Szczegóły publikacji
Opis bibliograficzny
Rational design of the electronic structure of CdS nanopowders / Wojciech ZAJĄC, Agnieszka RÓŻYCKA, Anita TRENCZEK-ZAJĄC // Inorganic Chemistry ; ISSN 0020-1669. — 2023 — vol. 62 iss. 28, s. 10955–10964. — Bibliogr. s. 10962–10964, Abstr. — Publikacja dostępna online od: 2023-06-29
Autorzy (3)
Dane bibliometryczne
| ID BaDAP | 147867 |
|---|---|
| Data dodania do BaDAP | 2023-09-08 |
| Tekst źródłowy | URL |
| DOI | 10.1021/acs.inorgchem.3c00935 |
| Rok publikacji | 2023 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Inorganic Chemistry |
Abstract
In this study, varioustechniques, such as energy-dispersive X-rayspectroscopy (EDX), X-ray diffraction (XRD), Raman spectroscopy, andspectrophotometry, were used to analyze the properties of nanometricCdS particles synthesized with varying precursor concentrations. EDXanalysis revealed the nonstoichiometric composition manifested byan increase in the Cd/S ratio from 1.02 up to 1.43 with increasingprecursor concentration. The growth of lattice parameters and unitcell volume accompanying preferential crystallization of the hexagonalphase along with an increasing Cd/S ratio was confirmed by XRD analysis.This indicated the presence of interstitial cadmium in nonstoichiometricCd(1+x )S. The formation of shallow Cd-i donor levels below the bottom edge of the conduction bandimpacts the bang-gap energy; a decrease from 2.56 to 2.21 eV alongwith increasing nonstoichiometry was observed. This is accompaniedby a widening of the range of absorption of light, which creates conditionsthat can lead to an increase in the efficiency of redox reactionsin photochemical processes.
