1 / 10

SINGLE CRYSTAL SILICON PV CELLS

SINGLE CRYSTAL SILICON PV CELLS. www.solarcell.net. PARTS OF A SOLAR CELL. Electrically conductive grid on top surface to carry electrons 1-2 layers of anti-reflective coating to increase absorption The collector: a thin layer of silicon

JasminFlorian
Download Presentation

SINGLE CRYSTAL SILICON PV CELLS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. SINGLE CRYSTAL SILICON PV CELLS www.solarcell.net

  2. PARTS OF A SOLAR CELL • Electrically conductive grid on top surface to carry electrons • 1-2 layers of anti-reflective coating to increase absorption • The collector: a thin layer of silicon • An electrode in contact with base layer to complete the circuit.

  3. SILICON • Silicon is the most popular PV material • Most cells are made from left over computer chip manufacturing • Silicon must be refined to almost 100% purity • The uniform molecular structure of silicon makes it efficient for electron transport • Silicon wafers are cut from ingots

  4. CZOCHRALSKI PROCESS • This is the process of creating an ingot. • A small single silicon rod (seed) is placed in an inert gas at high temps. • When the seed is rotated up and out silicon adheres to it to form an ingot.

  5. CELLS -> MODULES • Wafers 5 inches square and .012 inches thick are sliced from the ingot. • They are then processed into cells and soldered together to achieve the desired voltage. • Cells arrayed in series are called modules.

  6. TWO TYPES OF CELLS • There are two types of single crystal silicon cells: n-type or p-type

  7. TECHNOLOGY • PV cells exhibit voltage or current when exposed to light. • The light liberates electrons which move through the cell creating current. • The larger area there is the more current. • Single crystal silicon cells are the most efficient at 15-24% sunlight-to-electricity conversion rate. • They are also the most expensive to produce at $6.50/ watt.

  8. MANUFACTURERS • Sharp Electronics Corporation • Sanyo • bp Solar • Shell • Sunwise • Uni-Solar • AstroPower

  9. Shell: 80 watt panel 47.2”x20.8”x1.3” $328.00 AstroPower: 75 watts 47.2”x20.7”x1.4” $325.00 PRICE COMPARISONS • Sunwise: • 85 watt panel • 56.89”x22.83” • $351.00

  10. BIBLIOGRAPHY “Photovoltaic Materials-Silicon”. www.azom.com/details.asp?ArticleID=1169 SOLARTROPE Supply Corporation. 2002. www.solartrope.com. Resource Center Technologies. G/rated. www.green-rated.org/resctr_tech.asp?id=1 www.physics.pomona.edu/COURSES/phys17/papers/PV.pdf www.mrsolar.com www.oksolar.com

More Related