Abstract
The morphological, structural, and optical characterization of the SnS thin film deposited by the ultrasonic spray pyrolysis (USP) method was carried out. Simple and inexpensive commercial ultrasonic nano‐mist device was used to deposit SnS thin film. The solution procedure was developed to obtain highly oriented SnS thin film. The SnS thin film exhibited an orthorhombic crystal structure with a strong (111) preferred orientation. The crystallite size was calculated as 56 nm. A direct band gap of 1.21 eV was determined from the Tauc plot. Raman spectroscopy was performed to identify the phases present in the films. The FTO/TiO
2
/SnS/Au solar cells were fabricated. The ideality factor and saturation current of the device were calculated as 3.02 and 2.59 × 10
−6
A, respectively. The series resistance of 370 Ω was obtained using Cheung’s method. The photovoltaic parameters of the champion cell with a power conversion efficiency (PCE) of 0.388% were found to be
J
sc
= 6.50 mA/cm
2
,
V
oc
= 0.207 V, and
FF
= 28.9%. In addition, the photodiode performance of the cell was evaluated.