Altering NH4OH concentration in producing chemical bath deposited CdS to steadily support electrodeposited CdTe

Development of chemical bath deposited (CBD) CdS to steadily support the electrodeposited (ED) CdTe, by changing the volume of NH4OH, a pH adjuster, in the CBD bath is reported here. The optimal volume of NH4OH, which is the controlling parameter of interest, was identified based on the optical, electrical, structural, and morphological properties of the CdS developed. The sample developed exhibits the band gap energy of 2.32 eV with light transmittance >80% (500-900 nm). The photo-electrochemical cell and Mott-Schottky studies revealed n-type conductivity, open circuit voltage (V-OC) of 0.529 V, and short circuit current density (J(SC)) of 12.290 mu A/cm(2) at the CdS/electrolyte junction while the X-ray diffraction data and phase analysis revealed the formation of a blended hexagonal/cubic structures. Further, the scanning electron microscopic and the energy dispersive X-ray spectroscopic studies elucidated a well-compact grain arrangement and agreed with the theoretical chemical composition (1:1) of CdS respectively.

Automated summary

The study focuses on using CBD to grow CdS to support the growth of CdTe by changing the volume of NH4OH. The optimal volume of NH4OH was determined based on the properties of the developed CdS. The CdS developed exhibited a band gap energy of 2.32 eV with n-type conductivity at the CdS/electrolyte junction and a blended hexagonal/cubic structure.