Fabrikasi dan karakterisasi solar cell sederhana menggunakan oksida tembaga dengan counter electrode berbentuk jaring = Fabrication and characterization of simple solar cell using cuprous oxide with net-shaped counter electrode

Basuki, Stefanus (2014) Fabrikasi dan karakterisasi solar cell sederhana menggunakan oksida tembaga dengan counter electrode berbentuk jaring = Fabrication and characterization of simple solar cell using cuprous oxide with net-shaped counter electrode. Bachelor thesis, Universitas Pelita Harapan.

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Abstract

In this research, 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 2x2 cm as a counter electrode. The cuprous oxide was chosen due to it's efficiency which is comparable to silicon for solar cell and can be fabricated by simple technology. The solar cell's output current and voltage were measured in a simple solar simulator which was also fabricated for this experiment, in order to provide a constant optical power for accurate calculation of efficiency. Several kinds of halogen lamps was chosen as the light source in the solar simulator because of their similarities with sunlight. In this experiment, 20 samples of solar cells were fabricated with oxide layer which were thermally grown in temperature up to 550 degree Celcius. 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 NaCl with molarity of 2.188 mol/l were produced. The samples were characterized by measuring their V-I curve. With the 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 were extracted. The result shows optimum efficiency of 4.573. 10 -4%, while optimum oxidation time is 40 minutes and optimum value space between electrodes is 3 cm. / Pada penelitian ini dilakukan fabrikasi dan karakterisasi solar cell sederhana menggunakan oksida tembaga. Fabrikasi solar cell pada percobaan ini menggunakan bahan dasar lempeng oksida tembaga dan kawat tembaga yang dianyam berbentuk jaring dengan lebar celah 2 x 2 cm sebagai counter electrode. Oksida tembaga dipilih menjadi bahan dasar solar cell karena alasan utama memiliki nilai efisiensi yang comparable dengan solar cell silikon dan bisa difabrikasi dengan teknologi yang sederhana. Solar cell yang difabrikasi diukur arus dan tegangan keluarannya di dalam sebuah solar simulator sederhana, yang juga difabrikasi untuk percobaan ini, sehingga menghasilkan daya optik yang konstan yang memungkinkan perhitungan nilai efisiensi secara akurat. Sumber cahaya dalam solar simulator sederhana berupa beberapa jenis lampu halogen yang dipilih karena memiliki kemiripan dengan sifat-sifat cahaya matahari. Dalam pekerjaan ini dibuat 20 sampel solar cell dengan oksida yang ditumbuhkan secara termal dalam suhu maksimal 550 derajat Celcius. Dilakukan variasi lamanya oksidasi (15 menit, 30 menit, 40 menit, dan 45 menit) dan jarak antar elektroda (2 cm, 3 cm. dan 4 cm) dengan larutan elektronit NaCl dengan moralitas 2,188 mol/l. Sampel-sampel yang dibuat dikarakterisasi untuk diukur kurva V-1. Dengan teknik curve fitting diekstrasi parameter FF (Fill Factor), efisiensi, tegangan open circuit, arus short circuit, tahanan dalam, dan degradasi performa sebagai fungsi waktu dari sampel-sampel tersebut. Hasilnya menunjukkan nilai efisiensi optimum 4,573. 10 -4%, dengan lama waktu oksidasi optimum 40 menit dan jarak antar elektroda optimum 3 cm.

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