Jan 31, 2012 the opencircuit voltage, voc, is the maximum voltage available from a solar cell, and this occurs at zero current. Introduction of quantum mechanics in solar photovoltaics ii. The course content is designed to provide comprehensive knowledge on solar radiation, analysis of solar radiation data, fundamentals of the solar thermal and photovoltaic system along with storage of energy required for effective design of efficient solar energy conversion devices. Parasuraman, department of metallurgical and materials engineering, iit madras. Solar energy engineering and technology course nptel. Dye sensitized solar cell dssc lecture for eng 230. Cross section of solar cell made of highquality material minority carrier diffusion length l diff. So, this course is basically it it is divided in it is a 40 it is a 40 lecture. Electronic materials, devices, and fabrication by prof s. Performance and stability of perovskite solar cells. Solar cells absorb some of the photons from sunlight and convert it to a useable amount of direct current electricity. Nptel provides elearning through online web and video courses various streams. Cell panel array balance of system bos mounting structures storage devices power conditioners load dc pv panel 4 ac dc ac charge regulator inverter battery dc load ac load modularity. Measurements of sunlight, orthogonal to the solar beam rarely exceed 75% of the solar constant.
Carriers must be able to move from their point of generation to where they can be collected. Mar 06, 2019 the main goal of nptel phase ii 200914 was to build on the engineering and core science courses launched previously in nptel phase i. Basics and performance analysis of solar air heaters. Since the voltage is too small for most applications, to produce a useful voltage, the cells. Since the voltage is too small for most applications, to produce a useful voltage, the cells are connected in series into. However, there are ambivalent views about solar, or photovoltaic, cells ability to supply a significant amount of energy relative to global needs. Solar pv technologies principle solar absorbed light is transferred to the electrons of the pv cell atoms exiting them and producing the electrical current with the help of a builtin electric field which provides the needed voltage. Courses solar photovoltaics fundamentals, technology and applications. If we flip over the cell we see the entire back surface is coated with metal, which allows easy extraction. When charged by the sun, this basic unit generates a dc photovoltage of 0. Cell structure and function of the organelles, chromosome structure and organization, transport across cell membranes, receptors and growth factors, signal transduction, cell culture, introduction to hematology. Stand alone systems, concept of microgrid and its components, hybrid systems hybrid with diesel, with fuel cell, solar wind, wind hydro systems, mode controller, load sharing, system sizing.
Nptel ncer assignment 6 answers updated oldquestionpapers. Satyamurty from iit kharagpur made available by nptel elearning initiative. Free online course on solar energy and semiconductor devices. A diode can be either schottky diode or a pn junction diode the maximum efficiency a silicon solar cell can have, theoretically, is less than 10% less than 20% close to 50% slightly above 30% no, the answer is incorrect. The opencircuit voltage is shown on the iv curve below. Solar information module 62 published february 1982 this book presents a nonmathematical explanation of the theory and design of pv solar cells and systems. Hoffner file size 27 mb solar energy vliet photovoltaic solar cell file size 40 mb solar energy. Lecture note 1 nptel 4637cc61c9a339eb011ba0e51167e37c. Introduction to dye sensitized solar cells, fabrication of dye sensitized solar cells, design of novel dyes, design. The opencircuit voltage corresponds to the amount of forward bias on the solar cell due to the bias of the solar cell junction with the lightgenerated current. The opencircuit voltage, v oc occurs at zero current. Search by nptel course id, course name, lecture title. Electronic materials, devices, and fabrication prof. Amorphous silicon, quantum dot solar cells, week 4.
This introduction to solar cells covers the basics of pn junctions, optical absorption, and iv characteristics. Hegedus, wiley the physics of solar cells, jenny nelson, imperial college press thin films solar cells, k. The builtin electrical field is created by two layers of semiconductor material. Working of led, photo detectors, pin, avalanche photodiode, solar module6 memories. A detailed performance model for photovoltaic systems. Free online course on solar energy and semiconductor. In this course we will discuss about various photovoltaics technologies, different generation of solar cells, device fabrication and characterization techniques and applications in industries. The spaces between the grid lines allow light to enter the cell. Sundar manoharan,department of chemistry and biochemistry,iit kanpur.
