Figure 10.
The image shows a graph plotting current in milliamps against voltage in volts. The main graph features a curve that begins at 0 and rises sharply, indicating a threshold at 0 volts before increasing smoothly. An inset graph is located at the top right, illustrating a noticeable dip in current as voltage approaches 0, showing both positive and negative current values ranging from negative 10 to positive 2 milliamps. Both graphs are clearly labelled, and the main graph includes circular data points connected by a line. A legend indicates the data pertains to the dark condition. The axes are marked clearly, facilitating easy interpretation of the data trends.I–V characteristic of CZTS thin films deposited with sol-gel spin-coating on ITO substrate