A method for calibrating the binding energy scale of surface indeterminate carbon peaks based on work function
By combining XPS and UPS, the binding energy of surface indeterminate carbon peaks was calibrated using the work function, which solved the problem of inaccurate binding energy scaling caused by exogenous indeterminate carbon, and enabled accurate chemical state and bonding structure analysis of unknown materials.
Patent Information
- Application Number
- CN202310473911.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-04-28
- Publication Date
- 2026-05-26
- Estimated Expiration
- 2043-04-28
AI Technical Summary
In existing technologies, the binding energies of the C/CH peaks of exogenous indeterminate carbon are arbitrarily set, resulting in inaccurate elemental binding energy scaling and affecting the correct interpretation of chemical bonds. This is especially problematic in materials with unknown structures or unknown standard band gaps, where calibration becomes difficult.
The method of combining XPS and UPS was used to determine the C 1s binding energy of the indeterminate carbon on the sample surface by full-spectrum scanning and narrow-spectrum scanning. The binding energy of the CC/CH peak was calibrated using the work function, and its sum with the work function of the sample was defined as 289.50 eV. The drift value was calculated and the binding energy of other elements was calibrated.
It enables accurate analysis of the chemical state and bonding structure of sample surfaces, and is applicable to materials with unknown structures or unknown standard band gaps, thus improving the accuracy of binding energy scaling.