Improved device performance stability of bulk-heterojunction hybrid solar cells with low molecular weight PCPDPTB

Madsuha, Alfian Ferdiansyah; Krueger, Michael

doi:10.1016/j.synthmet.2017.05.018

Cited by 8 publications

(2 citation statements)

References 65 publications

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“…PCPDTBT is a prototype conjugated polymer characterized by a low energy gap and a high charge generation efficiency. [28] Due to its distinct optoelectronic properties, it has been widely employed for the realization of organic photovoltaic cells, [29][30][31] but, to the best of our knowledge, it was only rarely considered for bioelectronics applications. [14,16,[32][33][34][35][36] Figure S1A (Supporting Information) shows the PCPDTBT optical absorption spectrum and its chemical structure.…”

Section: Preparation and Characterization Of The Hybrid Hpsc-cms/poly...mentioning

confidence: 99%

Nongenetic Optical Modulation of Pluripotent Stem Cells Derived Cardiomyocytes Function in the Red Spectral Range

Ronchi,

Galli,

Tullii

et al. 2023

Advanced Science

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Optical stimulation in the red/near infrared range recently gained increasing interest, as a not‐invasive tool to control cardiac cell activity and repair in disease conditions. Translation of this approach to therapy is hampered by scarce efficacy and selectivity. The use of smart biocompatible materials, capable to act as local, NIR‐sensitive interfaces with cardiac cells, may represent a valuable solution, capable to overcome these limitations. In this work, a far red‐responsive conjugated polymer, namely poly[2,1,3‐benzothiadiazole‐4,7‐diyl[4,4‐bis(2‐ethylhexyl)−4H‐cyclopenta[2,1‐b:3,4‐b’]dithiophene‐2,6‐diyl]] (PCPDTBT) is proposed for the realization of photoactive interfaces with cardiomyocytes derived from pluripotent stem cells (hPSC‐CMs). Optical excitation of the polymer turns into effective ionic and electrical modulation of hPSC‐CMs, in particular by fastening Ca2+ dynamics, inducing action potential shortening, accelerating the spontaneous beating frequency. The involvement in the phototransduction pathway of Sarco‐Endoplasmic Reticulum Calcium ATPase (SERCA) and Na+/Ca2+ exchanger (NCX) is proven by pharmacological assays and is correlated with physical/chemical processes occurring at the polymer surface upon photoexcitation. Very interestingly, an antiarrhythmogenic effect, unequivocally triggered by polymer photoexcitation, is also observed. Overall, red‐light excitation of conjugated polymers may represent an unprecedented opportunity for fine control of hPSC‐CMs functionality and can be considered as a perspective, noninvasive approach to treat arrhythmias.

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Section: Preparation and Characterization Of The Hybrid Hpsc-cms/poly...mentioning

confidence: 99%

Nongenetic Optical Modulation of Pluripotent Stem Cells Derived Cardiomyocytes Function in the Red Spectral Range

Ronchi,

Galli,

Tullii

et al. 2023

Advanced Science

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“…) (PCPDTBT) have been exploited to demonstrate enhancement in PCEs [21,22]. Polyfluorene-based polymers are an important class of conjugated semiconductors [23] that have potential for high-performance photovoltaic applications [24,25].…”

Section: Introductionmentioning

confidence: 99%

Thickness Optimization and Photovoltaic Properties of Bulk Heterojunction Solar Cells Based on PFB–PCBM Layer

et al. 2020

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We report on the fabrication and study of bulk heterojunction (BHJ) solar cells based on a novel combination of a donor–acceptor poly(9,9-dioctylfluorenyl-2,7-diyl)-co-(N,N0-diphenyl)-N,N′di(p-butyl-oxy-pheyl)-1,4-diamino-benzene) (PFB) and [6, 6]-phenyl-C61-butyric acid methyl ester (PCBM) blend composed of 1:1 by volume. indium tin oxide (ITO)/poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate (PEDOT:PSS)/PFB–PCBM/Ag BHJ solar cells are fabricated by a facile cost-effective spin-coating technique. The thickness of the active film (PFB–PCBM) plays an important role in the efficiency of light absorption, exciton creation, and dissociation into free charges that results in higher power conversion efficiency (PCE). In order to optimize the PCE as a function of active layer thickness, a number of solar cells are fabricated with different thicknesses of PFB–PCBM films at 120, 140, 160, 180, and 200 nm, and their photovoltaic characteristics are investigated. It is observed that the device with a 180 nm thick film demonstrates a maximum PCE of 2.9% with a fill factor (FF) of 53% under standard testing conditions (STC) (25 °C, 1.5 AM global, and 100 mW/cm2). The current–voltage (I-V) properties of the ITO/PEDOT:PSS/PFB–PCBM/Ag BHJ devices are also measured in dark conditions to measure and understand different parameters of the heterojunction. Atomic force microscopy (AFM) and ultraviolet-visible (UV-vis) absorption spectroscopy for the PFB–PCBM film of optimal thickness (180 nm) are carried out to understand the effect of surface morphology on the PCE and bandgap of the blend, respectively. The AFM micrographs show a slightly non-uniform and rough surface with an average surface roughness (Ra) of 29.2 nm. The UV-vis measurements of the PFB–PCBM blend exhibit a reduced optical bandgap of ≈2.34 eV as compared to that of pristine PFB (2.88 eV), which results in an improved absorption of light and excitons generation. The obtained results for the ITO/PEDOT:PSS/PFB–PCBM (180 nm)/Ag BHJ device are compared with the ones previously reported for the P3HT–PCBM blend with the same film thickness. It is observed that the PFB–PCBM-based BHJ device has shown two times higher open circuit voltage (Voc) and, hence, enhanced the efficiency.

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Introduction of PCPDTBT in P3HT:Spiro-OMeTAD blending system for solid-state hybrid solar cells with dendritic TiO2/Sb2S3 nanorods composite film

Wei

Feng

et al. 2019

Journal of Solid State Chemistry

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Improved device performance stability of bulk-heterojunction hybrid solar cells with low molecular weight PCPDPTB

Cited by 8 publications

References 65 publications

Nongenetic Optical Modulation of Pluripotent Stem Cells Derived Cardiomyocytes Function in the Red Spectral Range

Nongenetic Optical Modulation of Pluripotent Stem Cells Derived Cardiomyocytes Function in the Red Spectral Range

Thickness Optimization and Photovoltaic Properties of Bulk Heterojunction Solar Cells Based on PFB–PCBM Layer

Introduction of PCPDTBT in P3HT:Spiro-OMeTAD blending system for solid-state hybrid solar cells with dendritic TiO2/Sb2S3 nanorods composite film

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