TY - JOUR
T1 - Annealing assisted enhancement in photo response of PV deposited CdS thin films
AU - Nagappa Moger, Sahana
AU - Kumar, Pawan
AU - Rao, Gowrish K.
AU - M G, Mahesha
N1 - Funding Information:
The authors are grateful to UGC DAE CSR , Indore, Govt. of India ( CSR-IC-MSRSR-11/CRS-219/2017-18/1300 ) for financial assistance.
Funding Information:
The authors are grateful to UGC DAE CSR, Indore, Govt. of India (CSR-IC-MSRSR-11/CRS-219/2017-18/1300) for financial assistance.
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/5
Y1 - 2022/5
N2 - CdS films were deposited on glass substrates by thermal evaporation method at room temperature. The effect of air annealing on structural, optical, and electrical properties of the films were characterized by XRD, UV–Visible spectroscopy, Hall effect and I-V measurements. The structural parameters crystallite size and residual stress showed an inverse relation between them. After annealing, the absorption edge was red shifted. Different models that use band gap of the films as input parameter were adopted to calculated refractive indices of the films. Annealing has resulted in the enhancement of carrier mobility. Finally, the spectral and time response of the pristine and annealed CdS films have been studied in detail and response time was found to be in the microsecond range. Annealing has reduced the response time considerably and made the films suitable for photodetector in the visible range.
AB - CdS films were deposited on glass substrates by thermal evaporation method at room temperature. The effect of air annealing on structural, optical, and electrical properties of the films were characterized by XRD, UV–Visible spectroscopy, Hall effect and I-V measurements. The structural parameters crystallite size and residual stress showed an inverse relation between them. After annealing, the absorption edge was red shifted. Different models that use band gap of the films as input parameter were adopted to calculated refractive indices of the films. Annealing has resulted in the enhancement of carrier mobility. Finally, the spectral and time response of the pristine and annealed CdS films have been studied in detail and response time was found to be in the microsecond range. Annealing has reduced the response time considerably and made the films suitable for photodetector in the visible range.
UR - https://www.scopus.com/pages/publications/85122621011
UR - https://www.scopus.com/pages/publications/85122621011#tab=citedBy
U2 - 10.1016/j.optlastec.2022.107868
DO - 10.1016/j.optlastec.2022.107868
M3 - Article
AN - SCOPUS:85122621011
SN - 0030-3992
VL - 149
JO - Optics and Laser Technology
JF - Optics and Laser Technology
M1 - 107868
ER -