Aysha Parveen R
@fmedlabsrm.in
Physics and Engineering, SRM IST and Shizuoka University
Shizuoka University
Aysha Parveen R, is a dedicated materials researcher specializing in gas sensors, photodiodes, and functional materials. She joined the Department of Physics and Nanotechnology at SRM Institute of Science and Technology (SRM IST) in August 2020 as a research scholar. Currently, she is pursuing a Double Doctoral Degree at SRM IST, India, and Shizuoka University, Japan.
Aysha completed her Master’s in Physics from Madras Christian College, which is affiliated with the University of Madras, after earning her Bachelor’s in Physics from Gurunanak College, also affiliated with the University of Madras. Her academic journey reflects a strong commitment to advancing the field of materials science through innovative research.
Research interest:
Gas sensor, Photodetector, Photocatalysis, Layered materials, Nanomaterials synthesis and characterization, MXenes
EDUCATION
Ph.D. (Physics and Engineering)
RESEARCH, TEACHING, or OTHER INTERESTS
Materials Science, Atomic and Molecular Physics, and Optics, Energy Engineering and Power Technology, Environmental Science
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
R. Aysha Parveen, E. Vinoth, K. Hara, J. Archana, S. Ponnusamy, and M. Navaneethan
Elsevier BV
B. Malathi, R. Aysha Parveen, P. Bharathi, A. Nakamura, J. Archana, M. Navaneethan, and S. Harish
Elsevier BV
B. Malathi, R. Aysha Parveen, A. Nakamura, J. Archana, M. Navaneethan, and S. Harish
Elsevier BV
R. Aysha Parveen, E. Vinoth, K. Hara, J. Archana, S. Ponnusamy, and M. Navaneethan
Wiley
AbstractConcern over increasing pollution and ways to mitigate it is in high demand due to the swift advancement of technology and the creation of advanced utilities. Nitrogen oxide (NO2) is a well‐known evolved toxin that poses a threat to human health, the environment, and biodiversity. Therefore, several works are carried to sense the NO2 gas at its trace concentration. However, the majority of NO2 sensors that have been reported have inadequate Limit of Detection (LOD), high operating temperature, and low sensitivity. Orthorhombic molybdenum oxide (α‐MoO3) recently emerged as hotspot in the gas sensing research and noted for its high sensitivity, and distinct sensing capabilities owing to its unique layered structure. In this study, Fe‐doped α‐MoO3 nanosheets for NO2 sensing is prepared, and at a low operating temperature of 110 °C, an excellent sensitivity of 1282% for 10 ppm of NO2 is achieved. Long‐term stability, good repeatability, and an ultra‐low detection limit of 79 ppt are also demonstrated by the manufactured sensors. In addition, the obtained low activation energy of ‐2.9 KJ mol−1 and the high band bending for FM6 supports the highly responsive NO2 detection at low operating temperatures.
R. Aysha Parveen, E. Vinoth, S. Harish, K. Hara, J. Archana, S. Ponnusamy, and M. Navaneethan
Elsevier BV
Vinoth Elangovan, Vijay Vaiyapuri, Aysha Parveen R, Archana Jayaram, Harish Santhanakrishnan, and Navaneethan Mani
IOP Publishing
Abstract Near-infrared (NIR) photons are expanding advanced applications in optoelectronics. However, while 2D materials like graphene offer an attractive route for NIR photodetection, the alternative for high-performance NIR detection is still evolving. Hence, solution-processed n-Bi2Se3 /p-Si-based 2D heterojunction photodiodes have been fabricated here and used for high-performance NIR detection. Further, we report high photoresponsivity of 248 mA W−1 at 1100 nm, high external quantum efficiency of 22, 23 and 28% for Ag-loaded (at 5, 7.5 and 10%) Bi2Se3 and good stability. The chemical states of Bi2Se3 and Ag are detected using the core-level spectra of x-ray photoelectron spectroscopy. Photoresponse I–V characteristics are investigated under both dark and illumination; the high photocurrent achieved for Ag-loaded Bi2Se3 and the increase in the forward photocurrent under both dark and bright conditions are reported. The temporal photoresponse curve confirms the good stability (photoswitching behavior) and reproducibility with a response time of 0.74 s and a decay time of 0.18 s. Therefore, these unique performance and device parameters of a manufactured photodiode strongly recommend as a potential heterojunction photodiode for an NIR photodetector.
R. Aysha Parveen, R. Ajay Rakkesh, D. Durgalakshmi, and S. Balakumar
Elsevier BV
RECENT SCHOLAR PUBLICATIONS
MOST CITED SCHOLAR PUBLICATIONS
Publications
Parveen, R. Aysha, E. Vinoth, K. Hara, J. Archana, S. Ponnusamy, and M. Navaneethan. "Fe‐Mediated Tweaking of Band Bending and Activation Energy in α‐MoO3 Nano Lamella for Enhanced NO2 Gas Detection Under Low Operating
Small Methods: 2401214.
Parveen, R. Aysha, E. Vinoth, K. Hara, J. Archana, S. Ponnusamy, and M. Navaneethan. "Synergistic tailoring of adsorption and vacancy enrichment in lamellar stacked layers of α-MoO3 nanorods by Mg2+ for NO2 gas
Sensors and Actuators B: Chemical 417 (2024): 136017.
Parveen, R. Aysha, E. Vinoth, S. Harish, K. Hara, J. Archana, S. Ponnusamy, and M. Navaneethan. "Oxygen vacancies mediated α-MoO3 Nano-ribbons by Cu doping for highly sensitive, selective and rapid detection of hazardous NO2 for gas sensor
Sensors and Actuators B: Chemical 389 (2023): 133810.
Parveen, R. Aysha, R. Ajay Rakkesh, D. Durgalakshmi, and S. Balakumar. "Graphene-Ag2S hybrid nanostructures: A hybrid gas sensor for room temperature hydrogen sensing
Materials Letters 303 (2021): 130470.