2-D self-healable polyaniline-polypyrrole nanoflakes based triboelectric nanogenerator for self-powered solar light photo detector with DFT study

• Published in: Journal of colloid and interface science Vol. 600; pp. 572 - 585
• Main Authors: Singh, Shakti, Tripathi, Ravi Kant, Gupta, Manoj Kumar, Dzhardimalieva, Gulzhian I., Uflyand, Igor E., Yadav, BalChandra
• Format: Journal Article
• Language: English
• Published: Elsevier Inc 15-10-2021
• Subjects: Nanoflakes; Self-healing; Self-powered photo sensor; Triboelectric nanogenerator; Triboelectric nanogenerator; Self-healing; Nanoflakes; Self-powered photo sensor
• ISSN: 0021-9797; 1095-7103
• DOI: 10.1016/j.jcis.2021.05.052

Self-healable and self-powered visible light photo sensor.
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•Synthesis of novel 2-D nanoflakes (~30 nm) of Polyaniline-Polypyrrole based conducting polymer.•Acetone-assisted self-healing was observed in a polymeric thin film.•Triboelectric nanogenerator (TENG) based on PANI-PPY nanoflakes (NFs) was fabricated.•The input source in solar light photodetector with the maximum output voltage of ~149 volts was used.•Ultra-fast response and recovery time (0.41 sec and 0.45 sec) were recorded respectively.•The theoretical analysis was carried out using Gaussian 09 and Gauss view 05 software.
This work demonstrates an easy and cost-effective synthesis of PANI-PPY conducting nanoflakes (NFs) with a self-healing capability. Scanning electron microscopic (SEM) analysis shows the minimum width of NFs as 30 nm, while HRTEM analysis confirms the shape, size, and semi-crystalline nature of the polymer. These PANI-PPY NFs were used to fabricate a contact separation mode triboelectric nanogenerator (TENG) based self-powered photosensor which gave the maximum output voltage (149 V), maximum output current (16 µA), current density 0.56 µAcm−2, and power density 83.56 µWcm−2. Detailed literature survey shows the comparative study of PANI-PPY NF’s with other photo-sensing materials. This literature review highlights the tremendous ability of PANI-PPY to self-restore and ultra-fast self-powering nature. This work also demonstrates a very easy and cost-effective method to develop polymeric nanomaterials via temperature-assisted polymerization, which need only a stirrer with a hot plate. Theoretical analysis (DFT calculations using Gaussian 09 and Gauss view 05) shows a consistent increase in stability when the number of molecules in the polymer chains analyzed was increased. The developed self-healing triboelectric nanogenerators exhibited stable performance before and after healing.