Nanocrystalline ZnSe thin films prepared by solution growth technique for photosensor application

Zinc selenide (ZnSe) thin films were deposited onto the glass substrates by solution growth technique (SGT). Triethanolamine (TEA) was used as a complexing agent for uniform deposition. Deposition parameters were optimized and elemental composition was confirmed by energy dispersive X-ray analysis technique (EDAX). The SEM, AFM and XRD pattern revealed that as-deposited thin films were uniformly deposited by nanocrystalline grains distributed over the entire glass substrate. Transmission spectra showed high transmission (∼55%) with direct optical band gap energy equal to 2.71 eV. The I–V characteristic showed good photoresponse, suitable for photosensor applications.