عنوان

Spectroscopic studies of zinc(1-x) manganese(x) sulfur

Number

TLpq220051405

.Language of Text, Soundtrack etc

انگلیسی

Title Proper

Spectroscopic studies of zinc(1-x) manganese(x) sulfur

General Material Designation

[Thesis]

First Statement of Responsibility

X. Chen

Subsequent Statement of Responsibility

F. D. Medina

Name of Publisher, Distributor, etc.

Florida Atlantic University

Date of Publication, Distribution, etc.

1992

Specific Material Designation and Extent of Item

132

Dissertation or thesis details and type of degree

M.S.

Body granting the degree

Florida Atlantic University

Text preceding or following the note

1992

Text of Note

The optical properties of the diluted magnetic semiconductor Zn1-xMnxS have been studied by using photoluminescence emission, lifetime and excitation spectroscopies. In photoluminescence spectroscopy three bands were found peaking at 585 nm (yellow band), 650 nm (orange band) and 750 nm (red band). For the yellow and red bands the peak position changes little with Mn concentration. For the orange band the peak energy decreases with increasing Mn concentration. The lifetimes of the yellow, orange and red bands were found to be about 70, 50 and 7 mus. The results of the lifetime measurements support the assumption that there is energy transfer from the yellow to the red band through radiationless transitions. In the excitation spectroscopy of the yellow band four peaks were found peaking near 526, 487, 461 and 426 nm. These four bands have been ascribed to transitions from the four lowest excited states of Mn to the ground state. (Abstract shortened with permission of author.)

Condensation

Optics

Optics

Physics

Physics

Pure sciences

F. D. Medina

X. Chen

Electronic name

p

[Thesis]

276903

a

Y