TY - JOUR
T1 - Spectroscopic and electrical analysis of spray deposited copper oxide thin films
AU - Prakash, Adithya
AU - V S, Ganesha Krishna
AU - Moger, Sahana Nagappa
AU - Mahesha, M. G.
N1 - Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/8
Y1 - 2022/8
N2 - Copper Oxide (CuO) in thin film form is an excellent candidate for absorber layer in solar cells due to their adequate band gap, minimal cost, and large abundance. In this work, CuO thin films were grown on glass substrates by spray pyrolysis technique. The impact of substrate temperature and precursor concentration on the structural, morphological, optical, and electrical properties of the films were thoroughly investigated. The formation of polycrystalline tenorite phase CuO was confirmed by X-ray diffractogram. FESEM showed morphological homogeneity of the films and EDAX validated the presence of O and Cu in the samples. Spectrophotometric experiments revealed that CuO films exhibit a considerable absorption in the visible range, which gradually decreased after 800 nm. The film's estimated band gap was near to the solar absorption band gap, indicating that they can be employed as absorber layers in solar cells. The formation of tenorite phase CuO was further confirmed by Raman analysis. The optical emission properties of the CuO films were studied by photoluminescence spectroscopy. X-ray Photoelectron Spectroscopy revealed the presence of Cu2O in minor fraction along with CuO. Hall measurements were done to study the electrical properties like resistivity, mobility, and carrier density.
AB - Copper Oxide (CuO) in thin film form is an excellent candidate for absorber layer in solar cells due to their adequate band gap, minimal cost, and large abundance. In this work, CuO thin films were grown on glass substrates by spray pyrolysis technique. The impact of substrate temperature and precursor concentration on the structural, morphological, optical, and electrical properties of the films were thoroughly investigated. The formation of polycrystalline tenorite phase CuO was confirmed by X-ray diffractogram. FESEM showed morphological homogeneity of the films and EDAX validated the presence of O and Cu in the samples. Spectrophotometric experiments revealed that CuO films exhibit a considerable absorption in the visible range, which gradually decreased after 800 nm. The film's estimated band gap was near to the solar absorption band gap, indicating that they can be employed as absorber layers in solar cells. The formation of tenorite phase CuO was further confirmed by Raman analysis. The optical emission properties of the CuO films were studied by photoluminescence spectroscopy. X-ray Photoelectron Spectroscopy revealed the presence of Cu2O in minor fraction along with CuO. Hall measurements were done to study the electrical properties like resistivity, mobility, and carrier density.
UR - http://www.scopus.com/inward/record.url?scp=85133291038&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85133291038&partnerID=8YFLogxK
U2 - 10.1016/j.mtcomm.2022.103926
DO - 10.1016/j.mtcomm.2022.103926
M3 - Article
AN - SCOPUS:85133291038
SN - 2352-4928
VL - 32
JO - Materials Today Communications
JF - Materials Today Communications
M1 - 103926
ER -