A5021513672- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Advancements in Battery Materials
- Advanced Memory and Neural Computing
- Advanced Sensor and Energy Harvesting Materials
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Ferroelectric and Negative Capacitance Devices
- Analytical Chemistry and Sensors
- Advanced battery technologies research
- Semiconductor materials and devices
Linköping University
2025
Indian Institute of Science Bangalore
2020-2023
Abstract Complementary circuits based on organic electrochemical transistors (OECTs) are attractive for the development of inexpensive and disposable point‐of‐care bioelectronic devices. Ambipolar OECTs, which employ a single channel material, could decrease fabrication complexity manufacturing costs such circuits. An ideal material ambipolar OECTs should be electrochemically stable in aqueous environments, afford facile ion insertion both cations anions, also facilitate high balanced...
High-capacity stretchable batteries are crucial for next-generation wearables to enable long-term operation and mechanical conformability with the human user. In existing battery designs, increasing active material yield higher capacity often leads thicker stiffer solid electrodes poor properties. Here, we present a concept that transfers physical property of electrode from conventional into fluid state. The electrochemical properties rely on viscosity fluids rather than Young’s modulus...
Redox-active conjugated polymers are an emerging class of organic charge storage materials for lithium-ion batteries. The electron conducting backbone linking the localized redox moieties enables fast transfer kinetics. Polymers with that have kinetics and high potentials respect to Li+/Li while being stable under electrochemical environments ideal energy applications. In this work, we propose diketopyrrolopyrrole (DPP) as a suitable moiety realizing redox-active polymer-based Li-ion...
Electrochemical doping is central to a host of important applications such as bio-sensing, neuromorphic computing and charge storage. However, the mechanisms that enable electrochemical dopability various parameters control efficiencies are poorly understood. Here, employing complementary spectroelectrochemical measurements, we report charge-polarity dependent ion insertion asymmetry in diketopyrrolopyrrole-based ambipolar π-conjugated polymer. We argue electrostatic interactions...
Organic materials are a sustainable alternative to replace inorganic transition metal-based cathodes in rechargeable intercalation batteries. Among the possible redox active organic materials, conjugated polymers with multiple sites per repeat unit expected afford high energy and power densities while being resistant dissolution when contact battery electrolytes. However, accessing full capacity of polymeric electrodes ensuring electrochemical reversibility has been challenging. Using...
We describe the emergence of photocapacitance in two-dimensional layered nanocrystal assemblies. Devices are electrically probed by application a lateral bias across interdigitated electrodes. observe capacitive current–voltage characteristics that individually absent nanocrystals. Besides occurrence large zero-bias capacitance, assemblies further show transient negative behavior where small signal capacitance is found to attain values over ±100 nF range. this system behaves as damped...
Organic electrochemical transistors (OECTs) find applications in biosensing and bioelectronics. Availability of p- n-type OECT materials with balanced performance is key to the development OECT-based circuits for performing multiplexing signal processing functions bioelectronic devices. However, lags behind best p-type by several orders magnitude there a clear need new materials. Here, we report diketopyrrolopyrrole (DPP) based polymer as potential candidate material OECTs. We fabricated...