Experimental and theoretical study of new kesterite Cu2NiGeS4 thin film synthesized via spray ultrasonic technic

Unraveling the microstructural and optoelectronic properties of solution-processed Pr-doped SrSnO3 perovskite oxide thin films

“…23 The (SIC) approach is normally utilized to acquire a more realistic description of the disordered local moments of the materials under investigation as indicated before. 20,22 For the parameterization of the exchanged energy, local density approximation (LDA) was employed using SIC included in the KKR-CPA-SIC-LDA package as implemented in MACHIKANEYAMA2002. 24 Also, 500 K -points in the whole first Brillouin zone were taken into account and the scalar relativistic approximation was incorporated as well.…”

“…The two solutions were mixed under vigorous magnetic stirring at 70 C for 2 h, resulting in very clear solutions. The solutions were transferred to the deposition chamber equipped with the ultrasonic spray set-up (SONAER Ultrasonics) set at a frequency of 130 kHz and an applied power of 2.8 W. [20][21][22] The selected substrates were the silicon wafer Si (100) with the dimensions of 1-1.5 cm. The substrates were ultrasonically cleaned with distilled water, ethanol and acetone consecutively for 15 min and nally dried in an air stream.…”

“…19 A limited number of reports have employed chemical methods; for example, the polymeric precursor method. 20 Commonly, the previously mentioned synthesis routes utilize a complex and multi-step growth procedure, where complex, non-practical and expensive methods are employed alongside high annealing temperature and expensive substrates. In the present study, an easy-to-manipulate and cost-effective chemical solution deposition method (spray coating) has been adopted, allowing fast deposition onto a conductive substrate (Si (100) substrate, in our case), and its effect on the quality of the as-synthesized samples has been evaluated.…”

“… 19 A limited number of reports have employed chemical methods; for example, the polymeric precursor method. 20 …”

Revealing the impact of strontium doping on the optical, electronic and electrical properties of nanostructured 2H-CuFeO2 delafossite thin films

“…For doping, strontium nitrate (Sr(NO 3 ) 2 , 98% purity) was added to the precursor solutions in two different concentrations (x ¼ 3 and 5 at%). The solution was transferred to a deposition chamber equipped with an ultrasonic spray set-up (SONAER-Ultrasonics) set at a frequency of 130 kHz and an applied power of 2.8 W. [27][28][29] Double-side polished fused-silica-quartz glass sheets (1 cm  1.5 cm) were selected as the substrates. The substrates were ultrasonically cleaned with distilled water, ethanol, and acetone consecutively for 15 minutes and nally dried in an air stream.…”