Green luminescence from copper doped zinc sulphide quantum particles

Ali Azam Khosravi; Manisha Kundu; Lalita Jatwa; S. K. Deshpande; U. A. Bhagwat; Murali Sastry; S. K. Kulkarni

doi:10.1063/1.114298

Green luminescence from copper doped zinc sulphide quantum particles

Ali Azam Khosravi, Manisha Kundu, Lalita Jatwa, S. K. Deshpande, U. A. Bhagwat, Murali Sastry, S. K. Kulkarni

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292 Citations (Scopus)

Abstract

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 ∼21±2 Å which is smaller than the Bohr exciton diameter for zinc sulphide. UV absorption shows an excitonic peak centered at ∼300 nm corresponding to an energy gap of 4.1±0.1 eV. These particles show a luminescence band at ∼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.

Original language	English
Pages (from-to)	2702
Number of pages	1
Journal	Applied Physics Letters
Volume	67
DOIs	https://doi.org/10.1063/1.114298
Publication status	Published - 1995
Externally published	Yes

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title = "Green luminescence from copper doped zinc sulphide quantum particles",

abstract = "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 ∼21±2 {\AA} which is smaller than the Bohr exciton diameter for zinc sulphide. UV absorption shows an excitonic peak centered at ∼300 nm corresponding to an energy gap of 4.1±0.1 eV. These particles show a luminescence band at ∼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.",

author = "Khosravi, \{Ali Azam\} and Manisha Kundu and Lalita Jatwa and Deshpande, \{S. K.\} and Bhagwat, \{U. A.\} and Murali Sastry and Kulkarni, \{S. K.\}",

year = "1995",

doi = "10.1063/1.114298",

language = "English",

volume = "67",

pages = "2702",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

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TY - JOUR

T1 - Green luminescence from copper doped zinc sulphide quantum particles

AU - Khosravi, Ali Azam

AU - Kundu, Manisha

AU - Jatwa, Lalita

AU - Deshpande, S. K.

AU - Bhagwat, U. A.

AU - Sastry, Murali

AU - Kulkarni, S. K.

PY - 1995

Y1 - 1995

N2 - 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 ∼21±2 Å which is smaller than the Bohr exciton diameter for zinc sulphide. UV absorption shows an excitonic peak centered at ∼300 nm corresponding to an energy gap of 4.1±0.1 eV. These particles show a luminescence band at ∼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.

AB - 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 ∼21±2 Å which is smaller than the Bohr exciton diameter for zinc sulphide. UV absorption shows an excitonic peak centered at ∼300 nm corresponding to an energy gap of 4.1±0.1 eV. These particles show a luminescence band at ∼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.

UR - https://www.scopus.com/pages/publications/0029390883

U2 - 10.1063/1.114298

DO - 10.1063/1.114298

M3 - Article

AN - SCOPUS:0029390883

SN - 0003-6951

VL - 67

SP - 2702

JO - Applied Physics Letters

JF - Applied Physics Letters

ER -

Green luminescence from copper doped zinc sulphide quantum particles

Abstract

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