GREEN LUMINESCENCE FROM COPPER-DOPED ZINC-SULFIDE QUANTUM PARTICLES

被引：262

作者：

KHOSRAVI, AA

KUNDU, M

JATWA, L

DESHPANDE, SK

BHAGWAT, UA

SASTRY, M

KULKARNI, SK

机构：

[1] NMV COLL,DEPT CHEM,POONA 411030,MAHARASHTRA,INDIA

[2] NATL CHEM LAB,POONA 411008,MAHARASHTRA,INDIA

来源：

APPLIED PHYSICS LETTERS | 1995年 / 67卷 / 18期

关键词：

D O I：

10.1063/1.114298

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Free-standing powder of zinc sulphide quantum particles has been synthesized using a chemical route. X-ray diffraction analysis shows that the diameter of the particles is similar to 21+/-2 Angstrom which is smaller than the Bohr exciton diameter for zinc sulphide. UV absorption shows an excitonic peak centered at similar to 300 nm corresponding to an energy gap of 4.1+/-0.1 eV. These particles show a luminescence band at similar to 424 nm. The quantum particles could be doped with copper during synthesis without altering the UV absorption or x-ray diffraction pattern. However, doping shifted the luminescence to 480 nm, green wavelength in the visible region. (C) 1995 American Institute of Physics.

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页码：2702 / 2704

页数：3

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