endobj Experiments with Solar Cell (from Solar Kit) Zdeňka Koupilová1 Solar energy is more and more used in everyday life. (Perlin, 2004) A solar cell is a solid electrical device that converts solar energy directly to electricity. In the first part of the lab we wanted to see how changing the intensity of light affected the amount of electricity produced by the solar cell. The only thing that really surprised me about this experiment was that there wasn’t a more dramatic difference between the intensities of red and blue light, but I suppose that has something to do with the opacity of the gels. Using photovoltaic cells (also called solar cells), solar energy can be converted into electricity. The solar cell should be exposed to sun light before using it in the experiment. This study investigated the electrical performance of three PV modules with cells connected in different configurations to address nonuniform illumination effect. endobj Calculating the power of a solar cell. <>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]>>/MediaBox[ 0 0 595.32 841.92]/Contents 80 0 R /Group<>/Tabs/S>> It would be a natural assumption that for solar cell performance visible light is necessary. <>/ExtGState<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]>>/Annots[ 57 0 R ]/MediaBox[ 0 0 595.32 841.92]/Contents 58 0 R /Group<>/Tabs/S>> The band gap of polycrystalline silicon is 1.1 ev. Basically a solar cell is a device that directly converts sun light into the electricity. Solar V cell I Use the flux meter to determine the input intensities (be sure you understand the scale). During the Solar Cell Energy lab three flexible solar cells were combined in series and exposed to solar radiation at different angles in one axis of rotation. 12 0 obj Solar cells produce direct current (DC) electricity and an inverter can … 6 0 obj The aim of this study is to develop a model for solar photovoltaic cell based on mathematical expression. Solar cells, one of the safest and cheaper ways to generate electricity, have been studied to a great extent since 1954. 5 0 obj Required fields are marked *. A solar cell is basically a semiconductor p-n junction device. The large surface area indicated in light blue is exposed to incident light energy. The Band Gap Of Polycrystalline Silicon Is 1.1 Ev. Solar Cell Experiment Introduction: Solar Cells convert light energy to electrical energy, so are transducers. For the second half of the experiment, we used four different colored gels to look at how color has an impact on light intensity. When the energy of the incident photon is larger than the band gap, the photon can be absorbed by the semiconductor to create an electron-hole pair. SOLAR CELLS: A CASE STUDY OF EFFICIENCY & THE EFFECT ON COST . Solar V cell I Use the flux meter to determine the input intensities (be sure you understand the scale). As is apparent from the graph, the farther away the light source is from the solar cell, the less intensity the cell records. Aziz Alaleit . For a more perfect experiment, if I really wanted to look at how red light and blue light compare in terms of intensity, I would pick gels that all have the exact same amount of opacity. There are several approaches that have been proposed to reduce the effect of shadows on a solar PV array output power: Bypass diodes are connected across shadowed cells to pass the full amount of current while preventing damage to the solar cell. Lab 8: Solar Cell Experiment In this experiment, we were asked to use a solar cell, a light, a ruler, and some colored gels to determine different aspects of light intensity. I feel like the part of the experiment with the colored gels was somewhat inconclusive. Effect of temperature on a solar panel - results Carrying out the experiment. Therefore people have started using solar panels much often to produce electricity. A solar cell experiment was performed using a commercial polycrystalline silicon solar cell with an active atea (10 cm 5 cm). Solar cells do not produce greenhouse gases, which are very harmful for our planet. 11 0 obj That is definitely something that can be further explored. The original study demonstrated the production of two electrons from one photon, but it did so in an organic photovoltaic cell, which is less efficient than a silicon solar cell. The local hot spot in the shaded part of the solar PV array can damage the solar Cells. endobj Fifty years later a scientist named Charles Fritts created the first real solar cell using junctions by coating the semiconductor with a nearly transparent layer of gold. The theory of solar cells explains the process by which light energy in photons is converted into electric current when the photons strike a suitable semiconductor device. A solar cell is a semiconductor PN junction diode as shown in figure 1. endobj Disclosure: This is a paid campaign with Camp Invention, all opinions are 100% my own. We