A solar cell is a semiconductor PN junction diode as shown in figure 1. To prepare for the axles, wheels, and gear, cut out a small piece of the “car” base near the front tire. The Band Gap Of Polycrystalline Silicon Is 1.1 Ev. Solar cells produce direct current (DC) electricity and an inverter can … Normally no external bias is applied to the cell. Fabrication of a Solar Cell . <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]>>/MediaBox[ 0 0 595.32 841.92]/Contents 83 0 R /Group<>/Tabs/S>> Solar cells can absorb electromagnetic waves and convert the absorbed photon energy into electrical energy. These solar cells are fabricated using a combination of thin film deposition and etching techniques. Solar Cell Experiment Introduction: Solar Cells convert light energy to electrical energy, so are transducers. The characteristics of materials-based systems are, however, neither simple nor uncorrelated. This entire ingot forms one single crystal, yielding mono-crystalline silicon solar cells… 9 0 obj 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. Indirectly, the sun’s heat drives the wind which can power a wind turbine.Or, the sun’s light helps plants to grow, which can then be used as organic matter for Biogas. A resistance in the cell circuit should be introduced so that the current does not exceed the safe operating limit. The solar cell should be exposed to sun light before using it in the experiment. Your email address will not be published. Since the efficiency of a diode is dependent on its temperature, you will want to be careful that the photocell temperature is kept constant throughout the experiment. Half is then doped with boron which has excess positive electrons and half with phosphorous which has excess negative electrons. endobj Solar cells are usually coated with anti-reflective materials so that they absorb the maximum amount of light energy. 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. 8 0 obj Basically a solar cell is a device that directly converts sun light into the electricity. My partner and I started looking at the distance between our flashlight and our solar cell. Our findings were about what we expected: the darker the gel, the less intensity the solar cell will record. 3: A typical I-V curve and power curve of a solar cell Fig 4: Experimental arrangement for solar cell characteristics APPARATUS: 1. <>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]>>/MediaBox[ 0 0 595.32 841.92]/Contents 77 0 R /Group<>/Tabs/S>> A simple solar cell experiment The following experiment was performed using a commercial polycrystalline silicon solar cell with an active area of 8.5 cm X 8.5 cm. A solar cell is a semiconductor PN junction diode as shown in figure 1. This was because I tried to setup before dawn and things began to gather dew. The aim of this study is to develop a model for solar photovoltaic cell based on mathematical expression. 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. 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. Silicon is intensely refined to remove all the unwanted impurities. %���� The sequence is a simple set of repeating steps including oxidation, etching, diffusion, cleaning and patterning. Figure 2 - A monocrystalline silicone solar cell . Just another Blogs @ Suffolk University site. A solar cell is basically a semiconductor p-n junction device. Solar cell 2. Disclosure: This is a paid campaign with Camp Invention, all opinions are 100% my own. The large surface area indicated in light blue is exposed to incident light energy. It was important for us to do this though, because after this step we were aware that our cell was not perfectly accurate. It also makes sense that orange and red came next, both because the orange was less opaque than the red and the blue, but because of the wavelengths of the colors. endobj These solar cells are fabricated using a combination of thin film deposition and etching techniques. Solar cells, one of the safest and cheaper ways to generate electricity, have been studied to a great extent since 1954. For our … 13 0 obj 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. SOLAR CELLS: A CASE STUDY OF EFFICIENCY & THE EFFECT ON COST . We took our measurements by holding the light source directly next to the solar cell with the gel in between, so distance would not be a factor in this experiment. However, waste problems resulting from the large spread of solar cell modules, will occur in the future without any doubt. The band gap of polycrystalline silicon is 1.1 ev. In our experiment, the solar cell and motor had V = 1.1 volts and I = 0.11 amps. Solar energy can be part of a mixture of renewable energy sources used to meet the need for electricity. Most discoveries in materials science have been made empirically, typically through one-variable-at-a-time (Edisonian) experimentation. Using photovoltaic cells (also called solar cells), solar energy can be converted into electricity. In this video we will Study the Characteristics of Solar cell. Nowadays, this device is very popular, because people have become more concerned about environmental problems. The large surface area indicated in light blue is exposed to incident light energy. 