Many techniques: common is by blending your sample with 'non-interacting conductive impurites'... 

Blending may not be an option in my case since i am investigating polymer blend nanofibers and I want to look at miscibility of polymers in the blend.

Hi Justin,

Thank you for your suggestion. I tried using the charge neutraliser but it does not help. I still have the charging effect.

Hi Nowsheen,

I agree with Justin that a common approach is an electron neutralizer. When dealing with insulators however there is a charge balancing act to perform in order to achieve zero net charge. So it may be that you have not enough or too many electrons to compensate for the positive charge on the sample . You may have to fine tune the emission control on your neutralizer to achieve zero net charge for any given x-ray flux on the sample.

Hi,

The following procedures may apply to ease the charge compensation:

1.X-ray source with a lower flux density.

2. Earthed conductive grid (tungsten) or a conductive tape (aluminum or copper) in close proximity to the affected area.

3.conductive layer coating .

4. Pressing the sample into indium foil.

5. Heating (∼400°C) the thermally stable sample during analysis which can promote electrons into the conduction band of large band gap materials.

6. Secondary electrons from x-ray source window

In addition to what was suggested earlier you can also try to make your sample as thin as possible and have it on a conducting substrate. Many insulating materials can be studied by XPS if the layer thickness is less than 10 nm, since electrons excited in the substrate can compensate the positive charge at the surface.