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Fluorescent manganese-doped zinc sulphide nanoparticles for spectral shifting

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Title Fluorescent manganese-doped zinc sulphide nanoparticles for spectral shifting
 
Creator SEN, S
SHARMA, P
SOLANKI, CS
BANDYOPADHYAYA, R
 
Subject zns thin-films
chemical bath deposition
pbs quantum dots
optical-properties
room-temperature
silica matrix
photoluminescence
nanocrystals
luminescence
mn2+
 
Description Spectral shifting by luminescent nanoparticles is expected to enhance solar cell performance by avoiding wastage of high energy photons. Manganese-doped zinc sulphide nanoparticles, with a PL emission peak around 600 nm, were selected as a possible candidate for such a luminescent down-shifting material. To investigate their fluorescence properties, ZnS:Mn nanoparticles were synthesized by a chemical route using thiourea to limit the reaction rate and achieve controlled, uniform formation of nanoparticles. Incipient ZnS: Mn nanoparticles were encapsulated in ZnS shells by employing the in-situ thermal decomposition of pre-formed zinc-thiourea complex. The resulting core-shell nanoparticles were dispersed in a protective matrix composed of sodium hexametaphosphate. TEM studies showed the formation of spherical and distinct ZnS: Mn nanoparticles in the size range 50-100 nm, while UV-Vis spectra clearly showed quantum confinement effects.
 
Publisher IEEE
 
Date 2011-10-25T07:43:19Z
2011-12-15T09:11:41Z
2011-10-25T07:43:19Z
2011-12-15T09:11:41Z
2010
 
Type Proceedings Paper
 
Identifier 35TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE,
978-1-4244-5891-2
0160-8371
http://dspace.library.iitb.ac.in/xmlui/handle/10054/15648
http://hdl.handle.net/100/2221
 
Source 35th IEEE Photovoltaic Specialists Conference,Honolulu, HI,JUN 20-25, 2010
 
Language English