A5037150241- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Perovskite Materials and Applications
- Organic Light-Emitting Diodes Research
- Thin-Film Transistor Technologies
- Advanced Sensor and Energy Harvesting Materials
- Synthesis and properties of polymers
- Advanced Thermoelectric Materials and Devices
- Chalcogenide Semiconductor Thin Films
- Advanced Memory and Neural Computing
- Quantum Dots Synthesis And Properties
- Liquid Crystal Research Advancements
- Nanofabrication and Lithography Techniques
- Force Microscopy Techniques and Applications
- Silicone and Siloxane Chemistry
- Thermal Radiation and Cooling Technologies
- Catalytic Processes in Materials Science
- Additive Manufacturing and 3D Printing Technologies
- Surface Roughness and Optical Measurements
- Engineering Applied Research
- Semiconductor materials and devices
- Copper Interconnects and Reliability
- Advanced Materials and Mechanics
- Plant Pathogenic Bacteria Studies
- Supramolecular Self-Assembly in Materials
Indian Institute of Technology Bhilai
2024-2025
Nara Institute of Science and Technology
2019-2024
Kyushu Institute of Technology
2016-2019
Materials Science & Engineering
2019
The University of Kitakyushu
2019
Bharat Heavy Electricals (India)
2005-2007
This review summarizes recent advancements in various orientation techniques for conjugated polymers use high performance organic field effect transistors.
Tin–lead (Sn–Pb)-based perovskite solar cells (PSCs) still exhibit inferior power conversion efficiency (PCE) compared to their pure Pb counterparts because of high voltage loss (VL) and photocurrent in the infrared region. This study explores that a small amount cesium ion (Cs+) incorporation lattice Sn–Pb can reduce relative strain, which turn decreases VL less than 0.50 V. Moreover, surface bulk trap densities also seem be reduced by Cs+ addition, as concluded thermally stimulated current...
Unavoidable defects in grain boundaries (GBs) are detrimental and critically influence the organometal halide perovskite performance stability. To address this issue, semiconducting molecules have been employed to passivate traps along GBs. Here, we designed synthesized three squaraine (SQ) with zwitterionic structure interact under-coordinated Pb2+ Pb–I antisite defects. Density functional theory calculation shows symmetric O atoms could coordinate grains simultaneously, resulting...
Abstract Trap states at the interface or in bulk perovskite materials critically influence solar cells performance and long‐term stability. Here, a strategy for efficiently passivating charge traps mitigating interfacial recombination by SnO 2 surface sulfur functionalization is reported, which utilizes xanthate decomposition on low temperature. The results show that functionalized atoms can coordinate with under‐coordinated Pb 2+ ions near interface. After device fabrication under more than...
Nonvolatile organic memristors have emerged as promising candidates for next-generation electronics, emphasizing the need vertical device fabrication to attain a high density. Herein, we present comprehensive investigation of high-performance memristors, fabricated in crossbar architecture with PTB7/Al-AlOx-nanocluster/PTB7 embedded between Al electrodes. PTB7 films were using Unidirectional Floating Film Transfer Method, enabling independent uniform film Layer-by-Layer (LbL) configuration...
Fabrication of large area and uniform thin films with preferred edge-on orientation is highly demanded for flexible organic electronic devices. In this work, utilization a newly designed slider in the floating film transfer method to assist unidirectional spreading led fabrication macroscopically oriented ribbon-shaped (15 cm × 2 cm) having very optical anisotropy (>20). The results pertaining in-plane grazing angle incident X-ray diffraction (GIXD) φ-scan measurements revealed...
Abstract A synergistic approach to enhance charge‐carrier transport in organic semiconductors along with facile solution processing and high performance is crucial for the advancement of electronics. The floating film transfer method (FTM) used as a cost‐effective fabrication large‐scale, uniform, highly oriented poly[2,5‐bis(3‐tetradecylthiophen‐2‐yl)thieno[3,2‐b]thiophene] (pBTTT C‐14) films under ambient conditions. Utilization such active semiconducting layer field‐effect transistors...
Carbon nanotube (CNT) yarns have emerged as a promising candidate for flexible and fabric-type wearable thermoelectric devices. This study developed CNT tailored by low-cost, fast, environmentally friendly dispersion method using glycerol dispersant polyoxyethylene(50) stearyl ether surfactant. A high power factor of 242 μW m–1 K–2 was obtained, which is ca. three times higher than that the previous method. The significant contribution 2-fold increase electrical conductivity (from 325 to 747...
Flexible perovskite solar cells (PSCs) is being reported on different kinds of indium tin oxide (ITO)‐coated flexible substrates such as polyethylene terephthalate (PET) and naphthalate (PEN) with varying sheet resistance. High resistance low transmittance these in comparison to glass‐ITO based rigid substrate are among the major issues achieving high power conversion efficiency (PCE), especially large active area due considerably fill factor (FF) values. With a small cell 0.1 cm 2 , it...
Layer-by-layer fabrication of uniformly oriented thin films over large areas by cost-effective solution-based approaches can open new horizons for the realization high-performance organic circuits in various applications. In this work, a large-area ≈40 cm2 film with uniform orientation is reported poly(3,3‴-dialkylquaterthiophene) (PQT) using unidirectional floating transfer method (UFTM). Orientation characteristics and charge transport anisotropy were analyzed polarized UV–vis spectral...
The role of film morphology conjugated polymers (CPs) and their macromolecular conformation with respect to the substrate in governing charge transport overall device performances has been a matter debate. nature orientation CPs thin films pivotal controlling performance planar sandwich devices. Thin-film characterizations unveiled that spin-coated are isotropic mixed edge-on/face-on conformation, whereas unidirectional floating transfer method (UFTM) anisotropic edge-on-oriented...
Highly oriented thin films of poly[2,5-bis(3-tetradecylthiophen-2-yl)thieno[3,2-b]thiophene] (PBTTT) were prepared by friction-transfer technique followed their characterization using polarized absorption spectroscopy, angle-dependent Raman and X-ray diffraction (XRD) techniques. Orientation in high-molecular-weight (MW) polymers is hampered chain folding or entanglements, which limit macromolecular orientation. Interestingly, utilizing PBTTT (MW > 50 kDa) technique, successful fabrication...
Efficient flexible perovskite solar cells were obtained by compositional engineering. Cylindrically encapsulated devices retained 90% of the device efficiency after 6000 h.
Yttrium incorporation enhanced the performance of CsPbI<sub>2</sub>Br perovskite solar cells and phase stability was improved significantly.