Shrivastav ashok kumar (18 risultati)

Condizione: New.

Condizione: New.

Taschenbuch. Condizione: Neu. Luminescence studies of Yttrium and Cerium | Photoconductivity and Photoluminescence studies of chemically deposited films, (rare earth element Yttrium and Cerium) | Ashok Kumar Shrivastav (u. a.) | Taschenbuch | Englisch | 2023 | LAP LAMBERT Academic Publishing | EAN 9786206767602 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.…

Taschenbuch. Condizione: Neu. Electro-Optical studies of Nanocomposites | Ab-initio Investigation, Optoelectronics, Synthesis and Electro-Optical studies of ZnO/Graphene based Nanocomposites | Ashok Kumar Shrivastav (u. a.) | Taschenbuch | Englisch | 2023 | LAP LAMBERT Academic Publishing | EAN 9786206779247 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.…

Taschenbuch. Condizione: Neu. Perovskites With Nanoparticles For Solar Cell Applications | Synthesis and Study of CsMX3 Based Perovskites Decorated with Various Nanoparticles for Solar Cell Applications | Ashok Kumar Shrivastav (u. a.) | Taschenbuch | Englisch | 2023 | LAP LAMBERT Academic Publishing | EAN 9786206782889 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Photoconductivity is the phenomenon of enhancement of conductivity due to irradiation of light photons. Further, photoluminescence is the phenomenon of emission oflight in the visible or near visible region due to excitation of light photons. Both these phenomena involve processes like excitation, recombination and trapping of carriers etc. The present thesis is concerned with mainly photoconductivity and photoluminescence studies of (Cd- Pb )S : CdC12 ,Y ICe films prepared by chemical deposition technique. Results of optical absorption spectra, XRD and SEM studies are also presented for characterization of materials of present investigation. 164 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This work is for a basic understanding about the synthesis process of ZnO structures like nanoparticles (NPs) and nanowires (NWs). ZnO NPs and NWs have been successfully prepared by using successive ionic layer adsorption and reaction (SILAR) methods under a normal environment. The optical properties of as-synthesized NPs and NWs are characterized by using different techniques like photoluminescence (PL) spectroscopy and UV-Visible (UV-Vis) spectroscopy. The structural and morphological properties of prepared morphologies of ZnO were investigated by Xray diffraction (XRD) and scanning electron microscopy (SEM). The compositional verification of the synthesized samples were measured by energy-dispersive X-ray spectroscopy (EDX) to confirm the presence of Zn and O. The effective defect control in the PL emission and the uniform wire-like structure with a hexagonal tip confirmed the formation of NWs. This work gives a comparative study and successful synthesis techniques of ZnO NWs and NPs. 168 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The CsPbBr2Cl and composite CsPbBr2Cl:ZnO thin films were fabricated via low-temperature, solution-processed full doctor blade method. The surface morphology and crystallinity of the synthesized thin films were investigated by XRD, SEM and EDX. UV-Visible and photoluminescence measurements were performed to study the optical properties of the synthesized thin films. The composite system showed red shift and comparatively smaller bandgap with sharp PL emission, which can be attributed to the formation of CsPbBr2Cl:ZnO. Compositional analyses of prepared films were analyzed by FTIR analysis. This study revealed that the incorporation of zinc oxide (ZnO) nanoparticles NPs into the CsPbBr2Cl precursor solution enhanced the optical and morphological properties of perovskite. By introducing an appropriate amount of ZnO NPs into CsPbBr2Cl perovskite precursor solution, more compact, smooth, uniform, pinholes-free, thin films with good surface coverage, enhanced crystallization, larger grains and better optoelectronic properties can be obtained. 248 pp. Englisch.…

Condizione: New. Print on Demand.

Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Photoconductivity is the phenomenon of enhancement of conductivity due to irradiation of light photons. Further, photoluminescence is the phenomenon of emission oflight in the visible or near visible region due to excitation of light photons. Both these phe.…

Taschenbuch. Condizione: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - This work is for a basic understanding about the synthesis process of ZnO structures like nanoparticles (NPs) and nanowires (NWs). ZnO NPs and NWs have been successfully prepared by using successive ionic layer adsorption and reaction (SILAR) methods under a normal environment. The optical properties of as-synthesized NPs and NWs are characterized by using different techniques like photoluminescence (PL) spectroscopy and UV-Visible (UV-Vis) spectroscopy. The structural and morphological properties of prepared morphologies of ZnO were investigated by Xray diffraction (XRD) and scanning electron microscopy (SEM). The compositional verification of the synthesized samples were measured by energy-dispersive X-ray spectroscopy (EDX) to confirm the presence of Zn and O. The effective defect control in the PL emission and the uniform wire-like structure with a hexagonal tip confirmed the formation of NWs. This work gives a comparative study and successful synthesis techniques of ZnO NWs and NPs.…

