Synthesis of C:Se (core:shell) nanoparticles via laser ablation on porous silicon for photodetector application

In this research, C:Se (core:shell) nanoparticles(NPs) are laser ablated at various laser energies of 200, 400, 600, 800 and 1000 mJ with 100shots and 1064 nm laser wavelength then deposited on porous silicon (PS). The XRD study showed that C:Se NPs are crystalline and belong to the monoclinic symmetry alpha-phase. Results of the AFM (i.e. atomic force microscope) analysis for PS has shown sponge-like structure, and a 39.76 nm average diameter coordinated in a rod-like shape appearing for C:Se NPs, are watched and electrical characteristics are studied to identify samples. From current-voltage (I-V) measures, the electrical characteristics, like height of the barrier (phi(B)) and ideality factor (n) of Al/PS/Si/Al and Al/C:Se NPs/PS/Si/Al heterojunction have been determined. Finally, a wide variety of wavelengths has increased the efficacy of C:Se NPs/PS photodetectors.

Automated summary

C:Se (core:shell) nanoparticles are produced through laser ablation and deposited on porous silicon. The nanoparticles exhibit crystalline structure and a rod-like shape, showing promising performance on photodetectors. The study also determines electrical characteristics of heterojunctions and the efficacy of the photodetectors.