Varnakavi Naresh

I am V. Naresh,  working as a postdoctoral researcher at the School of advanced material engineering, Kookmin University, Seoul, South Korea. With  6+ years of research experience in different topics (metal halide perovskite nanocrystals/ quantum dots and optical materials like glasses, glass ceramics, and nanophosphors (Up- and down- conversion) applied in the fields of optoelectronics, photovoltaics, and photonics) have given me good flexibility of mind and enabled me to learn and improve many technical skills in the experimental analysis of nano-, micro-, and bulk-materials for various prominent and potential applications.

I have 6+ years of experience as a postdoctoral researcher and published 30 articles in various reputed international journals.

Research Interests (Experiment Analysis)

 Synthesis of metal halide perovskite-based nanocrystals/quantum dots using various synthesis techniques, such as hot-injection, post-synthesis treatment, sonochemical and co-precipitation methods, and their applications in multicolor and white LEDs, photovoltaics, scintillators, photocatalysis, and laser gain media.

 Preparation of rare-earth-doped glasses, and glass ceramics using the melt quench method for their application in LEDs, photovoltaics, scintillators, optical fiber, laser gain media, and dielectric, and electrode materials

 Synthesis of rare-earth-activated phosphor and nanophosphors (up-and downconversion) using solid-state and hydrothermal, co-precipitation, and sol-gel techniques for their application in multicolor to white LEDs, scintillators, photovoltaics, dielectric, and electrode materials.

 Preparation of polymer films using solution casting method for their application as cathode materials.

 Using various characterization techniques such as structural (FTIR, Raman, XRD) thermal (TGA-DTA-DSC) morphology (SEM & TEM), and transient absorption, optical absorption, & photoluminescence (emission, excitation, and lifetime) and X-ray scintillation properties, nano, micro, and bulk materials are analyzed.