SOLAR PAINT THAT SOLAR PAINT THAT GENERATES ELECTRICITYGENERATES ELECTRICITY

BYBY

D.NAGA PRADEEPD.NAGA PRADEEP

08311A042208311A0422

Y SOLAR Y SOLAR PAINT ??PAINT ??

Problems with SiliconProblems with Silicon

Silicon solar cells are fragileSilicon solar cells are fragile

Cells are expensive to produce, and Cells are expensive to produce, and must be manufactured in clean must be manufactured in clean roomsrooms

Only absorbs certain frequencies of Only absorbs certain frequencies of lightlight

MATERIALS USEDMATERIALS USED

TITANIUM DIOXIDETITANIUM DIOXIDE

CALCIUM SULPHIDE OR CALCIUM CALCIUM SULPHIDE OR CALCIUM SELENIDESELENIDE

WATER & ALCHOHOL MIXTUREWATER & ALCHOHOL MIXTURE

SOLAR PAINTSOLAR PAINT

HOW ELECTRICITY IS HOW ELECTRICITY IS GENERATED?GENERATED?

QUANTUM DOTSQUANTUM DOTS

PHOTO ELECTRIC EFFECTPHOTO ELECTRIC EFFECT

PRINCIPLE OF OPERATIONPRINCIPLE OF OPERATION

Maximizing EfficiencyMaximizing EfficiencyNanotechnology can surpass the Nanotechnology can surpass the

practical limit of 35% efficiency for practical limit of 35% efficiency for silicon cellssilicon cells

Energy absorbed depends on the type Energy absorbed depends on the type of atom or the size of the nanoparticleof atom or the size of the nanoparticle

• Varying nanorod or quantum dot sizes can capture a wider variety of photons for a greater efficiency

ADVANTAGESADVANTAGES

With flexible organic substrates, With flexible organic substrates, solar cells could be attached or solar cells could be attached or painted almost anywhere, even in painted almost anywhere, even in clothingclothing

Cheap, long-lasting cells make solar Cheap, long-lasting cells make solar cells more viable for personal usecells more viable for personal use

Solar cells covering the Sahara Solar cells covering the Sahara Desert could supply the world’s Desert could supply the world’s energy needsenergy needs

Nanorod solar cells can be produced Nanorod solar cells can be produced in normal factories instead of clean in normal factories instead of clean roomsrooms

These cells will be cost-effective once These cells will be cost-effective once an efficiency of 10% is reachedan efficiency of 10% is reached

REFERENCESREFERENCES

http://www.medindia.net/news/Now-Shttp://www.medindia.net/news/Now-Solar-Paint-Using-Nanoparticles-To-Geolar-Paint-Using-Nanoparticles-To-Generate-Electricity-95250-1.htmnerate-Electricity-95250-1.htm

http://www.sciencedaily.com/releasehttp://www.sciencedaily.com/releases/2011/12/111221211324.htms/2011/12/111221211324.htm

THANKUETHANKUE