en Research Paper Research Paper <span style="font-size:11pt"><span style="line-height:200%"><span style="font-family:Calibri,sans-serif"><span new="" roman="" style="font-family:" times="">Dual nanocomposites based on metal sulfide nanomaterials with a narrow band gap are favorable candidates for future optoelectronic applications and ionizing ray sensors. In this study, <a name="_Hlk78403548">novel silver-doped zinc sulfide/ cadmium sulfide (</a><a name="_Hlk165762466">ZnS/CdS: Ag</a>)<a name="_Hlk79450687"> nanocomposites </a>were synthesized using the cost-effective solvothermal approach. For the first time, the radiation sensitivity of the newly developed nanocomposite was assessed using a ²⁴¹Am alpha source and ion beam-induced luminescence (IBIL) measurements. The ZnS/CdS: Ag nanocomposite demonstrated significant light emission in the blue-green spectrum when measured at room temperature. When exposed to alpha irradiation, the ZnS/CdS: Ag nanocomposite film displayed exceptional sensitivity compared to pure ZnS or CdS films. The FESEM images revealed a uniform distribution of semi-spherical and rod-shaped nanoparticles, with an average particle size measuring 180 nm. The results from XRD and EDX demonstrated distinct peaks corresponding to ZnS, CdS, and associated elements within the nanocomposite. The existence of several groups within the nanocomposite was confirmed through Fourier transform infrared spectroscopy. Evaluations revealed that the optical quality of the ZnS/CdS: Ag nanocomposite showed enhancement in comparison to pure ZnS and CdS. The results suggest that the ZnS/CdS: Ag nanocomposite film holds great promise for applications in optoelectronic devices and detection technologies.</span></span></span></span><br> &nbsp; ,Ag dopant,Dual nanocomposite,Luminescence,Optical properties,Scintillation response 168 179 http://ijmse.iust.ac.ir/browse.php?a_code=A-10-5542-2&slc_lang=en&sid=1 Maryam Hajiebrahimi m.hajiebrahimi@semnan.ac.ir 1800319475328460019329 1800319475328460019329 No Faculty of Materials & Metallurgical Engineering, Semnan University, Semnan, Semnan, Iran Sanaz Alamdari s.alamdari@semnan.ac.ir 1800319475328460019330 1800319475328460019330 No Department of Nanotechnology, Faculty of New Sciences and Technologies, Semnan University, Semnan, Iran Omid Mirzaee o_mirzaee@semnan.ac.ir 1800319475328460019331 1800319475328460019331 Yes Faculty of Materials & Metallurgical Engineering, Semnan University, Semnan, Semnan, Iran