Lecture notes fundamentals of photovoltaics mechanical. Influence of various parameters on the performance of lfpc. Numerical solar cell modeling, crystalline silicon and iiiv solar cells, thin film solar cells. Solar energy is to be a major primary energy source. Alan doolittle basic collecting junctions intro and comparisons role of the collecting junction. Present status, solar cells, cell technologies, characteristics of pv systems, equivalent circuit, array design, building integrated pv system, its components, sizing and economics. Satyamurty, department of mechanical engineering, iit kharagpur. Types of collectors, collection systems, efficiency calculations, applications.
Solar energy technology online course video lectures by. Lecture 15 solar thermal energy conversion youtube. The costs of solar power have been declining steadily and. The open the solar cell due to the bias of the solar cell junction with the. The environmental and social impacts of pv are compared to the competing energy sources. Dennis baldocchi professor of biometeorology ecosystem science division department of environmental science, policy and management 345 hilgard hall university of california, berkeley berkeley, ca 94720 september 12, 2014 this set of lectures will discuss a. The solar cell is the basic building block of solar photovoltaics. He has organized three shortterm courses and a national. Alan doolittle 2 2 ln ln ln i a d bi a i d p n bi n n n q kt v n n n q kt n x n x q kt v for n a n d 1015cm. Optical devices like leds, lasers, solar cells, will also be explained. Parasuraman,department of metallurgy and material science,iit madras.
Common limitations of efficiency, shortcircuit current, fill factor, opencircuit voltage. Beers law is often used to evaluate the attenuation of monochromatic sunlight by the atmosphere rr mgg, exp 0 rg0 is the radiation flux density of an aerosol free atmosphere, is the turbidity coefficient or optical depth and m is mass of the air, computed as the secant of the solar. Potentialstep amplified thermalelectrical energy converter. The course will introduce you to solar energy, solar cells, solar radiation, the fundamental aspects of solar radiation, and identifying atmospheric effects on solar radiation. Engineering manual neh 210 on hydraulics and irrigation engineering for additional. And we can see that a metal ribbon is connected to the top metal contacts, which form a grid.
It is the role of the collecting junction to separate the electron and hole pairs and. Lecture series on energy resources and technology by prof. The size or area of the cell determines the amount of amperage. Detailed currentvoltage output functions are developed for a cell, a module and a string of modules connected in series and in parallel. Lecture 6 solar radiation part 2 principles notes 2014. Introduction of quantum mechanics in solar photovoltaics i. A 12 volt bilge pump works very well in a bucket wired to a solar module. The solar pv systems, from cells to grids, are also addressed, with a particular emphasis on the challenges of gridintegration of pv and the development of storage technologies.
Solar cells are a promising and potentially important technology and are the future of sustainable energy for the human civilization. This article describes the latest information achievement in the field of solar cells solar cell efficiency tables version 48 containing the latest efficiency of different types. For an ideal solar cell at most moderate resistive loss mechanisms, the shortcircuit current and the light circuit current is the largest current which may be drawn from the solar cell. In this free online course, you will learn about learn about the principles, technologies and materials used in solar photovoltaics. Sunlight is composed of photons like energy accumulations, or particles of solar energy. Lecture 5, solar radiation, part 1, principles instructor. Most electrons diffuse through the solar cell uninhibited, contributing to high photontoelectron quantum efficiencies. Rohsenow heat and mass transfer laboratory, mit images removed due to restrictions. A diode can be either schottky diode or a pn junction diode the maximum efficiency a silicon solar cell can have, theoretically, is less than 10%. Solar energy technology online course video lectures by iit.
Environmental and market driving forces for solar cells solar cells are much more environmental friendly than the major energy sources we use currently. Actual commerciallyavailable silicon solar cells are typically 1417% efficient. Department of physics indian institute of technology. Lecture 3 diode characteristics nptel analog electronics. Understanding the collection of electrical separation of. Larger modules will have 60 or 72 cells in a frame. These are record cell efficiencies under ideal conditions 25c, wm. From basic principles to advanced concepts by peter wurfel photovolatics materials by r. Banerjee,department of electrical engineering, iit kharagpur. But for the efficiency of silicon solar cells is in the range of 18% 3.
196 121 1263 1341 1595 458 516 904 889 1486 447 371 746 1080 1404 313 1613 541 546 1588 878 564 107 619