A5034614294- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Perovskite Materials and Applications
- Metallurgical Processes and Thermodynamics
- Nanomaterials for catalytic reactions
- Advanced Semiconductor Detectors and Materials
- Advanced Thermoelectric Materials and Devices
- Metal Alloys Wear and Properties
- Material Properties and Failure Mechanisms
- Semiconductor Quantum Structures and Devices
- Catalysis and Hydrodesulfurization Studies
- Advanced materials and composites
- Coral and Marine Ecosystems Studies
- Iron and Steelmaking Processes
- Nanocluster Synthesis and Applications
- Advanced Photocatalysis Techniques
New York University
2022-2024
Norwegian University of Science and Technology
2012
Infrared (IR) photodetectors are playing an increasingly central role in modern technology, moving well beyond their niches military and aerospace applications to emerging fields like machine vision consumer...
Abstract Tri‐cation (Cs + /CH 3 NH /CH(NH 2 ) and dual‐anion (Br – /I perovskites are promising light absorbers for inexpensive infrared (IR) photodetectors but degrade under prolonged IR exposure. Here, stable based on electrospun tri‐cation perovskite fibers infiltrated with hole‐transporting π‐conjugated small molecule 2,2′,7,7′‐tetrakis[ N , ‐di(4‐methoxyphenyl)amino]‐9,9‐spirobifluorene (Spiro‐OMeTAD) demonstrated. These hybrid operate at a low bias of 5 V exhibit ultra‐high gains...
Tailoring nanoscale catalysts to targeted applications is a vital component in reducing the carbon footprint of industrial processes; however, understanding and controlling nanostructure influence on challenging. Molybdenum disulfide (MoS2), transition metal dichalcogenide (TMD) material, popular example nonplatinum-group-metal catalyst with tunable properties. Doping atoms, such as cobalt, one method enhancing its catalytic However, location dopant atoms behavior are poorly understood. To...
Colloidal quantum dot (CQD) infrared (IR) photodetectors can be fabricated and operated with larger spectral tunability, fewer limitations in terms of cooling requirements substrate lattice matching, at a potentially lower cost than detectors based on traditional bulk materials. Silver selenide (Ag2Se) has emerged as promising sustainable alternative to current state-of-the-art toxic semiconductors lead, cadmium, mercury operating the IR. However, an impeding gap available absorption...
Abstract Colloidal quantum dot (CQD) based infrared (IR) photodetectors offer facile wavelength tunability in the IR and low‐cost fabrication. However, owing to their large surface areas, CQDs intrinsically have significant traps critically affecting speed of CQD photodetectors, typically mediated through tedious passivation efforts. In this report, an alternative strategy involving coupling near‐IR photoactive lead sulfide with a thermally evaporated amorphous selenium (a‐Se) hole transport...
Colloidal quantum dots (CQDs) provide wide spectral tunability and high absorption coefficients owing to confinement large oscillator strengths, which along with solution processability, allow a facile, low-cost, room-temperature deposition technique for the fabrication of photonic devices. However, many solution-processed CQD photodetector devices demonstrate low specific-detectivity slow temporal response. To achieve improved characteristics, limiting carrier recombination enhancing...
Colloidal quantum dots (CQDs) allow for wavelength-tunable, economic, and elegant access to the infrared (IR) spectrum by utilizing inter- intraband excitonic transitions in narrow bandgap semiconductors. With emergence of new applications IR detection, developing competitive non-toxic environmentally benign alternatives heavy metal-containing semiconductor QDs is increasing importance. Over last decade, silver selenide (Ag2Se) has emerged as an alternative lead- mercury-based QDs,...