dextercioby said:
What makes metals 'metallic' is that they give up their electrons easily, (thus making them conductive).Oerg said:
With non-metals, you must also overcome the band-gap which can be several eV wide. So it would take more energetic (higher frequency) radiation...but it is possible.Oerg said:
answered in post #8Oerg said:
Oerg said:
I thought XPS has been used on bandgap insulators as well.ZapperZ said:
Gokul43201 said:
The metal commonly used in photoelectric experiments is called a photocathode. It is typically made of materials such as cesium, potassium, or rubidium, which have a low work function and can easily emit electrons when exposed to light.
The choice of metal can significantly affect the results of a photoelectric experiment. Metals with lower work functions will require less energy to emit electrons, resulting in a higher photoelectric current. Additionally, different metals have different sensitivities to different wavelengths of light, which can also impact the results.
While metals are the most commonly used materials in photoelectric experiments, other materials such as semiconductors and insulators can also exhibit the photoelectric effect. These materials have different properties and can provide valuable insights into the nature of the photoelectric effect.
Yes, the choice of metal can be changed during a photoelectric experiment. This can be done by replacing the photocathode or by using a metal with a different work function for the anode. This allows for the study of how different metals affect the photoelectric current under the same experimental conditions.
The choice of metal in a photoelectric experiment is based on several factors, including its work function, sensitivity to different wavelengths of light, and stability. Scientists may also choose to use a specific metal based on its properties in order to test a particular hypothesis or to compare it to previous experimental results.