Rashtrasant Tukadoji Maharaj Nagpur University

About: Rashtrasant Tukadoji Maharaj Nagpur University is a education organization based out in Nagpur, Maharashtra, India. It is known for research contribution in the topics: Phosphor & Photoluminescence. The organization has 2022 authors who have published 3247 publications receiving 39770 citations. The organization is also known as: RTMNU & Nagpur University.

Organic light emitting diodes: Energy saving lighting technology—A review

Abstract: This paper reflects the achievements and the challenges ahead in the field of organic light emitting diodes (OLEDs). The primary intention of this paper is to study different organic materials synthesized so far and the OLEDs fabricated for solid-state lighting. After deep review of literature we have synthesized and characterized rare earth based europium organic complexes Eu(TTA)3Phen, Eu(x)Y(1−x)(TTA)3Phen, and Eu(x)Tb(1−x)(TTA)3Phen, where x = 0.4 and 0.5 by solution technique maintaining stoichiometric ratio. Blended films of pure and doped Eu complexes that are molecularly doped into polymer resins namely polymethylmethacrylate (PMMA) and polystyrene (PS) are prepared according to weight percentage. Concentration effect on absorption and emission spectra of the blended films was studied for different weight percentages (10, 25, 50, 60%). All the complexes doped in PMMA showed an excellent transparency of 90–97% while the complexes doped in polystyrene showed a transparency of 85–90%, bit less than in PMMA. Energy gap of the synthesized complexes have been determined in PMMA and PS. Considering the facts that these complexes have good solubility in most of the organic solvents, the absorption spectra of Eu(TTA)3Phen, Eu0.5Y0.5(TTA)3Phen and Eu0.5Tb0.5(TTA)3Phen complexes are studied, and OLED devices having the structure ITO/m-MTDATA/α-NPD/TPBi:Eu(x)Y(1−x)(TTA)3Phen/Alq3/LiF:Al (where x = 0.4, 0.5) were fabricated and characterized. Significant red emission was observed from fabricated OLED devices at 612 nm when operated in a range of 10–18 V. Thus the synthesized rare earth based organic complexes are the best suitable candidates for fabrication of red OLED devices. The extensive review on OLEDS concludes that our present lighting system can be replaced with white OLEDS, recently developed energy saving lighting technology.

Nanomaterials-based advanced oxidation processes for wastewater treatment: A review

Abstract: Over the past decades, advanced oxidation processes (AOPs) for wastewater treatment drawn a great deal of attention of the researchers. AOP’s are one of the promising advanced technologies to destroy the total organic content, toxic pollutants etc. from the wastewater. A number of attempts has been made from the past two decades on the waste water treatment using various advanced oxidation treatment techniques. The main objective of this review article is to provide the quick reference for researchers and academicians in the area of wastewater treatment using nanomaterials in conjunction with various AOPs and/or hybrid AOPs. This review article is mainly focused on (1) the nanomaterials-based individual and hybrid AOPs for treatment of various industrial effluents or model effluents, (2) the current status of work in the area of hybrid nanomaterials as heterogeneous catalysts combined with AOPs and hybrid advanced oxidation processes.