| ZnO | Zinc oxide |
| Zn | Zinc |
| MEA | Monoethanolamine |
| DEA | Diethanolamine |
| 0.5 MEA | 5 % of monoethanolamine |
| 1 MEA | 10 % of monoethanolamine |
| 0.5 DEA | 5 % of diethanolamine |
| 1 DEA | 10 % of diethanolamine |
| Si | Silicon |
| AlO | Sapphire |
| SiO | Quartz |
| PL | Photoluminescence |
| Zn | Zinc interstitial |
| V | Oxygen vacancy |
| V | Zinc vacancy |