Work Functions for Photoelectric Effect (original) (raw)
| Element | Work Function(eV) |
|---|---|
| Aluminum | 4.08 |
| Beryllium | 5.0 |
| Cadmium | 4.07 |
| Calcium | 2.9 |
| Carbon | 4.81 |
| Cesium | 2.1 |
| Cobalt | 5.0 |
| Copper | 4.7 |
| Gold | 5.1 |
| Iron | 4.5 |
| Lead | 4.14 |
| Magnesium | 3.68 |
| Mercury | 4.5 |
| Nickel | 5.01 |
| Niobium | 4.3 |
| Potassium | 2.3, 2.29** |
| Platinum | 6.35 |
| Selenium | 5.11 |
| Silver | 4.26-4.73* |
| Sodium | 2.28, 2.36** |
| Uranium | 3.6 |
| Zinc | 4.3 |
Some data from Handbook of Chemistry and Physics.
* The case of silver apppears to be somewhat unique in that the work functions measured for different crystal faces are significantly different. For polycrystalline silver a value of 4.26 eV has been measured, but for a single crystal a value of 4.74 eV has been measured for the (111) face, with intermediate values of 4.64 eV (100) and 4.52 eV (110). Dweydari, A. W.; Mee, C. H. B. (1975). "Work function measurements on (100) and (110) surfaces of silver". Physica Status Solidi (a) 27: 223.
**See also Work Function wiki. According to a Washington State University posting, the values for K (2.29) and Na(2.36) are for polycrystalline samples.
Data Reference
Tipler & Llewellyn
Ch 3