1- Place the solar cell on the table directly under the desk lamp and switch on the desk lamp. endobj It would be a natural assumption that for solar cell performance visible light is necessary. Watch this video.The Physics Guide is a free and unique educational YouTube channel. 3. <>stream To explore the relationship between distance between the cell and a light source and intensity, we took light intensity measurements at five different distances: 0cm, 3cm, 5cm, 7cm, and 9cm. x��|\TW��9��0�ff(3��� Solar Cell Experiment 2091 Words | 9 Pages. 11 0 obj In the Czochralski process a silicon ingot is “grown” or drawn from a pool of molten silicon. ���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��� endobj 2- Connect the solar cell with the electric motor and a DMM to measure current. 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. VIVA VOICE QUESTIONS: 1. Solar panels are sometimes called photovoltaic cells (photo = light, voltaic = electricity) because they absorb photons of light to create an electrical voltage. It is formed by joining p- type (high concentration of hole or deficiency of electron) and n-type (high concentration of electron) semiconductor material. endobj A solar cell experiment was performed using a commercial polycrystalline silicon solar cell with an active atea (10 cm 5 cm). 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. Solar Science Experiments for Kids are a fun way to teach children about renewable energy sources. endobj <>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]>>/MediaBox[ 0 0 595.32 841.92]/Contents 80 0 R /Group<>/Tabs/S>> 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. Experiments with Solar Cell (from Solar Kit) Zdeňka Koupilová1 Solar energy is more and more used in everyday life. Our measurements were recorded by the computer in intervals of ten seconds, and so we took the average of those recordings to get out data points. Be sure that your data will Fig. Most concentrating systems that are being used for photovoltaic (PV) applications do not illuminate the PV module uniformly which results in power output reduction. This arrangement is referred to as having the meter in series. These experiments are geared for children ages 5-10, but may be adapted for all ages. Under illumi- nation from an artificial light source with an intensity of 8.4 mW the short-circuit current I, of the cell is 286mA and the open-circuit voltage V,,, is 0.466V. The power, P, delivered by the solar cell to the motor is the voltage across the motor, V, times the current through the motor, I. 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. The sequence is a simple set of repeating steps including oxidation, etching, diffusion, cleaning and patterning. 7 0 obj Aziz Alaleit . <>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]>>/MediaBox[ 0 0 595.32 841.92]/Contents 98 0 R /Group<>/Tabs/S>> Therefore people have started using solar panels much often to produce electricity. Determine values of Voc (open circuit voltage), Isc(short circuit current), Pm (maximum power), Rm(maximum power load) and the fill factor. In addition to everyday objects such as solar calculators or solar garden lamps, photovoltaic power plants are becoming more and more common. endobj That is definitely something that can be further explored. The solar cell and motor used in this experiment had V = 1.1 V and I = 0.11 A. Purpose/Hypothesis In our solar cell experiment, we were tasked with experimenting with solar panels and how they function. How do you do Solar Cell Experiment in your lab? 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. As is apparent from the graph, the farther away the light source is from the solar cell, the less intensity the cell records. <>/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>> 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. Your email address will not be published. 1. The fabrication portion of the lab 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. At its simplest, the solar cell works like a diode. Normally no external bias is applied to the cell. Be sure that your data will VV��M�. 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. Save my name, email, and website in this browser for the next time I comment. 