Course Details

Subject {L-T-P / C} : EE6245 : Silicon Solar Cell Technology {3-0-0 / 3}
Subject Nature : Theory
Coordinator : Prof. Paresh G Kale

Syllabus

Introduction to energy scenario and solar PV:
• World and Indian energy scenario
• Issues concerning the use of the conventional energy sources
• Renewable energy and its role in energy supply
• Place of Photovoltaics in renewable energy
• Developments of Solar PV in India
• Policies related to solar power in India

Part I : Physics of Solar Cell
Production of Silicon
• Metallurgical grade Si
• Production of Si wafer (CZ and FZ method)
• Wafer dicing techniques
• Multi-crystallline Si
• Ribbon Si
• Si feedstock for solar cells

Review of Physics of semiconductors
• Crystal lattice, Atoms and electrons
• Formation of energy bands
• Charge carrier in semiconductors
• Control of carrier concentrations: Doping
• Drift of carriers: Conductivity and mobility
• Diffusion of carriers: Diffusion coefficient
• Carrier generation and recombination

P-N Junction and solar cells
• Formation of the P-N junction
• Equilibrium condition
• Contact potential, electric field at junction
• Forward biasing of the junction: excess charges
• Reverse biasing of the junction
• Diode current: qualitative analysis
• Diode current: quantitative analysis
• Photovoltaic effect
• Light generated current
• I-V curve of an illuminated junction
• Solar cell parameters



Wafer based Solar cell technologies
• Mono-crystalline and multi-crystalline Si-Shape of wafers
• Generic industrial process,
• Solar cell processes


PART-II : Solar photovoltaic systems and applications
Solar radiation
• Sun-earth geometry
• Solar constant
• Solar spectrum on Earth’s surface
• Beam, diffused and global radiation
• Instruments to measure solar radiation
• Estimation of solar radiation (Global, diffused and beam)

Solar PV modules
• Solar Panels, arrays
• Module output variation with temperature and radiation
• Issues related with solar panels
• Parallel and series combination of the panels

Balance of System (BoS)
• Batteries
• Charge controller
• DC/AC converter
• Maximum power point tracking (MPPT)
• Grid connections

Photovoltaic Systems Design and Applications
• PV systems (Stand alone, hybrid, grid connected)
• Design process and optimization
• Applications
o Direct systems, without energy storage
o Stand alone system, solar home lighting
o Water pumping system
o Hybrid system
• Cost analysis of PV system (Life cycle and annualised costing)

Course Objectives

  1. Understanding Working of Solar cell physics
  2. Design Solar PV systems and economics

Course Outcomes

The student will be able to understand the basics of physics of solar PV, how the solar cell fabrication is done. Student will be able to design simple PV systems (Isolated) and evaluate the economics of the system

Essential Reading

  1. Solanki Chetan, Solar Photovoltaics: Fundamentals, Technologies And Applications, PHI
  2. S M Sze, Physics Of Semiconductor Devices, Wiley India

Supplementary Reading

  1. Martin Green, Solar cells: Operating principles, technology and system applications, PHI
  2. B G Streetman, Solid State electronic devices, PHI