Types off panels

-
The are 3 basic types of construction of PV panels though all of those shown here use silicon. For information on other photovoltaic materials used for the construction of solar cells, please see our area on Thin Film Panel Technology
We also have a separate section on Concentrating Photovoltaics (CPV)
Monocrystallin Photovoltaic Cell
Monocrystalline cells are cut from a single crystal of silicon- they are effectively a slice from a crystal.
In appearance, it will have a smooth texture and you will be able to see the thickness of the slice.
These are the most efficient and the most expensive to produce. They are also rigid and must be mounted in a rigid frame to protect them.



Polycrystalline Photovoltaic Cell
Polycrystalline (or Multicrystalline) cells are effectively a slice cut from a block of silicon, consisting of a large number of crystals.
They have a speckled reflective appearance and again you can you see the thickness of the slice.
These cells are slightly less efficient and slightly less expensive than monocrystalline cells and again need to be mounted in a rigid frame.

Amorphous Photovoltaic Cell
Amorphous cells are munufactured by placing a thin film of amorphous (non crystalline) silicon onto a wide choice of surfaces. These are the least effient and least expensive to produce of the three types. Due to the amorphous nature of the thin layer, it is flexible, and if manufactured on a flexible surface, the whole solar panel can be flexible.
One characteristic of amorphous solar cels is that their power output reduces over time, particularly during the first few months, after which time they are basically stable. The quoted output of an amorphous panel should be that produced after this stabalisation.

Comments

Post a Comment

Popular posts from this blog

Solar Cell Production Process

-
Image
1. Standard Solar Cell Production Process                                            2. PERC Solar Cell Production Process Wafer Clean： Using acid or alkali liquid to do saw damage removal. Texturing： Using acid or alkali liquid to texture. Diffusion： High temperature vacuum tube process with (POCl3 ) gas to define positive/ negative electric junctions. Wet Edge Isolation： Using Acid liquid to remove SiO2 layer from wafer surface and doing isolation on wafer edge. Chemical Vapor Deposition： Chemical vapor deposition by tube to build anti-reflection layer (SiNx) on wafer surface. Laser Opening： The formation of a high-quality local back-surface-field (LBSF) using by laser opening.  Screen Printing： Screen printing the electrode pattern on both side with metal component paste. Co-Firing： Using high temperature heater to make cross-link between electrode and junction for electric current output. Efficiency Test ： Classify cells by surface visual inspection with
Read more

Solar Basic knowledge

-
Image
Solar panels have become the basic units for generating electricity. The popularity of solar energy in generating power is attributed to its improving efficiencies and reducing costs. Solar energy has gradually reached grid parity with almost all states in India and has become a convenient options for power generation in places located far from the grid. According to our analysis, people install solar panels for three basic reasons:          To reduce Electricity Bill          To store excess power  and          Inspired by Neighbourhoods Today, there are a lot of options available to common people to choose solar panels. Thanks to the internet, a potential buyer has ample brands to choose from. He can also study the features and compare different brands available in the market through information found on the internet. However, the pattern which a potential buyer chooses also differs from person to person. Based on their methodology, we have divided the buyers into di
Read more

Layers of Solar Module

-
Image
a. Glass The front glass is the heaviest part of the photovoltaic module and it has the function of protecting and ensuring robustness to the entire photovoltaic module, maintaining a high transparency. b. EVA One of the most important materials is the encapsulant, which acts as a binder between the various layers of the PV panel. The most common material used as an encapsulant is EVA - Ethylene vinyl acetate. It is a translucent polymer sold in a roll. It must be cut in sheets and deposited before and after the photovoltaic cells. When subjected to a thermal process of vacuum cooking, this particular polymer becomes similar to a transparent gel and incorporates the photovoltaic cells. c. Backsheet The term backsheet literally means the sheet on the back. It is made from a plastic material that has the function to electrically isolate, protect and shield the PV cells from weather and moisture. This particular sheet is usually white in color and is sold in rolls or sheets. There
Read more