TY - JOUR
T1 - Improving the conductivity of cuprous oxide thin film by doping Calcium via feasible nebulizer spray technique for solar cell (FTO/ZnO/Ca-Cu2O)
AU - Jacob, S. Santhosh Kumar
AU - Kulandaisamy, I.
AU - Valanarasu, S.
AU - Arulanantham, A. M.S.
AU - Shkir, Mohd
AU - Kathalingam, A.
AU - Soundaram, N.
N1 - Publisher Copyright:
© 2019 IOP Publishing Ltd.
PY - 2019
Y1 - 2019
N2 - Calcium-doped cuprous oxide (Ca:Cu2O) thin filmswere effectively coated onto glass substrate by nebulizer spray techniquewith different doping percentage (0%, 1%,2%and 3%).X-ray beam diffraction confirms the polycrystalline nature of the prepared Cu2Othinfilm.An increase in size of the crystallites from11 nmto 29nmwas observed for the increase of doping concentration.AFMstudy exposed a smooth surfacewith evenly dispersed grains and the change in roughness on the filmsurface was also noticed.Opticalmeasurements showed the band gap varied from2.40 eV to 2.15 eV for undoped and doped films.All the filmswerewith narrowemissions band at 630 nmfor excitation at 450 nmfromthe PL spectra.Hall Effectmeasurements showed that the prepared films have p-type conducting nature with resistivity value of 0.453 × 102Ωcm and the carrier density of 21 × 1019 cm-3 for the3%Ca-doping concentration. Solar cell characteristics such as an open circuit voltage (Voc) of 0.30mV, fill factor (FF) of 0.33 and conversion efficiency (n) of 0.45%were attained for 3%Ca doped Cu2Ofilm.
AB - Calcium-doped cuprous oxide (Ca:Cu2O) thin filmswere effectively coated onto glass substrate by nebulizer spray techniquewith different doping percentage (0%, 1%,2%and 3%).X-ray beam diffraction confirms the polycrystalline nature of the prepared Cu2Othinfilm.An increase in size of the crystallites from11 nmto 29nmwas observed for the increase of doping concentration.AFMstudy exposed a smooth surfacewith evenly dispersed grains and the change in roughness on the filmsurface was also noticed.Opticalmeasurements showed the band gap varied from2.40 eV to 2.15 eV for undoped and doped films.All the filmswerewith narrowemissions band at 630 nmfor excitation at 450 nmfromthe PL spectra.Hall Effectmeasurements showed that the prepared films have p-type conducting nature with resistivity value of 0.453 × 102Ωcm and the carrier density of 21 × 1019 cm-3 for the3%Ca-doping concentration. Solar cell characteristics such as an open circuit voltage (Voc) of 0.30mV, fill factor (FF) of 0.33 and conversion efficiency (n) of 0.45%were attained for 3%Ca doped Cu2Ofilm.
KW - AFM
KW - Ca-doped cuprous oxide
KW - Nebulizer spray deposition
KW - Solar cells
KW - UV-visible spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=85061993987&partnerID=8YFLogxK
U2 - 10.1088/2053-1591/aafb18
DO - 10.1088/2053-1591/aafb18
M3 - Article
AN - SCOPUS:85061993987
SN - 2053-1591
VL - 6
JO - Materials Research Express
JF - Materials Research Express
IS - 4
M1 - 046405
ER -