCs) fabricated on textured fluorine doped transparent conductive (FTO) electrodes are achieved. Such electrodes with rough surface in combination with reflective back contacts provide efficient light-trapping by light scattering and multiple reflections to increase the path length of the light. Due to the increased light absorption in active layer, the resultant PSCs base on polymer:fullerene system show 10% and 8% improvement in short current density and efficiency, respectively, compared with the reference cell based on the flat electrodes.

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confidence: 99%

Efficient polymer solar cells based on light-trapping transparent electrodes

Zhang

Zhao

2012

Applied Physics Letters

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“…The roughness of the cathode buffer layer (CBL) is very important for the performance of the OSC. The light transmission through the layer is decreased and the efficiency of the OSC decreases with the increase in roughness [24] [25]. The roughness of the LaF 3 layer was studied with AFM.…”

Section: Resultsmentioning

confidence: 99%

Investigation on Lanthanum Fluoride as a Novel Cathode Buffer Material Layer for the Enhancement of Stability and Performance of Organic Solar Cell

Islam¹,

Saklayen²,

Rahman³

et al. 2014

OPJ

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This article presents the investigation on very thin Lanthanum Fluoride (LaF 3 ) layer as a new cathode buffer layer (CBL) for organic solar cell (OSC). OSCs were fabricated with poly(3-hexylthiophene) (P3HT) and phenyl-C61-butyric acid methyl ester (PCBM) polymer blend at 1:1 ratio. Electron-beam evaporation at room temperature was used to deposit 3 and 5 nm thick LaF 3 layer. A very smooth surface of LaF 3 with an average roughness of 0.2 nm has been observed by the Atomic Force Microscope (AFM) that is expected to prevent diffusion of cathode metal ion through it and thereby enhance the lifetime and stability of OSC. Huge enhancement of J SC and V OC was also observed for 3 nm-thick LaF 3 CBL. Several excellent features of the LaF 3 layer such as, transporting electron through tunneling, blocking of holes to the cathode, minimizing recombination, protecting the photoactive polymer from ambient oxygen, and reducing degradation/oxidation of any low work function layer at the cathode interface, might have contributed to the performance enhancement of OSC. The experimental findings indicate the promise of LaF 3 to be an excellent CBL material for OSC.

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“…By the technique of spin coating a polymer solution of 10 mg/mL was used. 50 uL of solution is deposited on the substrate is very important in these devices, because this layer produces good work function adjustment, surface defects passivation, and ITO surface smoothing [27]. The devices were measured under conditions of darkness and light (AM 1.5 solar simulator of 100 mW/cm 2 ) through the ITO glass.…”

Section: Organic Solar Cell Constructionmentioning

confidence: 99%

Alkyl Thiophene Vinylene Electropolimerization in C<sub>8</sub>mimPF<sub>6</sub>, Potential Use in Solar Cells

Rojas¹,

Martínez²,

Bernède³

et al. 2017

MSA

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We report the electrosynthesis of a novel semiconductor polymer based on alkyl vinylthiophene derivative in the presence of an ionic liquid (IL). The polymerization was performed under galvanostatic conditions and the polymer was studied as potential donor component of a multilayer heterojunction organic solar cell (OSC). The monomer used was (E)-1,2-di-(3-octyl-2-thienyl) vinylene (OTV) and the IL used for the electropolymerization was 1-octyl-3-methylimidazole hexafluorophosphate C 8 mimPF 6 . Optical properties, stability and morphology of the polymer were analyzed using FT-IR, UV-vis, Raman and XPS spectroscopy. Voltammetry analysis and scanning electron microscopy (SEM-EDX) were also performed on the polymer. The OSC assembled with the polymer of OTV was used as electro donor and C 60 as acceptor. Molybdenum trioxide (MoO 3 ) and bathocuproine (BCP) were used as buffer layer between anode and cathode respectively. I-V curves, in the dark and under AM 1.5 solar simulator were performed to measure its efficiency.

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Influence of anode roughness and buffer layer nature on organic solar cells performance

Cited by 40 publications

References 36 publications

Efficient polymer solar cells based on light-trapping transparent electrodes

Efficient polymer solar cells based on light-trapping transparent electrodes

Investigation on Lanthanum Fluoride as a Novel Cathode Buffer Material Layer for the Enhancement of Stability and Performance of Organic Solar Cell

Alkyl Thiophene Vinylene Electropolimerization in C<sub>8</sub>mimPF<sub>6</sub>, Potential Use in Solar Cells

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Influence of anode roughness and buffer layer nature on organic solar cells performance

Cited by 40 publications

References 36 publications

Efficient polymer solar cells based on light-trapping transparent electrodes

Efficient polymer solar cells based on light-trapping transparent electrodes

Investigation on Lanthanum Fluoride as a Novel Cathode Buffer Material Layer for the Enhancement of Stability and Performance of Organic Solar Cell

Alkyl Thiophene Vinylene Electropolimerization in C&lt;sub&gt;8&lt;/sub&gt;mimPF&lt;sub&gt;6&lt;/sub&gt;, Potential Use in Solar Cells

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Alkyl Thiophene Vinylene Electropolimerization in C<sub>8</sub>mimPF<sub>6</sub>, Potential Use in Solar Cells