CURRENT-VOLTAGE CHARACTERISTICS OF SOLAR CELLS p-n JUNCTION ZnO AND TiO2 PARAREL ON Cu2O LAYER

Abstract

Current-Voltage Characteristics of solar cells p-n junction ZnO and TiO2 parallel in the Cu2O layer has been determined using solar irradiation. Metal oxide has been used as a semiconductor material, such as ZnO and TiO 2 is an n-type semiconductor. The material has gap energy of 3.37 eV and 3.2 eV. Thermal oxidation is applied to commercial Cu plates for 60 minutes to produce Cu2O layers as p-type semiconductors. The process varies in temperature, namely 300, 400, and 500 °C. The process of thermal oxidation on Cu plates at a temperature of 300 °C increases the impurity in the Cu2O layer. The impurity layer is CuO. Then the CuO layer formed decreases with increasing temperature thermal oxidation. CuO layer increases the efficiency of solar cells p-n junction TiO2-ZnO parallel in the layer Cu2O. The results of measurements with sunlight showed that the TiO2-ZnO/Cu2O (300) samples had the highest solar cell efficiency, which was 0.28 %.

TRANSESTERIFICATION OF PALM OIL USING THE TiO2/nano-MONMORILLORITE (nano-MMT) COMPOSITE CATALYST FROM ACEH TAMIANG BENTONITE IN THE PRODUCTION OF BIODIESEL

“…Apart from ZnO, TiO2 is also a semiconductor and photocatalyst material. 10 The TiO2/nano-MMT composite catalyst from Aceh Tamiang, however, has not been studied in terms of the transesterification process for biodiesel production from palm oil. This article reports biodiesel production using a TiO2/nano-MMT composite catalyst from Aceh Tamiang natural bentonite from palm oil.…”