J-BNB - VPMThane.org

iv.
Chapattis are not cooked because high temperature for baking is required.
PLACES
1. Bioline technologies, sales office-3A, Alankar towers, old Mumbai – Pune road, Dattawadi,
Kalwa (w) Thane, Maharashtra.
2. Jost‘s engineering company ltd. C-7 wagle industrial estate, road no 12, Thane, 400604,
Maharashtra.
3. Stell art engineering works, plot no R 510 MID.c, T.T.T.C Industrial area Rabale, Mumbai,
Thane, Maharashtra.
3 . SOLAR PHOTO VOLTAICS
The direct conversion of solar energy into electrical energy by means of photo voltaic effect that is the
conversion of light in to electricity.
CONSTRUCTION
i. It works on principle of photovoltaic conversion.
ii. A solar cell consists of silicon or gallium-arsenide pn-junction diode packed din a can with glass
window top.
iii. The upper layer is of p-type semiconductor.
iv. It is very thin so that the incident light photons may easily reach the pn-junction.
v. On the top face of p-layer, the metal finger electrodes are prepared. Sunlight reaches the pnjunction
through p-layer.
vi. An anti- reflecting coating of SiO2 is applied on the top surface in gap between metallic fingers.
vii. The active junction area is kept large to get more power.
93 JBNB (Vol. I ) Issue I January’2013