Enhancement of ultraviolet emissions from ZnO films by Ag doping

Duan, Li; Lin, Bing; Zhang, Weiying; Zhong, Sheng; Fu, Zhaoming

doi:10.1063/1.2211053

Cited by 130 publications

(87 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is clear that the intensity of this peak increases with the increasing amount of the Ag and Zn acceptors. When the ZnO colloid is overdoped by Ag, the Ag 2 O nanoclusters appears and hence there is reduction in PL intensity [20]. The emission of ZnO at 385 nm can be attributed to exciton transition.…”

Section: Resultsmentioning

confidence: 97%

Spectral and nonlinear optical characteristics of nanocomposites of ZnO–Ag

Irimpan

Nampoori

Radhakrishnan

2008

Chemical Physics Letters

View full text Add to dashboard Cite

a b s t r a c tIn this Letter we present the spectral and nonlinear optical properties of ZnO-Ag nanocomposites prepared by colloidal chemical synthesis. Obvious enhancement of ultraviolet (UV) emission of the samples is observed and the strongest UV emission is over three times than that of pure ZnO. These nanocomposites show self-defocusing nonlinearity and good nonlinear absorption behaviour which increases with increasing Ag volume fraction. The observed nonlinear absorption is explained through two photon absorption followed by free carrier absorption. ZnO-Ag is a potential nanocomposite material for the UV light emission and for the development of nonlinear optical devices with a relatively small limiting threshold.

show abstract

Section: Resultsmentioning

confidence: 97%

Spectral and nonlinear optical characteristics of nanocomposites of ZnO–Ag

Irimpan

Nampoori

Radhakrishnan

2008

Chemical Physics Letters

View full text Add to dashboard Cite

show abstract

“…Therefore, some researchers paid attention to the nanostructures of ZnO film or nanocomposition correlative to ZnO. [6][7][8] However, it was difficult to control the composition of nanostructures to get better result. In addition, some others enhance the ultraviolet emission by depositing ZnO films with different buffers, such as MgF 2 , CaF 2 , ZnO, GaN.…”

Section: Introductionmentioning

confidence: 99%

Influence of TiO<SUB>2</SUB> Buffer on Structure and Optical Properties of ZnO Film on Si(100) Substrate

et al. 2010

Self Cite

View full text Add to dashboard Cite

ZnO films were prepared on p-Si (100) substrates by direct current (DC) sputtering with and without TiO 2 buffer. The crystal structures, surface morphologies and optical properties were investigated by X-ray diffraction (XRD), scanning electron microscope (SEM) and photoluminescence (PL). XRD results indicated that the growth mode of ZnO film was changed from strong (002) preferential orientation to several crystal orientations by introducing TiO 2 buffer, and the residual strain was reduced. SEM manifested that ZnO film with TiO 2 buffer had the uniform grain size and flat surface. In addition, stronger ultraviolet emission was observed from ZnO film with TiO 2 than that without at room temperature. The low temperature photoluminescence was investigated to understand the different PL mechanism of ZnO films.

show abstract

“…To avoid this problem, doping with group IB elements was theoretically suggested 20) and a very few reports are available on ptype ZnO with Ag doping deposited by sputtering method and PLD. [17][18][19] In this work, realization of p-type ZnO thin films by ebeam evaporation of ZnO:Ag 2 O target are reported. The e-beam evaporation method has several advantages.…”

Section: Introductionmentioning

confidence: 99%

“…[2][3][4][5][6] To compensate and suppress the native donor defects, it is needed to find proper p-type dopant material. Many research groups have reported group I (Li, Na and K), [7][8][9] group V (N, P, Sb and As), [10][11][12][13][14][15] and group IB (Cu and Ag) [16][17][18][19] elements as p-type dopants.…”

Section: Introductionmentioning

confidence: 99%