Structural and Optical Properties of Cadmium Sulfide (CdS) Nano‐Powder

Abstract

The field of nanomaterials has been extensively identified as one of the most promising and rapidly emerging research areas. In this paper, the structural and optical properties of cadmium sulfide (CdS) powder samples are studied. Undoped CdS powder samples are prepared and characterized by X-ray diffraction, Raman spectroscopy, and UV-visible spectra. The structural properties are analyzed using X-ray diffractometry. The estimated crystallite size of the sample is 28.2 nm calculated from the FWHM of the most intense peak (1 0 1). The optical properties are studied by the ultraviolet-visible absorption spectrum. It is evident from UV-visible absorption spectra that the optical band-gap of the CdS sample is 2.27 eV which is estimated using the Tauc formula.

Unrevealing the potential of multicomponent metal-ion incorporation and sulfide modification in cobalt oxide for efficient water oxidation

“…2b). 35,40 Likewise, in CdCoS@CuCoS/C-NCS, the vibrational modes for CuS at 285.1 and 485.2 cm À1 were the characteristics peaks for Cu-S bond (Fig. 2b).…”

“…The diffraction peaks of CdS appeared at 2y degrees of 23.9, 27, 28.5, 37.09, 42.8, 51.9, and 53.6, belonging to the (100), ( 002), ( 101), ( 102), ( 110), ( 103), ( 200), (112), and (201) planes respectively. 35 The diffraction peaks observed at degree angles of 27.8, 29.1, 32.1, 33.4, 49.9, 53.5, and 59 were found to have characteristics of CuS and were assigned to the indices (101), (102), ( 103), (006), (110), (108), and (116), respectively (JCPD no. 01-079-2321).…”

Enhancing the Photovoltaic Performance of Cd(1−x)ZnxS Thin Films Using Seed Assistance and EDTA Treatment

“…The blue shift of the band edge is desirable as it suggests an increase in th gap of the thin film. The optical band gap (Eg) values of the CdS films were obtained by extrapolati linear (αhυ) 2 vs. hυ plots (Figure 3a) derived from the Stern relation [29][30][31][32][33][34]:…”

“…Out of th different types of films grown, the highest optical band gap of 2.50 eV (Figure 3) w tained in ED/CBD + EDTA-Cd(1 − x)ZnxS. The increase in optical band gap can be rela the smaller crystallite size, as shown in Table 2, as well as the splitting of the tail The optical band gap (E g ) values of the CdS films were obtained by extrapolating the linear (αhυ) 2 vs. hυ plots (Figure 3a) derived from the Stern relation [29][30][31][32][33][34]:…”