Effects of Pb nanosheets substrates on the optical and electrical properties CrSe thin films
Yükleniyor...
Tarih
2023
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Physica Scripta
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Herein the effects of lead nanosheets substrates on the optical and electrical properties of chromium selenide thin films were studied. Chromium selenide thin films were grown by vacuum thermal evaporation technique onto glass and 100 nmthick lead nanosheets substrates. The effects of Pb nanosheets on the structural, morphological, compositional, optical and electrical properties was explored. While films grown onto glass substrates showed compositional stoichiometry forming CrSe2 phase those coated onto Pb substrates preferred the growth CrSe phase. Both films were of amorphous structure and exhibited direct and indirect allowed optical transitions. Pb nanosheets enhanced the optical absorption of chromium selenide in the visible and ultraviolet ranges of light. Formation of films onto Pb nanosheets resulted in band gaps and band tails narrowing and decreased the room temperature electrical conductivity (s) as well. Deep analyses of the s - T variations in the range of 25–340 Kshowed that the electronic transport is dominated by the thermal excitation and variable range hopping of charge carriers. It was observed that Pb nanosheets increased the average hopping energy and hopping range, decreased the density of localized states near the Fermi level and increased the degree of state disorder. The features of glass/CrSe2 and Pb/CrSe films are promising for using then in optoelectronic technology
Açıklama
Anahtar Kelimeler
CrSe2 thin films, Pb nanosheets, optical transitions, electrical conduction,VRH, CrSe2 Thin Films, Pb Nanosheets, Optical Transitions, Electrical Conduction, VRH
Kaynak
Physica Scripta
WoS Q Değeri
N/A
Scopus Q Değeri
Cilt
98
Sayı
Künye
Aljaloud, A. S. M., Qasrawi, A. F., & Alfhaid, L. H. K. (2023). Effects of Pb nanosheets substrates on the optical and electrical properties CrSe thin films. Physica Scripta.
