Project Topics

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Engineering Projects

Abstract

The Objective : (1) How do the different berries influence the solar cell#s output energy?
(2) How does the different used of pencil effect the used of solar cell#s output energy?
(3) How do different electrolytes influence the solar cell#s output energy?


(4) How does different amount of Titanium Dioxide affect the solar cell#s output energy?

Methods/Materials

(1)Add 10 ml vinegar to 6g Titanium Dioxide.

(2)Add one drop of clear dishwashing detergent.

(3)Wait for 15 minutes.

(4)Test the glass slides with the multi-meter, determine which side is conductive.

(5)Mask 3mm on the three sides of the glass.

(6)Drop 3-5 drops of the TiO2 solution on the slide.

(7)Wait for the slide to dry and remove tape.

(8)Place the slide to dry for a 10-60 minutes.

(9)Blend some berries in the blender and add a tablespoon of water for every 10 berries.

(10)Put the slide (face down) into the juice (berries + water) wait for 5-10 minutes.

(11)Use soft pencil to coat the entire surface of conductive side on the other slide.

(12)Burn the conductive glass slide(with the soft pencil drawn on) with a candl.

(13)Put two sides together.

(14)Drop 1-2 drops of Iodide tincture to the crease between the two slides.

Results

(1)How do different berries influence the solar cells output energy? Strawberries doesn#t work;Blackberries work better than blueberries.

(2)How does different used of pencil (2B,3B8B) effect the used of solar cells output energy? 2B>3B>4B>5B>6B>7B>8B

(3)How do different electrolytes influence the solar cells output energy? l2 > HCl > Na(OH)2 (4)How does different amount of Titanium Dioxide affect the solar cells output energy? 12g/10ml > 6g/10ml > 18g/10ml

Conclusions/Discussion

The first test conclude that blackberries captures the highest energy output from the sun; the strawberry cannot bind with the titanium dioxide.

The blackberry has a greater amount of anthocyanin and was well bind with the titanium dioxide. The second test is the test of the different types of pencils, which had showed that the 8B pencil had the highest energy output.

When the materials in the solar cell are well blended the more energy output the solar cell produce. The third test conclude that the Iodine tincture works that best; since it is easier for the solar energy to be captured by a darker color than a lighter color.

The project used of different chemical reactions in the solar cell.

Science Fair Project done By Yenyu Chen