**4. Conclusions**

The proposed dosimeter thin films were prepared successfully by the hydrothermal (autoclave) method. The structural and optical properties were studied. The PL spectra showed two peaks that included the near bandgap edge emission (3.26 eV) and highintensity defect in the visible region with a wide range (2.25 to 1.55 eV). The dosimetric properties were investigated. TL optimum intensity was found at 0.5 mol% of Ag for a delivered dose of 4 Gy, with the glow curve showing a single peak at 270 ◦C. The TL sensitivity was normalized to the mass of the thin films and found to be two times that of the TLD 100 chips. Ag-doped ZnO thin films showed good reproducibility, and the results of PDD also confirmed an agreemen<sup>t</sup> with the case of TLD 100. However, it can be concluded that the advantage is that the glow curve's growth was acquired immediately with different heating rates and that the sensitivity is more than that of TLD 100. The limitations of this work are that the thin films' synthesizing conditions were a crucial effect on the shape and position of the glow curve and optical fading. These thin films were strongly affected by sunlight. The study demonstrated that the synthesized sample exhibits suitable TL properties for radiation monitoring.

**Author Contributions:** H.A.T., conceptualization and writing—original draft preparation; N.A.K., supervision, funding and review; A.K.I., supervision and funding acquisition; S.A., writing—review and editing; M.A.S., methodology; A.B., validation. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research was funded by UTM Professional Development Research University (Postdoctoral Fellowship Ref. [No: PY/2022/03183] and an FRGS gran<sup>t</sup> (vot num: [R.J130000.7854.5F236, Ref No: PY/2019/01269]. And also funded by Universiti Sains Malaysia (USM) [1001/PFIZIK/811345].

**Data Availability Statement:** The data presented in this study are available on request from the corresponding author.

**Acknowledgments:** The authors are thankful to UTM Professional Development Research University. The authors extend their appreciation to the Biophysics Laboratory, Medical Physics Laboratory and lab of Nano-Optoelectronics Research and Technology Laboratory (NOR Lab) staff members (https://fizik.usm.my/index.php/facilities/research-laboratory/nor-lab), USM, wherein this work was carried out.

**Conflicts of Interest:** The authors declare no conflict of interest.
