220
N. Jariwala and J. Soni
Fig. 9.3 Actual photovoltaic
module
Table 9.1 Description of components of PV module
Sr. no. Components/materials Description
1
Frame
It is made up of Aluminium
2
Glass
Low iron solar textured glass of 3.2 mm or 4.0 mm are used. It
comprises of 70% of weight of solar panel
3
Solar cells
Front (−ve): Padded silver bus bar (0.8 ± 0.05 mm) with fine
textured surface anti-reflective silicon nitride (blue/light blue)
Rear (+ve): Maximum aluminium surface Back surface layer,
1.8 ± 0.2 mm long (silver/aluminium) discontinuous solder
pads in 5 busbars
4
EVA
Ethyl Vinyl Acetate (EVA) Encapsulant is matt from inside and
embossed from outside
5
Backsheet
It is 365 µm thick and is a fluoro-based UV and weather stable.
It has extremely low moisture permission
6
Sealant and adhesive It is a one-part, non-corrosive neutral-curing silicon adhesive. It
combines mechanical strength with high elongation
7
Solder wire
It is manufactured from virgin metals (Sn63/Pb3) and flux
cored. The post solder residues are non-corrosive
8
Junction Box
A junction box has bypass diodes allowing power flowing in
one direction and preventing it from feeding back into the
panels. Internal wires connect to diodes, offering an convenient
way to link panels
N. Jariwala and J. Soni
Fig. 9.3 Actual photovoltaic
module
Table 9.1 Description of components of PV module
Sr. no. Components/materials Description
1
Frame
It is made up of Aluminium
2
Glass
Low iron solar textured glass of 3.2 mm or 4.0 mm are used. It
comprises of 70% of weight of solar panel
3
Solar cells
Front (−ve): Padded silver bus bar (0.8 ± 0.05 mm) with fine
textured surface anti-reflective silicon nitride (blue/light blue)
Rear (+ve): Maximum aluminium surface Back surface layer,
1.8 ± 0.2 mm long (silver/aluminium) discontinuous solder
pads in 5 busbars
4
EVA
Ethyl Vinyl Acetate (EVA) Encapsulant is matt from inside and
embossed from outside
5
Backsheet
It is 365 µm thick and is a fluoro-based UV and weather stable.
It has extremely low moisture permission
6
Sealant and adhesive It is a one-part, non-corrosive neutral-curing silicon adhesive. It
combines mechanical strength with high elongation
7
Solder wire
It is manufactured from virgin metals (Sn63/Pb3) and flux
cored. The post solder residues are non-corrosive
8
Junction Box
A junction box has bypass diodes allowing power flowing in
one direction and preventing it from feeding back into the
panels. Internal wires connect to diodes, offering an convenient
way to link panels