en نانوفوتونیک و ساختارهای نانویی Nanophotonics and Nanostructures پژوهشي Research <p align="justify" lang="es-VE">Ti-doped tungsten disulfide (WS2) nanosheet-semiconductor is studied for thermo- optical and electronic properties. Thermal diffusivity (D) thermal conductivity (&kappa;) and absorbance were determined as a function of Ti- dopant (0, 7, 14, and 28%). The research focused on the effect of different Ti-dopant concentrations, and we tried to evaluate the thermal parameters using photohermal lens technique as a simple, non-contacting method. The results show an increase in the values of D by 5 times with an increment of Ti-dopant from 0% to 28%. The addition of Ti did not produce any additional phase in the material, although, the separation of the crystallographic planes reduced, indicating the presence of the Ti atoms in the crystal structure.<font face="Times New Roman, serif"><font size="3"> </font></font></p> WS2 nanosheet, thermal lens, thermal diffusivity.  9 18 http://ijop.ir/browse.php?a_code=A-10-873-1&slc_lang=en&sid=1 Fatima Matroodi matroodi@gmail.com 10031947532846004431 10031947532846004431 Yes Physics Department, College of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran & Center for Research on Laser and Plasma, Shahid Chamran University of Ahvaz, Ahvaz, Iran Ali Ahmadi aliahmadi801@gmail.com 10031947532846004432 10031947532846004432 No Physics Department, College of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran Morteza Zargar Shoushtari m_zargar@scu.ac.ir 10031947532846004433 10031947532846004433 No Physics Department, College of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran Humberto Cabrera hcabrera@ictp.it 10031947532846004434 10031947532846004434 No Optics Lab, The Abdus Salam International Centre for Theoretical Physics (ICTP), Strada Costiera 11,Trieste 34151, Italy