Specifications:
Some examples of the thicknesses for the GOS ceramic scintillation layer of the GOS thin films include (the thicknesses stated below are the thicknesses of the GOS scintillator layer alone, do not contain the PET substrates and protective layer):
| GOS Scintillation Layer | Thickness (μm) |
| Type 1 | 150 |
| Type 2 | 280 |
| Type 3 | 350 |
A GOS Scintillation Thin Film is a thin sheet consisting of a scintillation layer of GOS ceramics, a PET substrate layer, and a protective PET layer on top. Gadolinium Oxysulfide (GOS) ceramic, chemical formula Gd2O2S, is an excellent scintillation material that offers high light yield, large density, and low afterglow. The GOS ceramic thin films are often used in combination with scintillation arrays made of other scintillator material (e.g. Thallium doped cesium iodide scintillator arrays) to realize dual-energy X-ray detection utilizing two distinct energy levels of X-rays, where the GOS thin films are stacked together with the scintillation arrays and filters. The GOS thin films are optimized to absorb and convert lower-energy X-rays, and the other constituent scintillator arrays are optimized to detect higher-energy X-rays.
Hangzhou Shalom EO offers a series of GOS scintillator products, including GOS scintillation crystals (terbium-activated GOS and praseodymium-activated GOS), pixelated GOS scintillation arrays, and GOS scintillator thin film, which is specified on this page. We can provide custom GOS thin films of different sizes and thicknesses tailored to meet your needs.
The manufacturing technique of Shalom EO’s GOS ceramic scintillation thin films (as in the case of producing GOS: Tb thin films) is as follows:
1. Using the coprecipitation method to produce the mixed powder of Gd2O3 and Tb2O3;
2. High-temperature sulfurization sintering forms GdSO grains;
3. Add adhesives, press the material into pieces, bound the pieces together with the PET substrates;
4. Stick a protective layer onto the light-exiting surface;
5. Obtain Gd2OS2:Tb thin films, the emission peak is 550nm.
Figure 1. The diagram showing the structure of Shalom EO's GOS scintillation thin films