had red, blue, orange, and light pink, and of course white light without a gel. Assignment 7.2: Self-Study on Nuclear Energy, Assignment 10.2: The Keystone XL Pipeline. The theoretical studies are of practical use because they predict the fundamental limits of a solar cell, and give guidance on the phenomena that contribute to losses and solar cell efficiency. My partner and I started looking at the distance between our flashlight and our solar cell. Your email address will not be published. Solar cells are usually coated with anti-reflective materials so that they absorb the maximum amount of light energy. Fig. <>/Metadata 127 0 R >> These solar cells are fabricated using a combination of thin film deposition and etching techniques. We attempted to incorporate this data into our graph, but the data point made the trendline look as though it didn’t match at all so we removed it from our graph. This was because I tried to setup before dawn and things began to gather dew. In our experiment, the solar cell and motor had V = 1.1 volts and I = 0.11 amps. Purpose/Hypothesis In our solar cell experiment, we were tasked with experimenting with solar panels and how they function. <>/ExtGState<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]>>/MediaBox[ 0 0 595.32 841.92]/Contents 90 0 R /Group<>/Tabs/S>> Watch this video.The Physics Guide is a free and unique educational YouTube channel. Most concentrating systems that are being used for photovoltaic (PV) applications do not illuminate the PV module uniformly which results in power output reduction. A solar cell is a semiconductor PN junction diode as shown in figure 1. This arrangement is referred to as having the meter in series. Solar Cell Experiment 2091 Words | 9 Pages. <>stream endobj Figure 2 - A monocrystalline silicone solar cell . ��Kd�b�F( Normally no external bias is applied to the cell. 4 0 obj Solar energy can be part of a mixture of renewable energy sources used to meet the need for electricity. The power of a solar cell is the product of the voltage across the solar cell times the current through the solar cell. I tested all the tracking and data logging software routines before running the experiment outside with the real tracker hardware.I setup the equipment outside once the day began to warm. Red light has a much longer wavelength than blue light. We did get a small reading, but it was negligible. Luckily, it was still accurate enough that the experiment worked out for us. The characteristics of materials-based systems are, however, neither simple nor uncorrelated. 2. A resistance in the cell circuit should be introduced so that the current does not exceed the safe operating limit. 8 0 obj Solar Science Experiments for Kids are a fun way to teach children about renewable energy sources. <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]>>/MediaBox[ 0 0 595.32 841.92]/Contents 81 0 R /Group<>/Tabs/S>> The theory of solar cells explains the process by which light energy in photons is converted into electric current when the photons strike a suitable semiconductor device. Nowadays, this device is very popular, because people have become more concerned about environmental problems. 2- Connect the solar cell with the electric motor and a DMM to measure current. 7 0 obj How do you do Solar Cell Experiment in your lab? 668 N. … 1 0 obj VIVA VOICE QUESTIONS: 1. James et al. To prepare for the axles, wheels, and gear, cut out a small piece of the “car” base near the front tire. For our … The following experiment was performed using a commercial polycrystalline silicon solar cell with an active area of 8.5 cm X 8.5 cm. <>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]>>/MediaBox[ 0 0 595.32 841.92]/Contents 77 0 R /Group<>/Tabs/S>> 3- … The fabrication portion of the lab endobj … endobj Be sure that your data will ���tvÿ�3�m����wM��� ���8��ˀ�@?`�� ��{�Q��������Q������خy�ݒ����ԝ�Sw�Nݩ;u��ԝ�Sw�Nݩ;u��ԝ�Sw�N�_�A2����������L�'�Л������XY:�`�Y��Ne�X-[�nb���~���K���::�^�h��z��(VΪQ�����Z]��-c:'���:�c �S|$�2��OF��i�78�@O`;�� ��y�����Fu�z��5�.S�ԅ���zH�B=�~�~�~�~�~���N�o��&�b9,� c#�HVĊY)��a3X#�ǖ���&��+�����SyO>���Z>�/��J��o����"~)����{���i��E��ؾ���8S"���_O��wB�jٓ��O ����8�y��gF����/���7>�d�_�G��.�3ԙ�v�%���o�{�������ƙ3j�O��� showed I-V characteristics with reverse bias slopes to be due to wavelengths of light below semiconductor band gap, while Schottky I-V characteristics were due to wavelengths of light above the semiconductor band gap; Zhang et al. %���� Discussion: The results of the experiment were very close to … Solar energy, created by the sun, is an important source of renewable energy.In fact, most renewable energy comes from the sun either directly or indirectly. 1- Place the solar cell on the table directly under the desk lamp and switch on the desk lamp. There are two fundamental functions of solar cells: photo-generation of

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