In this work, simple solar cells using cuprous oxide were fabricated and characterized. The solar cells in this experiment
used cuprous oxide plate as detecting electrode and copper wires which were woven into a net-shape with a gap size of 2
x 2 cm as a counter electrode. Twenty samples of solar cells were fabricated with oxide layer which were thermally
grown in temperature up to 550 oC. Samples with variations in oxidation time (15 minutes, 30 minutes, 40 minutes, and
45 minutes) and distance between electrodes (2 cm, 3 cm, and 4 cm) with an electrolyte solution of NaCl with molarity
of 2.188 mol/l were produced. The samples were characterized by measuring their V-I curve. For this purpose, a simple,
own-made solar simulator were fabricated and characterized. Using curve fitting technique, parameters such as FF (Fill
Factor), efficiency, open circuit voltage, short circuit current, internal resistance, and performance degradation as a
function of time of the cells were extracted. The result shows optimum efficiency of 4.573. 10-4%, while optimum
oxidation time is 40 minutes and optimum distance between electrodes is 3 cm.
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