Taschenbuch. Condizione: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Photoconductivity is the phenomenon of enhancement of conductivity due to irradiation of light photons. Further, photoluminescence is the phenomenon of emission oflight in the visible or near visible region due to excitation of light photons. Both these phenomena involve processes like excitation, recombination and trapping of carriers etc. The present thesis is concerned with mainly photoconductivity and photoluminescence studies of (Cd- Pb )S : CdC12 ,Y ICe films prepared by chemical deposition technique. Results of optical absorption spectra, XRD and SEM studies are also presented for characterization of materials of present investigation.…

Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. The CsPbBr2Cl and composite CsPbBr2Cl:ZnO thin films were fabricated via low-temperature, solution-processed full doctor blade method. The surface morphology and crystallinity of the synthesized thin films were investigated by XRD, SEM and EDX. UV-Visible a.…

Condizione: New. PRINT ON DEMAND.

Taschenbuch. Condizione: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - The CsPbBr2Cl and composite CsPbBr2Cl:ZnO thin films were fabricated via low-temperature, solution-processed full doctor blade method. The surface morphology and crystallinity of the synthesized thin films were investigated by XRD, SEM and EDX. UV-Visible and photoluminescence measurements were performed to study the optical properties of the synthesized thin films. The composite system showed red shift and comparatively smaller bandgap with sharp PL emission, which can be attributed to the formation of CsPbBr2Cl:ZnO. Compositional analyses of prepared films were analyzed by FTIR analysis. This study revealed that the incorporation of zinc oxide (ZnO) nanoparticles NPs into the CsPbBr2Cl precursor solution enhanced the optical and morphological properties of perovskite. By introducing an appropriate amount of ZnO NPs into CsPbBr2Cl perovskite precursor solution, more compact, smooth, uniform, pinholes-free, thin films with good surface coverage, enhanced crystallization, larger grains and better optoelectronic properties can be obtained.…

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -This work is for a basic understanding about the synthesis process of ZnO structures like nanoparticles (NPs) and nanowires (NWs). ZnO NPs and NWs have been successfully prepared by using successive ionic layer adsorption and reaction (SILAR) methods under a normal environment. The optical properties of as-synthesized NPs and NWs are characterized by using different techniques like photoluminescence (PL) spectroscopy and UV-Visible (UV-Vis) spectroscopy. The structural and morphological properties of prepared morphologies of ZnO were investigated by Xray diffraction (XRD) and scanning electron microscopy (SEM). The compositional verification of the synthesized samples were measured by energy-dispersive X-ray spectroscopy (EDX) to confirm the presence of Zn and O. The effective defect control in the PL emission and the uniform wire-like structure with a hexagonal tip confirmed the formation of NWs. This work gives a comparative study and successful synthesis techniques of ZnO NWs and NPs.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 168 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Photoconductivity is the phenomenon of enhancement of conductivity due to irradiation of light photons. Further, photoluminescence is the phenomenon of emission oflight in the visible or near visible region due to excitation of light photons. Both these phenomena involve processes like excitation, recombination and trapping of carriers etc. The present thesis is concerned with mainly photoconductivity and photoluminescence studies of (Cd- Pb )S : CdC12 ,Y ICe films prepared by chemical deposition technique. Results of optical absorption spectra, XRD and SEM studies are also presented for characterization of materials of present investigation.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 164 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -The CsPbBr2Cl and composite CsPbBr2Cl:ZnO thin films were fabricated via low-temperature, solution-processed full doctor blade method. The surface morphology and crystallinity of the synthesized thin films were investigated by XRD, SEM and EDX. UV-Visible and photoluminescence measurements were performed to study the optical properties of the synthesized thin films. The composite system showed red shift and comparatively smaller bandgap with sharp PL emission, which can be attributed to the formation of CsPbBr2Cl:ZnO. Compositional analyses of prepared films were analyzed by FTIR analysis. This study revealed that the incorporation of zinc oxide (ZnO) nanoparticles NPs into the CsPbBr2Cl precursor solution enhanced the optical and morphological properties of perovskite. By introducing an appropriate amount of ZnO NPs into CsPbBr2Cl perovskite precursor solution, more compact, smooth, uniform, pinholes-free, thin films with good surface coverage, enhanced crystallization, larger grains and better optoelectronic properties can be obtained.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 248 pp. Englisch.…