Band Gaps from Spectra
Band Gap from an O (1s) Spectrum
Spectra Useful to Estimate
Band Gaps from Main Metal Signal of Metal Oxides
Spectra Useful to EstimateÂ
Band Gaps from Oxygen (1s) Signal of Metal Oxides
| Metal Oxide – O (1s) Signal – Band Gap
Mainly Insulating Oxides – a few are conductive |
Metal Oxide – Main XPS Signal – Band Gap
Mainly Insulating Oxides – a few are conductive |
 Pure Metal – Main Signal
Conductors – NO Band Gap |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
|
 |
 |
 |
 |
 |
 |
|
 |
 |
 |
 |
||
 |
||
 |
||
 |
 |
||
 |
 |
 |
||
 |
 |
|
 |
||
 |
||