Intrinsic Defects Formation and Subsequent Direct and Indirect Transitions due to Ammonia in rGO – ZnO Nanocomposites

Arnab Sankar Bhattacharyya; Ritambhara Dash

Volume 8, Issue 1 , 2023, , Pages 1-6

  The rGO-ZnO composite was found promising improvement over the photocatalytic ability of pure ZnO and is useful for other Opto-chemical applications. ZnO/rGO composite was synthesized by the sol-gel method. The morphology of rGO caused better dispersion of the ZnO crystallites The reducing agent ammonia ...  Read More

Optical constants change in As40Se60 and As50Se50 : A comparative study by FTIR and XPS

Ramakanta Naik; C. Sripan; R. Ganesan

Volume 3, Issue 7 , 2018, , Pages 458-463

  In this manuscript, the As40Se60 and As50Se50 samples of 800nm thickness were deposited onto glass substrate by thermal evaporation technique. The as-deposited films were characterized using X-ray diffraction (XRD) and FTIR Spectrophotometer. The prepared samples are amorphous type. The transmission ...  Read More

Synthesis and characterizations of Mn doped alloyed ZnxCd1-xS nanocrystals

Manpreet Kaur; Akshay Kumar; Manoj Sharma

Volume 2, Issue 7 , 2017, , Pages 455-457

  Composition regulation of semiconductors can engineer the band gap and thus tune the optical properties. For effective utilization of orange emitting phosphors in color conversion applications blue excitation is necessary.  Here in this work, absorption and photoluminescence spectroscopic measurements ...  Read More

Electronic levels of small molecules for organic solar cells: A computational study

Shahjad .; Ranoo Bhargav; Dinesh Bhardwaj; Asit Patra

Volume 2, Issue 5 , 2017, , Pages 294-298

  Currently significant progress has been made for the small molecules, indeed, achieved comparable performance compared to polymer in electronic devices mainly due to the many advantages of small molecules over the polymers. Designing better small molecules for electronic applications are required a comprehensive ...  Read More

Structural and optical characterization of MnFe2O4 nanoparticles

Elangbam C. Devi; Ibetombi Soibam

Volume 2, Issue 2 , 2017, , Pages 93-96

  Manganese ferrite nanoparticles with chemical formula MnFe2O4 have been synthesized by low temperature chemical co-precipitation method. The structural and optical properties of the nanoparticles were studied by using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray ...  Read More

Optical property and AC conductivity RF sputtered N-doped ZnO thin films

Trilok K. Pathak; L. P. Purohit

Volume 2, Issue 1 , 2017, , Pages 6-9

  ZnO and ZnO:N thin films were deposited on plane glass substrate using RF sputtering method. The crystalline structure and surface morphology of the film was investigated using XRD and SEM. The XRD patterns of ZnO thin films have largest crystalline orientation for the (002) peak and shows wurtzite structure. ...  Read More

Influence of Bi addition on the optical properties of As40Se60 thin films

Mukta Behera; Rozalin Panda; Naresh C. Mishra; Ramakanta Naik

Volume 1, Issue 2 , 2016, , Pages 200-204

  In the present work, structural, microstructural, compositional and electronic band gap properties of As40Se60 and As40Bi15Se45 bulk and thin films are reported. The films were prepared by thermal evaporation technique under high vacuum. X-ray diffraction (XRD) study indicated amorphous nature of As40Se60 ...  Read More

Effect of thermal annealing on the structural, optical and microstructural properties of AgInSe2 thin films

Rozalin Panda; Ramakanta Naik; Udai. P. Singh; Naresh. C. Mishra

Volume 1, Issue 1 , 2016, , Pages 109-113

  In the present work, Ag/In/Ag/In multilayers were deposited on glass substrates by DC magnetron sputtering and the films were selenized at 350℃. The selenized films were annealed at 450℃ and 500℃. The selenized and annealed films were characterized by X-ray diffraction (XRD), UV-Visible-NIR spectroscopy ...  Read More