10 0 obj Light from the lamp should fall normally on the cell. Assignment 7.2: Self-Study on Nuclear Energy, Assignment 10.2: The Keystone XL Pipeline. An overview of the sequence is shown to the right (Figure 1). �-j�5��Ivcz�E�c�SLbzϦm��l6������s�sMY���}y������8c̅��M)�7&q��v�� d��~���� �U�~x��䳊GO(ԯ^^���%�E�ST\�'��L���1�И)�+�7?����_gS���~`Jxc%�N������$3���kXT�������X/pSê�е�^g��U���s��]��w-��� �sϭ_��%3?�_������ ��fl��*�͛]�xx��g��t����^C�[��1oъ5�ߧa,J>c�/.�����7}���2�غpqC���_}c;0��)���,I�aD�V���^�h�{�ҍ�}��u���Wtx�yO@�/Y6{ɂ��v�z/ngg"����v��i�-KBWH{���E����~�葶��"�F ��X;��L7=r��ZO]��@XlY����@av��fËKq_��.�_���j}�L%V_e�)���^Q���>fJG�m��26���c��WDc0ܠd��Q����1�S�sl4���f�\~[�հ��"V��e���y�����{�v��M�I?k��N�/��f����6j�Ϸ�z����e� ��d��+�X?���p/�sm�Ϙ��{��{N�~�,ݐ�N��~Sb{� ?پ���ɦw�I���ju�9ɺu���(�=�v�R�q���=��� :�z"VR�ع���ov���������G5�����'c�?�g�Y?җx�����������C�����{�' ��z�u��Y�����P]�z�7����{���t|�/�2��Aw�Nݩ;��Lʵ�$�����߼��Vz���EϮ�j�죚] d��q� '~���o9+�����d�Q�s�u� at the junction excess electrons from n … It was no surprise that white light gave the highest intensity, and the light pink one was not far behind. endobj (Perlin, 2004) A solar cell is a solid electrical device that converts solar energy directly to electricity. I got similar results to yours but it would be nice to know what it means. … Luckily, it was still accurate enough that the experiment worked out for us. He found, when experimenting with an electrolytic cell made up of two metal electrodes, that some materials would produce small amounts of current when exposed to light. <>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]>>/MediaBox[ 0 0 595.32 841.92]/Contents 75 0 R /Group<>/Tabs/S>> 4 0 obj Most concentrating systems that are being used for photovoltaic (PV) applications do not illuminate the PV module uniformly which results in power output reduction. There are two fundamental functions of solar cells: photo-generation of Since the efficiency of a diode is dependent on its temperature, you will want to be careful that the photocell temperature is kept constant throughout the experiment. Question: A Solar Cell Experiment Was Performed Using A Commercial Polycrystalline Silicon Solar Cell With An Active Atea (10 Cm 5 Cm). 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. The Power produced by the solar cell and its efficiency. I feel like the part of the experiment with the colored gels was somewhat inconclusive. <>/ExtGState<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]>>/MediaBox[ 0 0 595.32 841.92]/Contents 90 0 R /Group<>/Tabs/S>> <>/ExtGState<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]>>/MediaBox[ 0 0 595.32 841.92]/Contents 106 0 R /Group<>/Tabs/S>> 1 0 obj <>/Metadata 127 0 R >> 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. ��Kd�b�F( Specifically, we were asked to discover the relationship between the distance between the cell and a light source and light intensity, and also the color of light and how that effects intensity. The following experiment was performed using a commercial polycrystalline silicon solar cell with an active area of 8.5 cm X 8.5 cm. Before we really began recording data, we tested the solar cell in the dark to determine its accuracy. 12 0 obj Solar cells do not produce greenhouse gases, which are very harmful for our planet. It is a semiconductor device, which generates an emf when illuminated by light. endobj In addition to reflecting the performance of the solar cell itself, the efficiency depends on the spectrum and intensity of the incident sunlight and the temperature of the solar cell. Aim 1: To investigate any relationship present between the distance between a solar cell and a lamp, and the current output of the solar cell, at a fixed voltage. proposed a method to predict I-V curves under different operating conditions, while Ibrahim investigated the response of crystalline silicon (Si) solar … 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. 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. We had red, blue, orange, and light pink, and of course white light without a gel. <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]>>/MediaBox[ 0 0 595.32 841.92]/Contents 81 0 R /Group<>/Tabs/S>> This study investigated the electrical performance of three PV modules with cells connected in different configurations to address nonuniform illumination effect. endobj The fabrication portion of the lab That for solar cell in the cell a great extent since 1954 ages 5-10, but it still! 1.1 ev are usually coated with anti-reflective materials so that they absorb the maximum amount of light.. Develop a model for solar photovoltaic cell based on mathematical expression blue light Basically. External bias is applied to the right ( figure 1 ) as having the meter in series how. 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