How varying surface wettability of different PEDOT:PSS formulations and their mixtures affects perovskite crystallization and the efficiency of inverted perovskite solar cells

Yazar

ECS J. Solid State Sci. Technol.

et al. 2023

Electrochemical determination of paracetamol (PC) using an electrode prepared by a one step electropolymerization of the new coumarin-based Schiff base-doped PEDOT conductive polymer on a highly oriented pyrolytic graphite (HOPG) substrate is reported. The electrodes were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, and X-ray diffraction analysis. The possible interference effects of ascorbic acid, uric acid, dopamine, glucose, and caffeine were investigated by chronoamperometry in the presence of paracetamol. The sensor (PEDOT-MC1/HOPG-10 Scan) has a high sensitivity to paracetamol, with a limit of detection (LOD) of 0.312 µM and a RSD % of 1.22 (S/N = 3). In addition, real sample analyzes were performed on pharmaceutical samples for PC determination using the prepared sensor (PEDOT-MC1/HOPG-10 Scan).

“…The amorphous diffraction at 2θ = 25.8°corresponds to the chains of PEDOT. 50 The most intense peak at 2θ = 25.8°belongs to the PEDOT-MC1/HOPG electrode in Fig. 5b.…”

Section: Resultsmentioning

confidence: 91%

Preparation of Electrochemical Sensor for Paracetamol Detection Based on a New Piperazine Substituted Triazole-Coumarin Hybrid Doped PEDOT Modified Flexible HOPG Electrode

Yazar

ECS J. Solid State Sci. Technol.

et al. 2023

“…This was confirmed by the decrease in the absorbance at 224 nm (Figure 4a) because a 39% reduction in absorbance corresponds to PEDOT:PSS = 1:1.5; this was based on an initial ratio of Clevios PH1000 PEDOT:PSS = 1:2.5. [55,56] The subsequent water-soaking process removed the aggregated PSS from the film surface and had minimal impact on the bulk, as indicated by the minor changes in the UV-vis spectra. Throughout the process, removing excess PSS from the film bulk enhanced the resistance of the film to water.…”

Section: Resultsmentioning

confidence: 99%

Dip Coating of Water‐Resistant PEDOT:PSS Films Based on Physical Crosslinking

Yamamoto,

Miyako,

Maeda

et al. 2023

Macro Materials & Eng

Water‐resistant poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) films are valuable in biomedical applications; however, they typically require crosslinkers to stabilize the films, which can introduce undesired aggregation or phase separation reactions. Herein, a dipping‐based process to prepare PEDOT:PSS films on nonplanar surfaces without crosslinker is developed. Sequential soaking of a dip‐coated PEDOT:PSS film in ethanol and water imparts water resistance to the film. Microscopic and spectroscopic techniques are used to monitor the process and confirm that the ethanol soaking elutes the excess PSS from the film bulk, which stabilizes the film prior to the water‐soaking process. The obtained films act as conductors and semiconductors on curved surfaces, including 3D‐printed objects. A film deposited on a curved surface is successfully applied as the channel layer in a neuromorphic organic electrochemical transistor. This approach can enable integrated bioelectronic and neuromorphic applications that can be readily deployed for facile prototyping.

“…Even though many achievements have been recorded, practical application of these materials is still not well established due to the cost-effectiveness of the processing method, and optimizations need to be investigated. The variable wettability of different HTLs affects the morphology, contact angle, and stability [222]. The rough surfaces and surfaces with pinholes act as defects that trap charge carriers, thereby reducing the PCE.…”

Section: Discussionmentioning

confidence: 99%

Advances in Hole Transport Materials for Layered Casting Solar Cells

Bui,

Nguyen

2023

Polymers

Huge energy consumption and running out of fossil fuels has led to the advancement of renewable sources of power, including solar, wind, and tide. Among them, solar cells have been well developed with the significant achievement of silicon solar panels, which are popularly used as windows, rooftops, public lights, etc. In order to advance the application of solar cells, a flexible type is highly required, such as layered casting solar cells (LCSCs). Organic solar cells (OSCs), perovskite solar cells (PSCs), or dye-sensitive solar cells (DSSCs) are promising LCSCs for broadening the application of solar energy to many types of surfaces. LCSCs would be cost-effective, enable large-scale production, are highly efficient, and stable. Each layer of an LCSC is important for building the complete structure of a solar cell. Within the cell structure (active material, charge carrier transport layer, electrodes), hole transport layers (HTLs) play an important role in transporting holes to the anode. Recently, diverse HTLs from inorganic, organic, and organometallic materials have emerged to have a great impact on the stability, lifetime, and performance of OSC, PSC, or DSSC devices. This review summarizes the recent advances in the development of inorganic, organic, and organometallic HTLs for solar cells. Perspectives and challenges for HTL development and improvement are also highlighted.