Zn

2

SiO

4

:Mn is well-known as green emitting phosphor in PDPs.Zn

2

SiO

4

:Mn is also widely used in cathode ray tube(CRT)

tri-color lamps

color television and thin film electroluminescence devices.Powder samples of Zn

2

SiO

4

:Mn is usually prepared by solid state reaction.Recently

Zn

2

SiO

4

:Mn phosphors are also synthesized by sol-gel

hydrothermal

spry pyrolysis method

etc..In recent years

more and more attention is paid to combustion synthesis(also called self-propagation high-temperature synthesis) because of its advantages

such as production highly crystalline powders in the as-synthesized state

having higher surface areas

and more homogeneous etc.Zn

2

SiO

4

:Mn(0≤

x

≤0.10) powder samples were synthesized successfully by solution combustion process

and its photoluminescence was also investigated.The single-phase of Zn

2-x

SiO

4

:xMn(0≤

x

≤0.10

Willemite) was obtained by combustion synthesis at as low as 600℃ for few minutes

then by heat treatment at above 900℃ for 4h.In the excitation spectra of Zn

2-x

SiO

4

:xMn(0

<

x

≤0.10)

the strong broad excitation band at about 254nm is due to

6

A

1

→

4

T

1

transition of Mn

2+

with monitoring at 525nm emission.At about 525nm

the intense broad band emission was observed under 254nm excitation in Zn

2-x

SiO

4

:xMn(0

<

x

≤0.10).This broad band is attributed to

4

T

1

→

6

A

1

transition of Mn

2+

.SEM photography shows its spherical morphology.The results indicated that luminescence efficiency

the location of the strongest band and the optimum concentration of activator depend on starting materials

combustion temperatures

the dosage of fuels and the size of powder samples etc.